4-Speed Shifter Distance
- Thread starter rjleiker
- Start date
A WCT5 would be fine behind a stock-ish base Goodwrench motor like you have as long as you don't run slicks and DO use your clutch. I have the same Goodwrench motor in front of a WCT5 and so do many others in the 300-350hp range. As long as you follow the two rules above, it will last and you don't have to drive like a Grandma either 
As mentioned, a T56 is of course much stronger/better, but I took the first thing to come up as finding a trans locally wasn't easy. Budget will also play a role as a T56 swap will cost you a fair amount more, especially if you have a 2pc rear main block like the Goodwrench (flywheel is $400+). The speedo adapter ~$250 and is another additional expense. A T56 is typically in the $1000 range, whereas a WCT5 is $500 or less, so overall expect to spend an additional $1000 or more for a T56 swap if you have a 2pc rear main block. I have since purchased a T56 and all the neccessary parts (except the driveshaft), however I'm not going to bother upgrading until the motor warrants it. If you plan on motor upgrades soon, may as well do it right the first time if you can get your hands on a T56.
As mentioned, a T56 is of course much stronger/better, but I took the first thing to come up as finding a trans locally wasn't easy. Budget will also play a role as a T56 swap will cost you a fair amount more, especially if you have a 2pc rear main block like the Goodwrench (flywheel is $400+). The speedo adapter ~$250 and is another additional expense. A T56 is typically in the $1000 range, whereas a WCT5 is $500 or less, so overall expect to spend an additional $1000 or more for a T56 swap if you have a 2pc rear main block. I have since purchased a T56 and all the neccessary parts (except the driveshaft), however I'm not going to bother upgrading until the motor warrants it. If you plan on motor upgrades soon, may as well do it right the first time if you can get your hands on a T56.
Doober said:
T56's only came on 1pc rear main seal blocks - there are only a couple aftermarket suppliers of a "custom/special" T56 flywheel for a 2pc rear main seal block and they are $400+. I tracked one down for $200-250 - second hand, but never used.
What's so special? I would think a standard flywheel would be ok... is this for use with the T56 bellhousing?
A standard 2pc rms sbc flywheel won't work. The T56 used a completely different pull type clutch assembly with a specific flywheel that is much thicker.
This thread has pictures for reference:
http://www.thirdgen.org/techboard/engine-drivetrain-suspension-parts/539600-fs-centerforce-700107-flywheel.html
The 1pc rms flywheel that a T56 uses is specific to that trans as well (you can't use a standard 1pc rms flywheel).
This thread has pictures for reference:
http://www.thirdgen.org/techboard/engine-drivetrain-suspension-parts/539600-fs-centerforce-700107-flywheel.html
The 1pc rms flywheel that a T56 uses is specific to that trans as well (you can't use a standard 1pc rms flywheel).
I had a feeling that was the case. Personally I'd just use a T56 with an LS1 input shaft, standard 26-spline clutch and an adapter plate, then you could use the stock G-Body linkage.
If you can't find a used flywheel, that will save you a bit as the adapter plates are "only" around $200 IIRC. You can also use an '84-92 F-body bellhousing with the adapter if you want a hydraulic clutch. I believe you'll also need an extended pilot bushing/bearing as well if you go this route (one of the many I looked into LOL)
The one I looked at was from a company in MI, and from what I understood a standard pilot could be used with the LS1 input shaft.
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