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th400 convertor suggestions

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jpwalt1987

Well-Known Member
Joined
Nov 9, 2003
Messages
1,885
I am finally getting around to figuring this car out after getting the engine fixed at DLS. I stall tested my convertor thats in my th400 and it goes to 2700rpm at zero boost and 3000 rpm at 3psi. I havent really leaned on this combo since getting it back either. Here are the specs:
235 cid 109 block
ported GN1 heads (249cfm/200cfm)
8.6:1 compression
218/218 hyd roller DLS cam
PTE front mount
Old school PT70 with .63 a/r
and supporting stuff too.
The convertor is an ATI unit that stalled 3200 behind a 274ci motor and 76 turbo.
Not sure if I should get it restalled or just get a new unit all together. I have a transbrake, so spooling at the track should be no problem but it is a turd on the street. I am going to get it from PTC but am unsure on what it should stall and how it will act. thanks for any suggestions.
 
The ATI could be restalled a little higher if you wanted to use it. But I can't say how well it will work without looking at it internally. I'm guessing it's a 9" so it won't couple as well as my 9.5 unless your turning over 6500 rpm.

What et goal do you have in mind?

If you decided to buy one of my PTC 9.5's it would start building boost around 3000-3200 rpm. Final stall will be determined according to your e.t goals and shift rpm. If a combination won't be maxed out and/or shifts higher than 6000 rpm I can raise the stall to make spooling easier. If a combination will be pushed or shifted lower than 6k I have to keep it on the tighter side so it couples well.
 
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