1970 Lt1 carb. settings

[al8apex]

the power valve should be 8.5:

http://www.mopar1.us/carbs.html

[todd micheal]

Yes that is the one thing i m going to do is change power value to 8.5 How do i set timing up like you have done with total advance. what is the stock squirter size?? Thanks todd

[markjohnson]

I can't believe it calls for a 8.5 Power valve! On a decent-sized duration camshaft, that PV would be opening early and fouling plugs. I think I'd go with a 6.5 PV. Get Eric's (Vintage Musclecar) advice on this.

[todd micheal]

Any idea what i could advance timing up to?? And from there i will get a vac. reading and split in half and pic power value.

[todd micheal]

How do I contact eric (vintage muscle car) any one.

[markjohnson]

I'll do my best to verbally explain this since no one else has stepped up. I'll assume that there's no timing tape on the balancer. Take a measurement on your timing tab from the O-TDC hash mark down to the 12 degree hash mark. Multiply that measurement X 3 to come up with the distance where 36 degrees should be on your balancer. Mark this position with some white paint/chalk on your balancer, while revving the motor up to 3000 RPM, check where your timing mark is on the timing tab. That's the total degrees. I use a very simple Timing Light (without the dial) and make sure the Vacuum Advance is dis-connected. 36 Degrees total is a great starting point and motors are usually very happy righ there.

[Salvatore]

amen!

[Xplantdad]

<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

[YENKO DEUCE REGISTRY]

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]