Well I went to the junk yard today, and found an early '93 Beretta with a 3.1 5sp. and a Grand am (about the same year, not sure) with a 3.1 5 sp.
If I bought a turbo sunbird with an auto, would I be able to use one of those trannies? I've done a few searches on here, and from what I've found is that it will bolt up. But that's about it. Will it stand up the power of the turbo 2.0? What about drive axles?
I found a couple Cavalier 2.2 5sp. but those trannies won't do me any good, will they?
Sorry if you guys have answered this already, but I searched and didn't find much.
Thanks.
the 1.8/2.0 ohc motor uses its own bellhousing bolt pattern, nothing else will bolt up to it. the 1.8/2.0 ohv, 2.2/2.8/3.1 all are interchangable, but wont bolt up to a 2.0 ohc.
the tranny in the 2.0 turbo is actualy all the same internals as a v6, except for 2nd gear is different. the axles are all the same aswell. if you can find a 2.0l turbo case, you could put the v6 guts inside it.
basicly, you need to find a 5 speed from a 2.0l turbo, or a 4 speed from a 1.8 turbo.
Oh, I saw 2.0 ohv and V6 trannies interchangeable in one of your posts, and I just thought 2.0 ohc. My bad.
Thanks sharkey.
My Sunbird turbo is an automatic, and it very well may stay that way. I'm building it stock to start with aside from ARP rod bolts and main studs, but eventually I plan to go for high boost, and I don't think I would want to have to shift that fast. That's just me though
Where does the 2.3l Quad 4 motor come in? Are the trannies behind those applicable at all, or not?
The turbo Sunbird 5 speed has a different second gear ratio than the Q4 or V6 5 speed. It's not really needed imo. Trans from v6 or Q4 cars might have a different final drive ratio than the 'bird trans. I feel that a numerically lower final drive ratio is more appropriate to the boost curve produced by the stock T25 than the factory 'bird ratio.
I believe the block between auto and manual 2.0 is different. Look through the archives. Protonus has been through this and he did a nice job of explaining it.
-->Slow
There's an extra "ear" on the bellhousing area of the manual trans block below the starter area. You have to cut it off to use a manual trans block with the 125 transmission. It physically will not bolt up with the "ear" there. I tried, I lost. My sawzall gave me victory though!
Tony
Tony
1987 Sunbird GT turbo convert
Ported intake, Fiero 53 MM TB, 52 lb inj, ported and flowed head, tube header, Mitsu TD06, ARP rod
bolts/head studs, adj cam sprocket, 4" x 12" x 31" FMIC, Paxton AFPR, modified 125 trans/LSD
unit/3.42's, custom chip tuning, Alky Control Methanol injection
13.61 ET at 101.44 mph, 262 WHP/350WTQ
2009 Pontiac Solstice GXP roadster, 2.0 turbo w/GMPP exh, CAI and turbo upgrade, 290 hp/325 ft lbs
1969 Olds 442 convert
400 Eng, 200-4R trans, 3.73 posi, power everything, OAI
Hmm, so I'm screwed if I want to bolt a 5 sp to an auto block, huh?
The more I chew on this, the more I'm leaning towards just leaving it an auto. But half the fun of having a fast little car is to bang throught the gears. I don't care if the final drive ratio isn't the same as stock, I just want to shift gears.
O'well.
