Gary
I've been running a variant of the 904 behind my 401-powered '70 Javelin for about 8 years, running 13.18's with poor traction. I also have one in my 401-powered Matador Coupe. Both trannies are the 998, which is a little beefier than a standard 904. I also ran a 360 in my '80 Spirit using the stock 904 trans with lockup. I have used large trans coolers with all three cars. The lockup really needs one to survive as the lockup converter will lock up idling in gear if it gets too hot. No problems at all. I also used a B&M Shift Kit in all of these trannies.
Good luck!
Bill Dettman
'70 Javelin BBG 401, '74 Matador X 401
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Subject: 904 vs 727
Date: Fri, 18 Mar 2005 06:03:48 -0500
Well it's time for me to address the tranny issue in my 73 AMX w/401. I have
heard some negatives on the 727, i.e. heavy, rotating mass etc. The tranny I
choose will be reworked a bit to handle some extra horsepower. I thought
about the full manual valve body, but this will be an occasionally street
driven car with a handful of weekends up at Lebanon Valley Drag. Can the 904
be built up to handle the approx. 375 horsepower the builder is predicting?
Any tips would be greatly appreciated.
Gary N
'73 AMX 401
'73 AMX 401 Pierre Cardin
'69 Hurst SC/Rambler
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