GMC Transmission Adapters — Speed Gems

GMC

GM101 GMC STRAIGHT-6 (1939-62) TO CHEVY V8 AUTOMATIC TRANSMISSION
from $1,100.00

GM101 GMC STRAIGHT-6 (1939-62) TO CHEVY V8 AUTOMATIC TRANSMISSION

Speed Gems

Please specify the year and displacement of your engine, and whether the crankshaft bolts are 7/16” or ½”. We will need this information to get you...

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from $1,100.00
GM201 GMC 305/351/379 V6 TO CHEVY V8 AUTOMATIC TRANSMISSION
from $1,450.00

GM201 GMC 305/351/379 V6 TO CHEVY V8 AUTOMATIC TRANSMISSION

Speed Gems

We’re proud to continue offering these specialized kits, though availability may occasionally be limited due to lower demand.  Please allow 4–8 wee...

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from $1,450.00
GM301 GMC 702 V12 TO CHEVY V8 AUTOMATIC TRANSMISSION
from $1,650.00

GM301 GMC 702 V12 TO CHEVY V8 AUTOMATIC TRANSMISSION

Speed Gems

We’re proud to continue offering these specialized kits, though availability may occasionally be limited due to lower demand.  Please allow 4–8 we...

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from $1,650.00
GM401  GM 3800 Series V6 Engine to Chevy Automatic V8 Transmission
from $925.00

GM401 GM 3800 Series V6 Engine to Chevy Automatic V8 Transmission

Speed Gems

We’re proud to continue offering these specialized kits, though availability may occasionally be limited due to lower demand.  Please allow 4–8 wee...

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from $925.00
Speedometer Cable  (#SC10001)
$49.99

Speedometer Cable (#SC10001)

Speed Gems

This cable has the standard GM thread on the one end and 1950's era thread, that was common on all car lines, on the other. Example: Putting a 700R...

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$49.99