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305 TBI to L98

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Old 04-12-2005, 07:28 PM
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Car: 91 Camaro RS
Engine: 305 TBI
Transmission: WC T-5
Axle/Gears: 3.73
305 TBI to L98

I have a chance to get an l98 from an 85 vette for cheap.

What will I need for this swap?

Will it bolt up to my WC T-5?

It comes with the computer, but the car it came out of had an automatic tranny.

Also, I've never done a motor swap before so what are some things I should know?

Thanks in advance for any help.
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Old 04-12-2005, 07:32 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
The engine will bolt to your T-5, but your flywheel won't bolt to that engine. You'll need a 153-tooth, 2-piece rear main seal version.

I've heard, but don't know personally, that the Vette & f-body oil pans are different, and again your pan won't work on that engine for the same reason. You'll have to find an '82-'85 type pan (others may fit as well).

What are some things you should know? Take a bunch of pictures before you take anything apart. Label everything you disconnect or unscrew. Use a cherry picker with a tilt sling for ease of removal and installation. If you enlist the help of others, keep the beer in the 'fridge until you quit for the day.
Old 04-12-2005, 08:39 PM
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Car: 91 Camaro RS
Engine: 305 TBI
Transmission: WC T-5
Axle/Gears: 3.73
Thanks for the help.

What about the computer? I have the computer that goes with the engine, but it came out of a corvette with an automatic. I'm pretty sure it won't work properly for a manual car. Can I just swap the chip from a manual corvette from the same year?
Old 04-12-2005, 09:36 PM
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Car: 82 Berlinetta/57 Bel Air
Engine: LS1/LQ4
Transmission: 4L60E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
From what I've gathered, auto vs. manual computers aren't much different. The auto will send a lock signal to a non-existant torque converter (a grounding signal, really), which if there's nothing to receive the signal, no harm/no foul.

But, you could get an '85 manual Vette computer if you liked.
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