1990 turbo w/3t40-is there a 4spd auto to fit this - Transmission Forum

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1990 turbo w/3t40-is there a 4spd auto to fit this
Sunday, February 18, 2007 8:11 PM
I have a 1990 LE conv w/turbo 2.0L eng. and auto trans,,is there a 4 spd OD automatic trans that will fit my car.I`m tired of this 3 spd trans.it runs at 3500 RPM on hiways,I would like to run it 2500 RPM hiways.I know the auto trans eng takes a different bolt pattern than the std shift ones,or I would think bout going to a 5spd std shift,,this trans is a strong unit,just no legs----Jack

Re: 1990 turbo w/3t40-is there a 4spd auto to fit this
Tuesday, February 20, 2007 10:46 AM
No.

The OHC pontiac 1.8 and 2.0 use a trans bolt pattern that is unigue to only those engines.


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Re: 1990 turbo w/3t40-is there a 4spd auto to fit this
Tuesday, February 20, 2007 12:11 PM
I never heard that the 1.8 and 2.0 had 2 different bolt patterns, between auto and manual...... I did know that they had their own bolt pattern (like the quads have their own).......






SPD RCR Z - '02 Z24 420whp
SLO GOAT - '04 GTO 305whp
W41 BOI - '78 Buick Opel Isuzu W41 Swap

Re: 1990 turbo w/3t40-is there a 4spd auto to fit this
Tuesday, February 20, 2007 4:36 PM
SpeedRacerZ wrote:I never heard that the 1.8 and 2.0 had 2 different bolt patterns, between auto and manual...... I did know that they had their own bolt pattern (like the quads have their own).......



Further explanation... there never was a 4spd auto for his engine and no other engine's trans will bolt up.


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Re: 1990 turbo w/3t40-is there a 4spd auto to fit this
Wednesday, February 21, 2007 6:14 PM
Thanks for the reply,or mabe I should say,the bad news.I replaced the torque convertor solinoid yesterday,and that helped out some,but still,3000 rpm at 75 mph is still awfully high,but I`ll just live with it---thanks,,,Jack--------when I got the long block from a rebuilder,he asked if was a stick shift or a n automatic,he said the stick has one more bolt in the block than the automatic does.


1990 sunbird LE conv w/turbo 2.0L----new eng,turbo,injectors
1984 buick t-type 3.8L turbo v6--fast!
1940 olds sedan street rod
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