Pay in 4 interest-free payments of $12.80 Learn more
Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
solid steel construction
Convert any one-piece GM TH400 case into a two-piece case with our Speedmaster TH400 case adapter
This cooler air charge provides additional power and torque
Fits big block Chevy rectangular port cylinder heads on standard deck blocks
and flame ball-milled finishes
Chevy BBC 454 2.250" +250 11/32" Stainless Steel Intake Valves solid steel constructionWhen it's time for valves, don't cut corners. Get genuine Speedmaster stainless steel valves. They're made from a tough, stainless steel alloy and are carefully designed to increase gas flow for more power. What's more, they have hardened stem tips for durability and are swirl polished.
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