Upgrade your 3800 Non-Supercharged to a Supercharged 3800 without having to do an engine swap with this 'Top Swap' kit. This kit includes everything to swap over the topend from the L67 along with the other necessary parts including gaskets to basically turn your L36 into an L67 engine. Keep in mind you will be retaining the standard 9.4:1 compression of the non-supercharged and not the 8.5:1 compression of the supercharged powerplant. This means you won't want to go as radical with pulley choice, but you will be able to make more power with less boost.

Here is the list of what exactly is included in this kit so you can see that this is in fact the cheapest Top Swap available out there. If you find a cheaper one out there, we will match it - parts for parts and price for price.

This is a reprint of a parts book that GM dealers would have used to order parts: it shows which Buick. 1934-1935 Buick Series 40. Parts Interchange Manual.