C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

87 transmission swap

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Old Dec 17, 2007 | 09:08 AM
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Russ Dreikorn
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Default 87 transmission swap

Will the zf 6 speed from the later C4 drop in a 87? I have an auto and wish to change to a std. Will the bellhousing for the zf mate up with the early L98? or do I need a bell housing for a 4-3 which came stock in the car? Is the drive shaft different for the ZF?
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Old Dec 17, 2007 | 10:32 AM
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Yes. Search for CentralCoaster. He has all of this documented.
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Old Dec 17, 2007 | 02:56 PM
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check out this thread, lots of great information on available swaps for early C4's

http://forums.corvetteforum.com/show....php?t=1662863
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Old Dec 17, 2007 | 03:30 PM
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From: San Diego , CA Double Yellow DirtBags 1985..Z51..6-speed
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No that thread pretty much turned into a T5 swap thread.

If you're considering ZF try this thread:

http://forums.corvetteforum.com/show....php?t=1805179

Cost of my swap was ~$1600, but I later did gears too, for another $400.

Your other options are:

TKO (classicchevy5speed or keisler)
T5 (work in progress by anesthes)
Richmond 6-speed ()
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Old Dec 17, 2007 | 08:54 PM
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I converted my '87 to ZF and have done several other Auto to ZF conversions. Either ZF trans (blue or black tag) will bolt in the early C4. Requires bellhousing (bolts right up to all L98 blocks), driveshaft, ladder and most all other parts from a ZF equipped car. Including positive battery cable, starter, dust shield, trans tunnel hump, etc.

At that point, you may be better off just buying a ZF vette. It is quite a bit of work.
Aaron
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