C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

is it posible

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Old Dec 3, 2011 | 04:36 PM
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to use a DFI#310-74190 throttle body on a 90 vette?

I got it along with an intake and runners.

if not, what do you think is worth? the price on it new blew my mind
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Old Dec 3, 2011 | 08:47 PM
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So long as you use a 85 - 88 throttle cable
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Old Dec 3, 2011 | 09:13 PM
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have a much bigger problem. the whole intake set up i bought, manifold, runners, plenum and throttle body are from a 85-88 and my car is a 90.

im told i can still use the system if i remote mount and run a vacume line to the MAP sensor (run a vacume line from where? t off the exsisting vacume lines in the manifold?)

install a plug for the cold start injector, and the rest all bolt up?
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Old Dec 5, 2011 | 05:35 PM
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OK! now we are talking

I picked up the edelbrock high-flow intake and runners for $450 off eBay, with it came the 1000 CFM throttle body. all off a 1988 or older motor.

The Plenum he used with it was included, so the throttle body bolts up to the plenum.

the plenum is port matched to the runners (score)

I have purchased the cold start injector kit from ebay for $29.
My machine shop is going to add a third vacume port in the 90 stock location and im going to mount the MAP sensor on the firewall.
Now all i need is the throttle cable from an 88 vette and I'm in business.

Im not sure i need that big of a throttle-body, but the motor should be able to breathe!

Im thinking the $489 (after shipping) was a pretty good deal for this set up, and the $60 for the additional parts seems a small price to pay to use the throttle body that i got basically for free.

Thanks for the help
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Old Dec 5, 2011 | 06:14 PM
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Make sure you get your engine retuned to the new throttle body and intake.
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Old Dec 5, 2011 | 06:55 PM
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It is scheduled for a tune shortly, that's why i got a bit panicked. i'm pretty sure i could get my money back out of it if it didn't work, but i really wanted it on there for when I get the tune.

This thing should tear up the road come spring
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Old Dec 5, 2011 | 07:03 PM
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Originally Posted by rbates74
It is scheduled for a tune shortly, that's why i got a bit panicked. i'm pretty sure i could get my money back out of it if it didn't work, but i really wanted it on there for when I get the tune.

This thing should tear up the road come spring
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Old Dec 5, 2011 | 07:16 PM
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Edelbrock intake $415.00
Edelbrock runners $349.00
Throttle body.BBK .$ 329.00.
Port matched Plenum $ 200.00
Total $1,293.00 Plus Tax

Yeah, I'd say you got a pretty good deal....WW

Last edited by WW7; Dec 5, 2011 at 07:21 PM.
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Old Dec 5, 2011 | 08:04 PM
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Porting on the plenum looks home done and kinda rough. so im not for sure its worth the $200, but im thinking even if it looks kinda scary it will flow better then stock.
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