Manifold search

[undy]

Originally Posted by BOURRET

Thanks for the remarks.
The height between the bottom of the manifold and its maximum height is very critical, I think I have about 1/4 inch clearance available!!!
My actual (porous C3EA 9425) had been carefully re-worked three years ago to match the Edelbrock performer cyl. heads.
What would you see to save the "ponies" ? Switch to a big single quad carb???

Depending what manifold height you have available you might not have enough room for even a good flowing single carb two plane, much less a single plane. I'm running a Blue Thunder 427 MR on my KC Pond 482. Keith said that it would flow well for my application (Stage II CNC'd eboks, 11 to 1 and 240/250 @ 640 hydraulic roller) It's actually about 1/4" taller than the Performer RPM. I'd like to switch to a Super Victor but like you am space limited for that height. What's your max clearance measurements, manifold base to carb pad height (front and rear) Blue Thunder does make a medium riser dual quad set up, not knowing if it'll meet your clearance requirements. I like the Blue Thunder manifolds as the are fairly accurate clones of the OEM stuff, with flow enhancements too.

Depending on your setup, probably +/- 20 hp drop... maybe more, on running a low riser.

Dave