Engine Specs

[timsweet]

Finally settled on the build of the 351C for my '73.

The cylinders cleaned up good at .030 but I had them bored .040. (adding a tiny bump in displacement to 358 CID)

Had to knock the crank down to .020.

Adding Edelbrock 4bbl Carb 800 CFM with Electronic Choke and Performer 2750 Intake Manifold, minus EGR.

Summary:

351C bored .040

Crank .020 and Stock cam

Flattop pistons stock rods

Edelbrock 4bbl CARB 800 CFM ELEC CHOKE

Edelbrock Performer 2750 Intake Manifold

 

[73pony]

Couple of things to consider or think about. Are you going with stock 2v heads? The 800 CFM carb might be a little much depending on what you are using for a cam. Also I have not heard good things about performer intake.

 

[timsweet]

Well I've heard both for the intake. Nothing as in what is the specific problems that seemed credited directly to the Performer - likes cracks after 200 hours of operations or warps in the AZ heat. Anyone have specifics?

800 CFM is perhaps a bit much but it was one of the recommendation on the Edelbrock chart and I think it can be dialed in and work just fine with the 2v heads. What would be the specific concerns with the combo?

Tim

 

[Mister 4x4]

Wow - I've not heard anything bad about Edelbrock Performer intake manifolds. I have one on mine, and it's working as it should.

Honestly, if that statement "cracks in the Arizona heat" had any kind of merit at all, the manifolds would crack about 15 minutes after first fire-up.

 

[timsweet]

Just a point of clarification - no one has said it cracks...just an extreme imaginary example.

Honestly, if that statement "cracks in the Arizona heat" had any kind of merit at all, the manifolds would crack about 15 minutes after first fire-up.

 

[73pony]

I was going off several comments I have read on this forum regarding the performer intake as well as the experience of a friend of mine who put one on his cougar and wasn't happy. He switched to an airgap and liked it. His comments were not terrible down low, slight improvement over stock 2v but a real dog at higher rpm. As for the carb, I am planning a 750 CFM on my build and think that might be too much. I will be running 2v CC heads with a pretty aggressive roller cam set up and am considering dialing back the carb size from 750 based on several recommendations.

 

[Don C]

With open chamber heads and stock cam a 650 cfm carburetor would be my choice. It would have much better throttle response around town and not likely to bog down at wide-open throttle.