| | | quote | Originally posted by nosrac:
according to ebay the stock Fiero TC will work on a 4t65eHD. However, I am looking for a higher stall converter for my swap.
I wouldn't mind a ZZP 3000+ stall unit but would rather NOT have to change flex plate to accomodate the smaller 245 unit and don't want to pay more than $150 for one.
Any suggestions on a TC from a production car that would allow an actual 2500rpm+ stall? The zzp 245 unit actually stalls at 2600rpm in a Fiero. |
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DO NOT attempt to use a stock Fiero torque converter in a 4T65-E trans. The ECCC (TCC constant slip) strategy the PCM uses in these transmissions will quickly burn up the lockup clutch in the Fiero's torque converter; because it was never designed to be constantly slipped. Basically I would recommend you stick to using any torque converter that came stock on a 4T65-E. This does give you options.
A torque converter that was made for 3100 or 3400 V6 4T65-E applications would definitely have a higher stall speed (aka: K-factor) than one made for a 3800SC. If you look at the transmission ID application charts on my website for 4T65-E transmissions, K-factor is listed in most of them. I think the higher the K-factor number, the higher the stall speed. Torque converter 4-letter ID codes are also on those charts so you can use them to rummage thru what's available at your local junkyard to find the torque converter you want.
You can elongate the TC mounting holes in the flexplate on-engine using a dremel with a metal grinding bit or you can remove the flexplate from the engine and redrill the holes using a flexplate with the smaller pattern to mark the new holes. Keep in mind if you remove the flexplate, you'll need to replace the flexplate to crankshaft bolts since the factory GM bolts for this are 1-time use only. DO NOT attempt to reuse these bolts. New GM bolts get torqued to 11 ft/lbs + 50 deg turn.
-ryan
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