Throttle body?

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09-10-2009, 11:42 PM

SmokinZ28lt1

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Throttle body?

Well I want to get a 58mm throttle body for my 1994 b4c but I read the reviews of some aftermarket ones but almost everything i read was bad. Now i'm woundering just how far i could bore out my stock throttlebody,can it be bored out to 58mm...I'm thinking probably not...

09-11-2009, 01:38 AM

Bersaglieri

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No it cant, 52mm is pretty much the limit.

-Dustin-

09-11-2009, 05:30 AM

Injuneer

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52mm is also the diameter of the holes in the intake manifold.

09-11-2009, 10:59 PM

SmokinZ28lt1

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yea i know the holes in the intake are 52mm but i can port those out myself... so is 52mm the absolute most one can be bored?

09-11-2009, 11:04 PM

SmokinZ28lt1

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also is the 48mm the mesurement of one hole of the throttlebody or both of them?

09-12-2009, 06:15 AM

bw_hunter

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The pratical maximum on the stock TB is 54mm...I had mine bored to that. You will have to open up the stock manifold openings to accept a 54mm bore or the throttle blades hit.

The number quoted is the diameter or each bore.....