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Program Engineering Pontiac 350-389-400 Center Main Caps Billet Steel Main Caps, Splayed Outer Bolts PRO-P400C4A

PRO-P400C4A
Pontiac 350 / 389 / 400 Billet Main Caps w/ Splayed Outer Bolt Holes- Includes Dowel Pins & 7/16 Outer Bolts (Set)
*BLOCK MUST BE ALIGN BORED* *REQUIRES ARP 2-BOLT MAIN STUDS
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Description

ARP Main Stud Kit Recommended- Part# ARP-194-5401 or OPT-194-5401

ALL aftermarket billet main caps require line boring and require the thrust surface to be machined to match your particular block

***May Require Oil Pan that will accept a External Oil Dipstick. The Stock Tube must be extensively modified to be used.*** 

Butler Tech Library
Identify Your Pontiac Block Before You Build
Casting numbers tell you what you're starting with, main caps tell you which dipstick setup you have, and the fitment chart tells you what will drop into your car.
Read the Casting Guide ›

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  • 18.0 lbs.

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