American Hot Rod Solutions 4 bolt conversion main caps are manufactured from Ductile Iron. They are designed to convert your Chevy Small Block from the original 2 bolt caps to 4 bolt caps for increased durability in high performance street applications at a lower cost than our billet caps.

Part No.

Application

Description

Price

Cart

Chevy

MBC-350-4B

GM 305/350

Nodular Iron, Straight conversion to 4 bolts .3pcs/set

$17.25