What cam would you run in a day 2 69 Z28

[napa68]

I'm a huge fan of the LT-1 cam. I've used it in a few different 327's. 11:1 and 9:1 pistons. Still makes good vacuum to run the brakes and easier to tune. I have one in a 62 F.I. Corvette right now and it runs HARD.

Hell, I'd put that cam in my garden tractor if I thought I could get it to fit!

[NorCam]

Here is Tim's garden tractor come next summer...

[Steve Shauger]

I went with a Comp Cams grind selection that was based on my engine displacement, compression, and rear ratio. When done with modifications roller rockers , headers and bored 40 over, the engine put out 409hp @ 7050rpm and 373lb-ft of torque. It's a flat tappet cam. The modern dual pattern and aggressive ramp cam allow for both HP & Torque. I have the grind card and will send it to you. It has a nice lope but I could care less about the idle sound, the drivability & performance is what I care about.

[napa68]

Originally Posted by norcam

here is tim's garden tractor come next summer...

lmao

[rlw68]

I have these 492 heads also but currently into the Day 1 thing. They do have screw in studs already though Would a cam choice here be any different or perhaps make the 140 happier?

[KenMaisano]

It really depends on what your looking for. I purchased a 71 Z It was all original but indy cylinders heads built the engine, stroked it to 383 and used a Hydraulic XE 268H 224-230 110 cam. it had super strong low and midrange with 373 gears and the Four speed. but at 10.5 to 1 and California fuel. Boy did she rattle. So to bleed off cylinder pressure and get back to solid lifters. I installed the Nostalgia Pluss 12-673-4 247-254 112 .012Lash.. Best Sounding cam Ever.. Lost all its torque and dead on the top. And this was a 383.. I figured it would hate the stock exhaust.. But no more knocking.. I installed shorty headers and a low restriction transverse system. Now she had Killer mid and top end power.

When I was building my 69 Z engine I was planning on Dropping the compression to 10to1 and using this Comp XS 274S-10 236 242 110 .500 This would of made that little engine run much better than its high compression big cam factory setup. And been pump gas friendly, still sound great. But after tearing down the engine and seeing every factory part still there, I didn't have the heart to change it. and rebuilt it all original.

[Salvatore]

Use the Manley (stock type) Rockers cause they will not go bad and change the rear gear. No matter what cam a 302 Chevy runs it needs a stiffer gear or change the trans gears to have a lower first gear for easy light to light driving. Re do the distributor curve and have Eric tune/go over your carb. Then go have fun.

[COPO]

With the M-20 trans and the 3.73 rear gear, you're already equivalent to an M-21 or M-22 with a 4.27 rear gear. Running a 4.56 rear with the M-20 would be equivalent to a 5.22 rear with a close ratio trans. First gear would be a screamer.

[Salvatore]

Love my M20 with the 4.56 gear in my Z.

[aaronkl84corvett]

I wound up ordering a custom ground Bullit cam -

can't wait to install it - I have a set of roller tip comp 1.52 rockers, heads already have screw in studs and guide plates - and I will be installing stiffer springs to compensate -

the cam is thus!
CHS 278/282-F12+5
Duration @ .050 = 248/252
Lift with 1.5 rocker = .530/.540
Valve lash (hot) = .016/.016
Lobe separation = 112
Intake centerline = 107

so kinda like a tight lobe LT1 with much more aggressive ramps.

I'll be running a set of 1 3/4 Kustom clone Z28 Headers -
I ordered a Flowmaster American Thunder exhaust setup = but I won't be running he Super 44 mufflers, but rather (either) the Dynomax Ultraflow SS or a Set of Borla XR-1 mufflers -
I like this system because the tail pipes (while larger at 2.5") exit in the stock location with a 45" cut like the original tailpipes.

keeping the m20, and 3.73s

Also will be installing a set of BFGoodrich or Coker WideOval Radials on a set of vintage Minilite wheels -

CAN NOT WAIT!!!