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I recently tried to find an aluminum intake manifold for my 65 Thunderbird. I found that Weiand, Edelbrock and Blue Thunder made the part. Problems with Weiand and Edelbrock was the port size fit only the 67 and up FE 390 and Blue Thunder only had med to high rise manifolds. I need a dual plane, low rise, single 4bbl, intake aluminum manifold. What are pre 67 FE 390 Ford lovers doing to solve this problem?
The later manifolds have smaller ports and will work just fine on the older heads. The step is from smaller to larger, the step just acts as a revison pulse dam. It's going from large to small that is a no-no. FYI, the smaller ports increases the air flow velocity which improves low end preformance without hurting the top end.
Also if you dont buy an intake made for the bird which I know none of...all FE intakes the carb pad is slanted..except for the t-bird runs flat if I remember right...and I have seen somewhere the wedge spacer to run on them to make em flat..as there motor sets flat in the early birds...
Also if you dont buy an intake made for the bird which I know none of...all FE intakes the carb pad is slanted..except for the t-bird runs flat if I remember right...and I have seen somewhere the wedge spacer to run on them to make em flat..as there motor sets flat in the early birds...
RJ
Why are they slanted anyways? I noticed that when I got my intake out from PYP. Was that for fuel bowl leveling or something?
Why are they slanted anyways? Was that for fuel bowl leveling or something?
Yes.
Originally Posted by lrd56
i bought a 4bbl cast iron 390 manifold are they any good or are they junk.
It is good for street driving, hauling, off roading; anything where you need useable torque at low RPMs. Some prefer to shave 80 pounds with an aluminum intake.
If you plan on driving with the throttle wide open most of the time, there are better intakes for that.
phenolic spacer for a 70 thunderbird is what yas need . mine had the engine at the slant { 429 w/ holley } and it's spacer was the wedge shape . got a new one 5-6 years ago before i sold it at napa . other prob, i stole the 4bbl intake off a 65 bird a buddy was parting out for my fe's . the fe stuff new or used is getting pricey so i keep my eyes open and scrounge .
ive checked the parts stores for a phenolic spacer no luck they laugh at me and call me a dinosaur.summit doesent have one.ill have have one custom made out of aluminum.i live in mohave county parts for old fords dont exist.
looki in tha classified for my fe stuff.
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