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Old 12-21-2003, 07:26 PM   #1 (permalink)
cutlass72
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Join Date: Dec 2003
Location: Morton PA
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I have a 72 cutlass with a 350 rocket, th350 trans, and a 10 bolt rear. My friend is getting rid of his th400 trans from his 69 firebird, I was wondering if it is possible to use his trans in my car. What's involed with the swap, I know it would probably need a new driveshaft but what else is involved? Thanks
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Old 01-02-2004, 05:26 PM   #2 (permalink)
70ragtop
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Location: Dallas, Texas
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I am going to assume that the Firebird has a Pontiac motor and the trans in question uses the BOP (Buick-Olds-Pontiac) bell housing pattern. This being the case, the 400 is longer than the 350 meaning a shorter drive shaft. The mounting point to the rear is also farther back, but the crossmember in the Olds is adjustible and can be moved back. The bigest problem I see is the 350 trans uses a cable to kick the trans into passing gear and the 400 is electronic using a switch mounted on the gas pedal. If you can locate a switch and mounting bracket from a big block car (or perhaps your frind will throw in the switch from his Firebird) your in business.
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70 Cutlass Supreme Convertible
68 Cutlass S Convertible
72 Cutlass Supreme Hardtop
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