BU1000602 1957-1963 Buick 401 Nailhead to Chevy Automatic Transmission 2.90" crank flange

by Buick
$850.00

Materials Included:

(1) Adapter plate - Buick Nailhead to Chevy
(1) Crank Adapter - Inner
(1) Crank Adapter - Outer
(1) Torque converter drive plate
(1) Flexplate - small center
(1) Balance weight for Buick 401/425 to Chevy auto
(6) SHCS 7/16-20 X 3
(4) SHCS 7/16-14 x 1 3/4
(2) SHCS 7/16-14 x 1 1/4
(6) 7/16-20 x 3/4 flexplate bolts
(2) Dowel pin .621 x 1 trapped
(5) HCS 3/8-16 x 1 1/4 

(3) Thick Washer 7/16 Hardened
(3) Flat Washer 7/16 

Are you planning on using a modern a GM 4L60E, 4L65E, and 4L70E (2008 and earlier only) or GM 4L80E and 4L85E transmission with this kit? By adding a US Shift Quick 4 stand-alone transmission controller you will save $100 dollars off of the cost of your Speed Gems adapter kit. 

We have additional options from US Shift. Please give us a call if you're not seeing what you need!

*Matching our adapter kits with your engine can be tricky. If you are unsure of which kit to purchase for your engine, please call customer service at (763) 767-4480. Speed Gems is not responsible for return shipping costs of mismatched kits.

Installation Instructions