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Old 09-04-2021, 10:46 AM
Steve C. Steve C. is offline
Ultimate Warrior
 
Join Date: Dec 1999
Location: Liberty Hill, Tx. (Austin)
Posts: 10,434
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Here is another build to serve as an example only, this engine built by Dave Bisschop....

.030-over 400
6X iron heads ported to 260 cfm at .550" lift / 9.3 compression
Comp hydraulic flat tappet cam
246 @ .050" intake duration
108 LSA
0.544" lift with 1.6 ratio rocker arms
Prepped model 3310 Holley carb (800 cfm)
1 -3/4" headers

On the dyno the Torker II intake with a 1-inch carb spacer made the most peak power- 459 HP at 6250 rpm with 451 ft.lbs. torque at 5000 rpm.
But the Performer RPM intake had a broader torque curve.

Now for conversation, and food for thought.... a set of 72cc Edelbrock heads with only a mild clean up would be in the 288-300 cfm area. And would be over 10:1 compression here.

.

__________________
'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 )
Old information here:
http://www.hotrod.com/articles/0712p...tiac-trans-am/

Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine)
5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension
https://www.youtube.com/watch?v=qDoJnIP3HgE