Thread: What do you pros think??

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I predict that you will be sick of this motor within 30 days. Once you wake up and realize that you will have to feed it race gas for the rest of its life, you'll probably be tearing into it to change either pistons or heads.

OK, the block deck height is 10.320" The stroke radius is 1.925". The rod is 6.605". The piston is 1.752". The stack adds up to 10.282". Deducting the stack from the block deck height leaves us with a piston deck height of 0.038".
Here are the values:
cylinder 4.390" x 3.850", 954.9cc's
head 75cc's
piston 4.2cc's
piston deck height 4.390" x 0.038", 9.4cc's
gasket Edelbrock 7314 4.5" x 0.048", 12.5cc's
Total suckin' 1056
Total squeezin' 101.1
Divided equals 10.445:1 static compression ratio with 0.086" squish.

What would I do? I'd cut the block decks to zero and have the thickness of the gasket as the squish dimension. Then I'd use enough cam and the 95cc heads to get the motor into pump gas territory and make a scary fast motor.
Zero deck, 0.048" squish, 95cc heads, 9.55:1 static compression ratio. CompCams 34-711-9 solid roller cam, custom ground by Comp to reduce lift to 0.700" so you could use the springs that Edelbrock assembles on the heads (0.700" lift limit).
http://www.compcams.com/Cam_Specs/Ca...csid=1032&sb=0

RPM HP TQ
2000 171 450
2500 220 463
3000 281 492
3500 360 541
4000 440 578
4500 513 600
5000 568 596
5500 602 575
6000 612 535
6500 591 477
7000 548 411
Peak volumetric efficiency 97.3% @5000
Peak BMEP 193.8 @4500
These numbers were achieved with 0.700" lift on the DynoSim. If you would prefer a hydraulic cam, call Comp and see if they can grind you a hydraulic roller that is close to the specs on this solid roller. In my opinion, using a flat tappet cam in this day and age is just insane.