I_race_a_chevy

Can I put a carb intake on a 1987 302 that has fuel injection on it? I wont have to change the heads or anything?

Thanks.........

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EDXR8

Yeah you can but I think you will need to get rid of all the rest of the EFI stuff too, mainly the distributor. You just loose all the benefits of the fuel injection, but carby stuff is cheaper.

creature3

why would you want to put a carby on in place of Fuel injection???

I_race_a_chevy

Im going to race it, and the rules state "no fuel injection"

Thanks for the quick replies! Im sure Ill have more questions for you all in the future!

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creature3

Aaaahh, I see. How come the rules say no fuel injection? Is it a "classic" rule or something? Or does the engine have to be in original trim?.

To change from F.I. to carb shouldn't involve a head change, as the injectors are probably in the inlet manifold. It is rare that the injectors are actualy in the head. The major alterations will be in the electronic area, as F.I. needs a pulse to tell it when to operate. Basicaly it will mean ripping out all the EFI electronics, and replacing that with stabdard wiring to suit an "old fashioned" distributor. It will mean a new inlet manifold, as the EFI ones are designed differently to the Carb ones, as far as swirl and tract length are concerened. Std manifolds for 302's and 351's are the same. If you are racing, you may need a different manifold though. The basic answer is: no, you don't need to change heads.

Happy racing

302xm

windsor 302 and 351 manifolds are different and cant be swapped
check out this site its all about running carbs on 5.0 motors.
even goes through the conversion for you
http://www.jason.fletcher.net/tech/e...b/efi-carb.htm
Have fun!

creature3

Sorry, I thought you were talking Clevelands

creature3

Had a look at the site. Interesting and very informative.