LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Tb bypass

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Old 01-06-2015, 01:42 PM
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Tb bypass

So i was reading and i wanted
to verify before i do it this weekend
if there is a certain way to do it on
a 94 ?
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Old 01-06-2015, 01:49 PM
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Re: Tb bypass

Yes. 93/94 you take the two coolant hoses off the bottom plate of the throttle body and connect the rubber hoses together using a 3/8" hose barb, and a couple clamps.

95-97 is different, and does not require the hose barb, and discards one of the pieces.

In all years:

.... DO NOT SPILL COOLANT ON THE OPTISPARK DISTRIBUTOR.

.... REFILL THE COOLANT SYSTEM AND BE SURE TO BLEED ALL AIR OUT OF THE SYSTEM.

Capping the connections on the throttle body bottom plate with vacuum caps is optional, and makes no difference, one way or the other.
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Old 01-06-2015, 04:29 PM
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Re: Tb bypass

Great thanks alot Fred . Now is this just a waste of time or does it make a difference ?

IM NOT SAYING SEAT OF PANTS DIFFERENCE BUT FWHP OR RWHP TQ ANYTHING ?
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Old 01-07-2015, 08:57 AM
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Re: Tb bypass

Dyno results = +6.3 peak HP at the rear wheels:

Modifications #8
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