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Well I found my weak link monday. Took the 53 for a hard ride and craped the tranny. The guy that rebuilt it said it would hold over 400hp. He didn't say how much over:CRY: I spent 4 hours yesterday changing it I put in a spare off the shelf but I will take it easy on this one. Just wondering if I should go through the broken one or build a 400???
Refresh my memory, what was the tranny that blew?
OOPS! TH350 with a shift kit. I don't know what all he did to it, but I haven't been easy on it. :HMMM: It no longer has 3rd gear, and made a lot of scraping noise. :eek: At least it got me home with out the aid of a tow:whacked: .
And Thanks to whom ever moved this post. The old dog has to learn.
I ran a '73 Monte Carlo with a 400 hp 350 +.060 with a stock TH350 and a shift kit. Never had a problem with the trans. Blew up the 10 bolt rear once though. I did not run an external cooler but I did use a 4 core radiator. Make sure it is running at normal temperatures (~185-190F). The TH400 has higher internal losses than the TH350.
Kitz
I actualy figured the drive shaft or U joint would let go first. The rear is a Ford 9" 4/10 Detroit Locker. Tires 17.5x32x15. I think I'll just have him go through it and put in the H/D stuff. I am not a auto trans guy to me they are just a component that is a shelf item.
Charlie, check this one out. He rates it to 500 hp.
Don
http://cgi.ebay.com/ebaymotors/TURBO...09245904QQrdZ1