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install 1990 engine into 1976 corvette

 
Old 05-13-2019, 08:13 PM
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Myoldvette76
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Default install 1990 engine into 1976 corvette

Hi, I am installing a 1990 corvette engine L98 into my 1976 corvette. The 76 had a 14 flywheel and a push clutch.The 1990 has a 11 inch flywheeel and
a hydraulic pull clutch. does anyone know if there is a 11 inch push clutch and pressure plate available to install in the 1990 flywheel which will allow me to keep the original fork and bell housing and rod system . Thanks for your help.
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Old 05-13-2019, 08:29 PM
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jackson
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There're TWO threads in this C3 tech forum

We already Know 76 flywheel does Not fit 90 crankshaft.

? What size is 76 flywheel? 153 Teeth or 168 Teeth?

? Do you have 90 flywheel?

? What size is 90 flywheel? 153 Teeth or 168 Teeth?

? Will you use 76 bellhousing or 90 bellhousing?
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Old 05-13-2019, 08:49 PM
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Myoldvette76
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the 76 has 168 teeth.
the 90 has 153..
i have the flywheel for the 90. it takes a 11 inch clutch
i would like to use the 76 bellhousing with the push fork
if i were to get a 90 bellhousing then i would have to go to
a hydraulic clutch. that is what i am trying to avoid.
also the 90 bellhousing will not except my trany which is a 5 speed tremic.
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Old 05-13-2019, 09:00 PM
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jackson
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does your tremec have 21 spline input shaft?

some small (153T) flywheels have 2 or 3 bolt patterns ...
... have you tried your 76 disc & pressure plate (cover) on the smaller 90 flywheel yet?
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Old 05-13-2019, 09:06 PM
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jackson
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FWIW ... unless you have an adjustable aftermarket starter ... you have to change starters when switching between 153T-168T.
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Old 05-13-2019, 09:16 PM
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Myoldvette76
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the tremic is a 26 spline.
the 76 flywheel is 14 inches.
the 90 is only 11.5 the disc is 11.
i have the starter that goes to the 90
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Old 05-13-2019, 09:39 PM
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derekderek
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So get a 168 tooth 87-up flywheel. Same bell, clutch and starter. Except early starter field housings need a notch cut to clear dipstick. Now start shopping for electric fuel pumps.
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Old 05-13-2019, 11:01 PM
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