spreadbore vs squarebore???
#1
spreadbore vs squarebore???
My big block currently has a 'Brock spreadbore intake. Im running a 'Brock 750 carb....Performer, which is a squarebore. I recently added a phenolic spacer and Im wondering..is this spreadbore intake hindering performance because Im running a squarebore carb?
#6
The plate I am talking about is Edelbrock part #2732 you can find it here on this page
Edelbrock.com - Installation Items - Adapters & Spacers
IT will prevent the vacuum leak that 69 is talking about. some other spacers don't seal the machine ports on the bottom of the Carter AFB/Edelbrock Performer series Carbs.
Massey
Edelbrock.com - Installation Items - Adapters & Spacers
IT will prevent the vacuum leak that 69 is talking about. some other spacers don't seal the machine ports on the bottom of the Carter AFB/Edelbrock Performer series Carbs.
Massey
#7
And.....the phenolic spacer you should have used would be the 4-hole type. That will give you a better "venturi effect", and better low-end torque.
A wide open spacer would instead be more for higher rpm response, as in the tunnel ram effect, but on a smaller scale.
A wide open spacer would instead be more for higher rpm response, as in the tunnel ram effect, but on a smaller scale.
#8
The spacer is the 4 hole type. I put a 4 hole gasket between carb and spacer, and a open square gasket between the intake and carb.
#9
Ok, but the opening for the secondaries on the spread bore intake manifold is wider than the square bore carb base, or gasket. If you're relying solely on the gasket, without an adapter plate, or a square to spread bore adapter spacer to seal that part of the manifold, you may be getting a vacuum leak there.
#10
Ok, but the opening for the secondaries on the spread bore intake manifold is wider than the square bore carb base, or gasket. If you're relying solely on the gasket, without an adapter plate, or a square to spread bore adapter spacer to seal that part of the manifold, you may be getting a vacuum leak there.