Intake manifold and carburetor change

[Puffdaddy#1]

Rqb 1898, My 72/73 400 cu. in, I'm looking to swap to a four barrel carb set up, any good recommendations?

[wildfelr]

RQB3263/81/305   YES I DID THIS ABOUT 2 YEARS AGO SUCCESSFULLY ..... Edelbrock alum intake   and Holly carb    both from Summit....worked fine right out of the box ....  be advised you may have hood clearance issues.... i was given a low profile  360 degree open air filter  that extends down over the carb a bit to solve the problem.... these are prob available from Summit also ....use RTV and not the worm shaped gasket on the front and rear ends of the block to manifold mating surfaces.... good luck ....see ya on the Boulevard .... Bill in Florida

[Gunslinger]

Call Summit Racing’s tech line…explain what you have and your concerns.  They will give you solid recommendations.  

[Puffdaddy#1]

9 hours ago, wildfelr said:

RQB3263/81/305   YES I DID THIS ABOUT 2 YEARS AGO SUCCESSFULLY ..... Edelbrock alum intake   and Holly carb    both from Summit....worked fine right out of the box ....  be advised you may have hood clearance issues.... i was given a low profile  360 degree open air filter  that extends down over the carb a bit to solve the problem.... these are prob available from Summit also ....use RTV and not the worm shaped gasket on the front and rear ends of the block to manifold mating surfaces.... good luck ....see ya on the Boulevard .... Bill in Florida

 

[Puffdaddy#1]

Thanks gonna look into that, looking for a bit more performance ya know?

[Mel]

Some of the aftermarket gaskets are a bit thicker than the OEM's and thus the manifold sits a bit higher.  Bottom line, don't put a thin bead of RTV on the front and rear 'china walls'; use a good thick bead or you'll end up with an oil leak.  And, use brake cleaner to be sure all surfaces are clean of all oil and grease.  How do I know?  Experience.

[John D]

on my 79 the front is dropped back down to Stude height, with a C4 front suspension/frame grafted to the frame and wheel arches restored to 63 cut. Hood clearance is short and it had a single plane low profile Torker manifold with an older carter AFB. Not very smooth off-idle, and that's typical of single planes. 

After much deliberation I bought and installed a new dual plane Edelbrock Performer EPS, which is ~3/8" taller. The change was nothing short of amazing. I did have to tweak my air filter housing, but there was room. 

The old AFB was still a bit persnickety (and didnt have a choke) so when I saw a Holley 4150 on sale I picked one up. I believe I'm now running the same setup as Wildfeir. It took a little more effort but I'm pretty happy with it. I may go to a different power valve but it ran pretty well right out of the box.