Re: 1970 Lt1 carb. settings
 

amen!

Re: 1970 Lt1 carb. settings
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: todd micheal</div><div class="ubbcode-body">How do I contact eric (vintage muscle car) any one. </div></div>

Here...

https://www.yenko.net/ubbthreads/ubbt...&amp;User=1124

Re: 1970 Lt1 carb. settings
 

Just saw this post, had the exact same issue with my Deuce Todd. The jetting, total timing, and timing curve is critical to these engines. The fact that you can't break the tires loose without a clutch dump is dismal. (You will soon be able to break them loose from a 15mph+ roll, and get 2 ft+ out of the second gear hit!).

I have my setup in my glove box, I'll dig it out tonight and respond then. Special thanks to COPO Pete for my setup - it's right off his car! You might do a search here on the site for the thread where I went through this, my issue initially was an off-idle stumble - tracked it down the idle cam, got to use the white one, second hole..... stumble was gone, instantly!

13.50 @ 105mph, stock and on the skinnies! [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]

Re: 1970 Lt1 carb. settings
 

Marlin, You are my hero... I tried to send you a pm but mail box is full? Wow you have same prob. Yes it is depressing, all that compression and internals and 4:10 gears and car is nothing special to write in about. Im not looking to make a rocket ship out of it, but i knew there had to be more some where.Thank you for responding. Todd

Re: 1970 Lt1 carb. settings
 

As mentioned before, I am rebuilding/restoring the original owner's (Roofs) dual point, mechanical-advance-only Mallory YC-465HP distributor for my Deuce. Any recommendations on setting this up? Dwell? All advance in by.....? Earl Roof told me that Mallory dual point really woke his car up.

Good thread. Thanks!

Re: 1970 Lt1 carb. settings
 

Ok, the complete setup was not in my glovebox - but in a box in the basement [img]<<GRAEMLIN_URL>>/rolleyes.gif[/img] Can't do me much good there, but....

My Carb setup:

Accelerator pump cam = white one, installed via hole #1
Accelerator gap at w.o.t. = .015
Accelerator gap at rest = 0
Accelerator spring = old style, no nylok nut

Secondary Vacuum Spring color = Yellow

Primary Power Valve = 6.5
Primary Jets = 72

Secondary Power Valve = Blocked
Secondary Jets = 82

Squirter = 31


Timing = ~36 degrees total, all in by 2000 rpm. Personally, I like the dial type timing lights.

Spark plugs = use the NGK's!!!!


Suspension setup:

Front tire pressure = 44psi
Rear tire pressure = 40psi

Front &amp; Rear shocks = good, basic gas shocks - can use 50/50's

Rear springs = 2 spring clamps on each side, both clamps in front of the rear wheels but on different leaf stacks

This setup should get you started, let us know how you make out.

Re: 1970 Lt1 carb. settings
 

OEM stock were 72 primary and 76 secondary, they were way to rich for the 1100 feet elevation here in Phoenix ...

the above may work ok for a drag car but will be &quot;phat&quot; for the street

again, IMHO, YMMV, etc

Re: 1970 Lt1 carb. settings
 

Very helpfull information.

Thanks to Marlin and Peter for this heads-up. [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]

Re: 1970 Lt1 carb. settings
 

For what it's worth Eric Jackson restored and rebuilt my carb for my 70Z about a year ago using all the stock type parts...jets, power valves,ect. and my car never ran so good! You would be surprised at what a difference it makes to have someone who really knows what he's doing rebuild your carb and use the correct parts, makes. I rebuilt the carb about a year or so before I sent it to Eric and my car runs absolutely perfect now. I do however agree with Marlin and I also use the NGK XR5 plugs...they seem to be a little hotter plug than the R43 and they don't foul.

Re: 1970 Lt1 carb. settings
 

Marlin, forgive me but how do i set accelerator pump a w.o.t. ( hold open and should have .015 gap) What does old stlye spring look like for accelerator pump? with no lock nut. And what is the best way to block off p.v. in secondary? What number ngk's And i do have a dial in timing light. thank you for all the help. TODD