I am going to do the Ult. TBI mods. I wasn't going to do anything until i build my 383 but i can't stand it. How neccessary is injector spacer. I only ask because I don't have the facilities at the moment to make my own, so I would have to purchase one. Turbo City want $20 for one. Thats rediculus for a tiny peice of plastic(I read someone had a bad experience with them).
My second question is this. A friend of mine is machining me a throttle body spacer. I am going to make it 1" thick, made of aluminum (phenolic resin is scarce at work, Uncle Sam is paying for it, so I can't complain). Since the space ring is about 1" wide, if I ditch it, and use a drop base 3 or 4" inch air cleaner, I shouldn't have any problems right. Also should I have it machoined with a 1 11/16" holes, as to use with a larger TBI adapter. Or, Should I have him machine it for the stco 305 size holes. Or, machined so it goes from one size to another. I now this is alot, but I'm beating my head in trying to make the decision before I spend the cash.

Thanks

 

drop base without spacer will hit linkage.

305 is 1 11/16, have him bore it from stock on the bottom to 2" on the top, that way if you every want to get a bigger tbi you can.

[This message has been edited by snflupigus (edited February 28, 2001).]

 

Thanks for the heads up with the drop base.

Your right about 305 holes, my bad. my thinking was that having larger holes all the way through would make a little turbulance at the transtion between the TBI and the spacer. But, I geuss it doesn't happen with other adapters (ie. carb), so why would it for that. I plan on changing the intake anyway, so I think i'll go the whole way. Geuss I'll have to do the cam to, wifes gonna kill me.

what about the injector spacer?

 

there i s a gasket beneath the injector tower, go to a parts sftore and get 2 of them. for less than 3 bucks prolly you can have the same thing, just not as flashy.

lata
tim

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91 Camaro RS-LO3,Auto.
14.215@94.30 w/ 1.917 60'

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