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#1
08-11-2012, 05:40 PM
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Drivetrain advice needed
After thoughts of a BBC or an LS3 swap in my 78 . I have decided to rebuild my older 400Pontiac engine. I spoke to the builder and he recommended a stroker kit and aluminum heads. Should be about 525HP.
So what have you used for transmissions in this example? Converter advice would be helpful also. I was thinking 3:73 gears. Any advice would be helpful. Thanks in advance. Mike
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1967 400 Firebird Convertible  : 1978 Firebird Esprit  1980 Trans Am Pace Car (SOLD)  2002 RamAir Convertible 
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#2
08-11-2012, 08:50 PM
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I'm using a Phoenix Trans. TH 350 and making 550 hp and a Continental "Jim Hand" 10" convertor. Mine was a hair tighter than I would have liked but close enough.
3.73s are going to be a bit much if you do any highway weven with tall tires. 3.42s are pretty good all around.
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune [email protected] 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs 1964 Corvette Coupe 327 4 speed |
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