Wondering about how to build my 455 and keep the 1968 style AOI Air cleaner and scoops. If I change the intake to an Eldebrock Performer and say a Holley double Pumper carb will it work/fit with 1968 AOI setup. It’s a 1968 car as well. Does anyone run anything like this? Thanks Tim

 

A Performer 455 intake mounts the carb 1.65" higher than a stock 455 intake.

Your air cleaner not have that much extra clearance to the hood. Remember you will need a bit of extra clearance to give room for engine rocking with acceleration (and deceleration if you have 4-speed).

Put modelling clay on your air cleaner, close the hood, and rev the engine to see how much existing clearance you actually have.

 

I have a Performer intake and 750 Holley Street Demon carb on my '69 (400G) and installed a reproduction OAI set-up complete with the air cleaner and hoses. No problems whatsoever. I've read on this forum that the Torker and air gap intakes are taller than stock. I do believe the Performer is a little taller but many people have installed these under the factory hoods.

 

If you haven’t purchased the carb yet then buy something more modern and tunable. The old Holley double pumps have been surpassed by waaaay better stuff.

 

I have had a performer, and currently run a Torker on my 69 with the OAI. It does fit, but it’s close to the hood. I run solid engine mounts, so no engine movement problems. Hope that helps.

 

Thanks to everyone who responded. It sounds like it should work for me. I looked on Edelbrock website and it says that the performer intake is .80” taller than stock.

 

The carb pad height of an Olds 455, non-Toronado, intake manifold is 3.30".

The following is from the Edelbrock website:

Installation Notes

• For correct gasket kit when using # 2151 in a marine/competition application, contact Mondello Performance at (805) 237-8808.
• Manifold height: A-4.40", B-5.50"
• Carb pad height: 4.95"

Therefore the carb pad on the 2151 intake is 4.95" - 3.30" = 1.65" taller than stock.

Check your existing clearances. It's easy to do.