62 Corvette Pure Stock Build
 

20+ years ago, my Father and I restored this 62 Corvette. The car was a barn(s) find. Body in one county (pig barn) and chassis in the other. We drug the car home and got started. While the project took about 3 years, we spent some time to build him the 62 he always wanted. Let me say this, there is not one number that is original to the car.

Considering the fact Dad elected to paint the car black, he only drove the car 1900 miles in 20 years. One day this spring, Dad and I are raising hell with a case of beer and he asks me if I want to buy the 62. I was not in the market for another car this year but...........................I really miss the last 62 that I had. https://www.yenko.net/ubbthreads/ubbt...0hp#Post463791
Good thing Tracey (da Wife)is in to this too

The last thing I wanted was the car to get away. As one can imagine, there is quite bit of sentimental value to the car, to say nothing for the fact I just dig 62's. I've had a hankering to do some vintage racing in the last year. Vintage sports car racing is just not in my budget (I have a few friends that race Road America) and Pure Stock looked like a rather appealing alternative. Kind of strange when the perfect storm comes together.

So, I started to look around the internet about PSMCDR and I guess I got hooked. Sooooooooooooo, we are moving forward. As it stands right now, the 62 has a 63 block in it (we will call is a CE [img]<<GRAEMLIN_URL>>/hmmm.gif[/img]) and the proper 461X heads. As of now, there is an LT1 cam in it which will need to be changed. Currently, the car has a wide ratio Muncie in it with 3.55 gears.

The other itch I always need to scratch, is fuel injection. I cannot explain why, but I am just infatuated with fuel injection. Keeping in mind this is a put together car, no harm......no foul. I have spent the summer collecting some parts for the project and gathering my information. I am finally at the point where I decided to show this deal off and share the direction I am looking to go with it. I sourced a real nice F.I. unit at Bloomington Gold this year, as well a finding a proper set of the stock &quot;wide wheels&quot; to go with the NOS dog dish hub caps.

The plan calls for.............
New engine build to comply with the rules package. There is a fellow that I have become to know that really has some good ideas for the engine package as well as the overall build. Here is a link to some of the dialog from the NCRS website discussion http://www.ncrs.org/forums/showthrea...-engine-guru-s

Not sure if the WR Muncie will stay in place. I have plugged the engine package into a computer dyno simulator and it seems like I would be better served with a CR trans. Again, after plugging some math it seems like a 4.56 gear would work the best as peak power will be around 5000-7000 rpm. With the 6.70-15 tires, that should take me through the traps around 7000 rpm.

Here is some pics as I stand right now.
http://i1043.photobucket.com/albums/...ps267824cb.jpg

http://i1043.photobucket.com/albums/...psfb6715d3.jpg

http://i1043.photobucket.com/albums/...ps1db038c1.jpg

http://i1043.photobucket.com/albums/...ps357c2530.jpg

http://i1043.photobucket.com/albums/...psb99dc53b.jpg

http://i1043.photobucket.com/albums/...ps16cf225b.jpg

http://i1043.photobucket.com/albums/...psdcc4cb63.jpg

Re: 62 Corvette Pure Stock Build
 

Really nice!

Re: 62 Corvette Pure Stock Build
 

Very nice! Will this be a 360 HP build?

Re: 62 Corvette Pure Stock Build
 

Yes Sir!

Re: 62 Corvette Pure Stock Build
 

This is an exciting project! Looking forward to your updates.

Re: 62 Corvette Pure Stock Build
 

Very nice Black Vette! Love the color combo.


Dave
67 Nova Boy

Re: 62 Corvette Pure Stock Build
 

Can't wait to see this one Tim! Dad and I might have to make a trip up there.....!

Good luck!

Jake

Re: 62 Corvette Pure Stock Build
 

Can't wait for PSMCDR 2014, this 62 will be lots of fun.

Ryan

Re: 62 Corvette Pure Stock Build
 

Old age does not allow me to sleep like I used to. Up at 3:30 this morning...........read the news.........look at the paper...............read all the websites...............blah blah blah. So, I decided to tear into the F.I. unit and have a look around. This was a restored unit when I purchased it but.............not going to trust it. I thought I would snap some pics.

http://i1043.photobucket.com/albums/...ps37583c61.jpg

http://i1043.photobucket.com/albums/...psf6689fe6.jpg

Bottom side with solenoid that only opens when there is power to the ignition. The prevents siphoning fuel into a cylinder while shut off, thus hydraulic locking the cylinder. Connecting rods are not to fond of that. Ask me how.
http://i1043.photobucket.com/albums/...psdec8f59c.jpg

New NOS cranking signal valve. That allows the F.I. to identify engine crank and thus going full rich for starting. These develop vacuum leaks and then thus, run pig fat all the time.

http://i1043.photobucket.com/albums/...psf74ac0de.jpg

Oooops. This ain't right! That rod is supposed to be in the hole [img]<<GRAEMLIN_URL>>/thumbsdown.gif[/img]

http://i1043.photobucket.com/albums/...ps2bc0cd03.jpg
http://i1043.photobucket.com/albums/...psf0674e4f.jpg

Fuel bowl and the business end of things. See the high pressure pump in the bottom?

http://i1043.photobucket.com/albums/...ps052bc68e.jpg
http://i1043.photobucket.com/albums/...ps23bb28c4.jpg

All looks good in the high pressure pump. Was missing the gasket where it enters the fuel bowl.

http://i1043.photobucket.com/albums/...ps7458f8a1.jpg

And the high pressure pump end plate looks real good too!

http://i1043.photobucket.com/albums/...ps87dca486.jpg

That all is driven by a small speedo cable driven by the distributor.

http://i1043.photobucket.com/albums/...psdcff349f.jpg

Injector lines and injector blocks

http://i1043.photobucket.com/albums/...ps164a12f7.jpg

All 8 injectors size is determined my a small letter stamped into the injector.

http://i1043.photobucket.com/albums/...ps96d56a7f.jpg

That's an &quot;R&quot;

http://i1043.photobucket.com/albums/...ps321642ff.jpg

And that is all of what is inside of the injector. All looks pretty good inside. It was a good buy all things considered.

http://i1043.photobucket.com/albums/...pse83026a1.jpg

Re: 62 Corvette Pure Stock Build
 

Thanks for the pics! I've always been curious about the inner workings of those units.
Beautiful car, good luck. (PM sent)

TOM

Re: 62 Corvette Pure Stock Build
 

Just put an LS engine in it so you can have some real fun.........LOL........Great Car!!!!

Ken

Re: 62 Corvette Pure Stock Build
 

How soon do you plan to tear into it?

Re: 62 Corvette Pure Stock Build
 

I'm starting already. The plan I have for now is to do some testing with the current combination just to see how weight transfers and how rediculous the traction can be. Also, I want to get some baselines on 60ft times and MPH.

After that, the injection is going to go on to check it's driveability and get some basic air / fuel ratios.

The actual engine build should occur next year. I want to spend some time researching exactly what I want to do. My intial thought is a 12:1 with a 4.56 gear. Have to wait and see besides save some $$$$$$!!

Tim

Re: 62 Corvette Pure Stock Build
 

great pictures! If you want, you can run 7.10 tires on it to maybe make better times, because if you are going for the wide wheel look, the 5.5&quot; wheels were designed to allow a bigger tire than the 6.70. I would think the tread is just a wee bit wider which should help on traction.

neat car!

Re: 62 Corvette Pure Stock Build
 

From http://www.purestockdrags.com/p/rules.html here are the tire and wheel rules.

<div class="ubbcode-block"><div class="ubbcode-header">Quote:</div><div class="ubbcode-body">Tires and Wheels:

Reproduction tires or radial tires only. No soft compound tires of any kind allowed. Retread tires are not allowed. Use of traction compounds or rubber-softening chemicals on tires is strictly prohibited. Suspicious tires will be durometered. You are allowed to run tires one size over stock, with G70s being the largest size allowed for cars with 70-series tires, and G60s the largest allowed for cars that came with 60-series tires. All four tires must be the same size. No 60-series tires will be allowed unless they were originally available for the car's year and model. 60-series tires must be run on 15-inch rims as they were originally. <span style="font-weight: bold">Cars built before the introduction of 70-series Polyglas or Wide Ovals are allowed to upgrade to 70-series of appropriate size. Factory wheels only. Wheels must be correct in size, offset, and style for the car's make, model, and year.</span> All four wheels must be the same size and offset.
EXCESSIVELY WORN OR BALD TIRES ARE STRICTLY PROHIBITED! TIRES CANNOT BE WORN DOWN TO THE TREAD WEAR BAR INDICATORS.</div></div>

Fact is, the reproduction Polyglas and Wide Oval bias ply tires are worlds better than anything that was available back when they were original equipment. They almost border on the same quality as having slicks did back in the day. Call Rusty Small if you want to talk tires. Cell phone is 816-654-3400. He is your best bet when it comes to reproduction Goodyears, and he even delivers to the Pure Stock Drags.

Re: 62 Corvette Pure Stock Build
 

Rusty's name here on the Yenko SYC board is Smallhurst.

https://www.yenko.net/ubbthreads/ubbt...842/SmallHurst

Give him a shout. He loves to talk tires.

Re: 62 Corvette Pure Stock Build
 

on my '57 i picked up a set of 15x6 impala/caprice wheels from '78 vintage. ran the '57 dog dish caps.
i used F70-15 redlines with the black side out.
you'll never get it hooked with the skinny tires. we tried it.

http://i24.photobucket.com/albums/c2...cStanton07.jpg

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Re: 62 Corvette Pure Stock Build
 

That 57 is pretty tough looking! I have a set of 15x7's that was on the car when my Dad had it. It's pretty good idea given the fact the rules allow it. IMO, the bias ply's look the best on these cars.

http://i1043.photobucket.com/albums/...psa99e9e51.jpg

BTW, I got your PM Rusty!. I'll be in touch. You really hooked me up with the Goodyears on my old LT1.

http://i1043.photobucket.com/albums/...1/100_1622.jpg

Re: 62 Corvette Pure Stock Build
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: L78racer</div><div class="ubbcode-body">on my '57 i picked up a set of 15x6 impala/caprice wheels from '78 vintage. ran the '57 dog dish caps.
i used F70-15 redlines with the black side out.
you'll never get it hooked with the skinny tires. we tried it.

http://i24.photobucket.com/albums/c2...cStanton07.jpg

<object width="425" height="350"> <param name="movie" value="https://www.youtube.com/v/iMrErN9spig"></param> <param name="wmode" value="transparent"></param> <embed src="https://www.youtube.com/v/iMrErN9spig" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"> </embed></object> </div></div>

Is that &quot;just a 270hp&quot; car? That thing flies!

Re: 62 Corvette Pure Stock Build
 

yep, 270 hp. 4 spd. 4.10 axle.
i sold it 3 years ago. (owned it for 38 years)
running a '68 L78/L89 camaro now.

Re: 62 Corvette Pure Stock Build
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: L78racer</div><div class="ubbcode-body">yep, 270 hp. 4 spd. 4.10 axle.
i sold it 3 years ago. (owned it for 38 years)
running a '68 L78/L89 camaro now.
</div></div>

The beautiful Butternut yellow one with no spoiler?

Ryan

Re: 62 Corvette Pure Stock Build
 

yup that's the one.

Re: 62 Corvette Pure Stock Build
 

Great Camaro.

Goes like stink.

We're you running iron heads in 2011? Testing my car memory.

Ryan

Re: 62 Corvette Pure Stock Build
 

thanks.
yes. i put them on for the 2012 season.

Re: 62 Corvette Pure Stock Build
 

Nice.

I try to meet new psmcdr people every year, but get so wrapped up in watching racing and checking out cars I don't socialize enough.

Will look you up next race, any changes planned?

Ryan

Re: 62 Corvette Pure Stock Build
 

ok sounds good. we're always trying new things.

Re: 62 Corvette Pure Stock Build
 

I spent a little time on the 62 this weekend. I received the gasket set for the injection unit and started to reassemble.

http://i1043.photobucket.com/albums/...ps032a0bba.jpg

http://i1043.photobucket.com/albums/...ps74bc256a.jpg

Then quite frankly, I was not happy with the quality of the plating on a bunch of the small items. Sooooooo off they go to the plater that has been highly recommended. http://www.detailplating.com/index.htm

http://i1043.photobucket.com/albums/...ps7cf21be2.jpg

Did you know these cars have a factory traction bar????


http://i1043.photobucket.com/albums/...ps0b8057f9.jpg

http://i1043.photobucket.com/albums/...psa83800a6.jpg

Re: 62 Corvette Pure Stock Build
 

I have a friend who was playing around with the engine analyzer. These are the power curves that he came up with utilizing SAE net (water pump, fan, and fan clutch) horsepower numbers......

1. Published flow rates for stock 461X heads
2. Stock Duntov camshaft
3. 10.5:1 compression ratio

The 3 different curves represent changes in the cam timing and lobe centers.

http://i1043.photobucket.com/albums/...psad56dd09.jpg

Now I need to plug in 12.5:1 and see what if there is any reasonable gains to be had. I dug out a center section for the rear end in order to build the 4.56 diff. More on that later.

Tim

Re: 62 Corvette Pure Stock Build
 

Cam within 1% of stock? Is this lift only? Is it at the valve after lash? Any rules on duration,and at what measurements? GM measured their duration off the seat,and gave some whacky numbers,Some factory cams listing over 320 degrees duration. I would look into that.

Heads are the biggie. Are 3 angle valve jobs and back cuts allowed? Are they measuring port volumes(I am assuming measuring chambers). Here are some tricks. When having the valve job done,have the shop open up the already machined area around the intake valve with a larger diameter cutter,and then mill the head back to stock chamber volume. Have the machinist cut the throat out into the bowl with a larger cutter. These areas are already machined,and I would be interested in if there is a spec for them. If you can cut the throat,but they will measure the port volume,you can usually mill material off the intake face of the head and use thicker gaskets to bring the port volume back down. You can have all the trick work done before the valve job,and deck surfacing,and then have the head shot blasted before finishing. Some very slick stocker racers have been known to put their heads in an oven,and get them soft,then take a hard metal pin and roll it back and forth over the pushrod pinch area to move the wall out without grinding.

Of course blueprinting the block with a plate hone job is a good idea. Do they measure piston to head clearance or deck clearance? Can you zero deck the block and restore quench distance with a composition gasket,or do you need to keep the piston down in the hole and run a steel shim like stock? A composition gasket is a trick in itself since you can get one that matches the head,not the bore,and it will give you even a tiny bit more room before airflow meets the bore. I doubt they will allow you to notch the bores.

Is there an allowance for +/- on stroke and rod length. You can resize the rods a bunch to shorten them and then turn the crank down 20 or 30 under with enough offset to get some extra stroke without tipping your hand as far as machined pistons or whacky deck clearances.

How about a lower volume oil pump,and running less oil in the pan? Run a machined down pump (not a stock size pump with a weak spring) to reduce the amount of power needed to turn the pump,and to reduce the amount of oil flying around,and to reduce the amount of oil you need in the pan.

I would think they require stock thickness ring grooves and rings,but can you run a gapless ring,and low tension oil rings?

I figured I would throw these ideas out there.

Re: 62 Corvette Pure Stock Build
 

best to start here.
http://www.purestockdrags.com/p/rules.html
then give them a call. they will gladly answer your questions.

Re: 62 Corvette Pure Stock Build
 

I would also like to know what of these potential modifications are over the line?

Ryan

Re: 62 Corvette Pure Stock Build
 

It sounds like decking/or head milling would be fine,and even required because they allow for an increase in compression over stock. There is no mention of the valve job or back cut,so I wouldnt see a problem there. A machine cut into the bowl and chamber would be hard to prove once the area was blasted over. It says no stroker cranks or reducing rod journal sizes. I am guessing that they allow normal maching for wear to some level of undersize. I dont see a +/- spec for stroke,so you might be able to get and extra cube or two by letting the crank shop be off a few thou when indexing the crank. It allows for a good ring package and doesnt mention about tension,but a gapless ring is technically 2 piece so you would need to check on that. It says the cam must measure within 1% of stock duration,but they dont mention if it is the cam itself,the lobes themselves or how they are positioned in relation to the crank. Each lobe could be to spec but you can change the centerlines and seperation angle to gain a lot.

They mention tire treatment. It would be hard to police once tires start doing big burnouts(are burnouts allowed?) tires typically harden up after a few runs and would need treatment to bring them back to stock hardness. Even if burnouts werent allowed,cars that spun the tires for long distances off the starting line would have the same effect.

Is there a minimum tire inflation for this class? I could cheat like heck there. I would have the sides of the rear tire tread ground down leaving more depth in the center. This would allow the tire to acheave a full footprint at lower pressure where a non modified tire would start running on the edges. Basically it isnt hard to do,you mount a set of tires on the rims,and inflate them to about 7 or 8 psi and do a few long low speed burnouts,and it will take the edges off them,and they will then run with full contact with 13-15 psi and have a longer contact patch too. You would need to glue the heck out of the tire to the rim to do this without rim screws though. of course I would run about 15psi over the max pressure in the front.

Re: 62 Corvette Pure Stock Build
 

(are burnouts allowed?)

They are encouraged.

Ryan

Re: 62 Corvette Pure Stock Build
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Ryan1969Chevelle</div><div class="ubbcode-body">(are burnouts allowed?)

They are encouraged.

Ryan </div></div>

Ever see the crazy Cajun do a burnout? Smoke city. Don't know who is in second place.

Re: 62 Corvette Pure Stock Build
 

This year Bruno GTO and Dale LS6 did a double burnout to half track so they tie for second.

Ryan

Re: 62 Corvette Pure Stock Build
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: John Brown</div><div class="ubbcode-body">Ever see the crazy Cajun do a burnout? Smoke city. </div></div>

http://oi39.tinypic.com/ad121c.jpg

Re: 62 Corvette Pure Stock Build
 

Time to get cooking. Had to get the 3rd member out of it. Looks like it has a bad pinion bearing judging by noise and the look of the fluid. I am going to rebuild this one for regular road use and build a 4.56 as well.
http://i1043.photobucket.com/albums/...ps0d976812.jpg

http://i1043.photobucket.com/albums/...ps506f227a.jpg

And then start pulling the engine apart to make it rules compliant. I am going to hold off on a full blown &quot;rules build&quot; and get my feet wet for a while.

http://i1043.photobucket.com/albums/...ps5de966a7.jpg

http://i1043.photobucket.com/albums/...ps5ddf3b0d.jpg

Re: 62 Corvette Pure Stock Build
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: napa68</div><div class="ubbcode-body">And then start pulling the engine apart to make it rules compliant. I am going to hold off on a full blown &quot;rules build&quot; and get my feet wet for a while.</div></div>

that is a wise choice. [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]

Re: 62 Corvette Pure Stock Build
 

I really like these early Corvettes. And I love black cars. Glad to see this one is going to be doing some serious duty. No disrespect to your dad, but 1900 miles in 20 years?

On another note, this is way off topic, but I am hoping that air cleaner lid isn't worth much. I had one in my junk pile for many years, and figured I would never use it, so it ended up on the scrap heap one year. I have never owned an early Corvette and didn't know what it fit.

Re: 62 Corvette Pure Stock Build
 

Lynn,

I would have polished that up and used it for a mirror or wall art. Throw away car stuff? You sound like my wife!!!!