11971four4two

part # 404521 1970 Letter L big block Olds 4bbl intake manifold $75 plus shipping

11971four4two

70 intake still available

70F85

Is yours cast or alum ? and can i see a picture thinks

507OLDS

The 404521 intake is the cast iron 4bbl intake that came on 70-71 Deltas,Cutlass,and some 442's.

11971four4two

hi here are a few pics of the intake. it is cast iron

70F85

Thanks But Im trying to find an alum that sits lower than my air gap. I have the org cast one

507OLDS

Look for the Edelbrock O4B. This will fit under an OAI hood with the OAI breather and Q-jet. They made them with Q-jet and square bore openings.

11971four4two

there are not many choices

o4b edelbrock is discontinued. you can try to find a good used one.
Or , if you are using a q-jet carb, find a w-455 manifold.
there are reproduction w30 70 - 72 aluminum intakes available.



found your thread --- i guess you could try your cast iron intake

Air Gap intake or Stock Cast intake ? Hey Guys I have a 1972 455 pulled from a Custom Cruiser 400 turbo trans with a fresh rebuild that has 150 miles on it. Its in a 70 F85 with stock rear end. I only put in a mild cam with new springs and lifters, stock pistons, turned crank. I put a Air Gap intake with a 750 Demon duel line carb. My issue is that its really really weak the thing don't want to smoke the tire. I have a guy rebuilding the stock Qjet that came on this motor and I was wondering if the Intake is alot of my problem. I cant afford the nice factory looking alum intake but I do have the factory cast intake. My timing is set around 12 deg with a hei distributor. I would try about anything right now. Thanks

507OLDS

What car and hood do you have?
When I ran a carburetor,I ran a Port-O-Sonic,then a heavily modified Torker,but both had a 1" spacer and 3" filter,and they fit under my hood.Your air-gap is not any taller. One thing you will need is a drop base,for the filter.There are aftermarket ones available,or one from a 70's Vette is made to fit over a Holley.