Press In Stud Conversion Service, to 7/16 Screw In Studs, Pontiac Cast Iron Heads, Set/2 1100H-STUD-CONV
Customer supplied heads sent to us for machining services
Convert press in studs to Pontiac 7/16 screw in studs
This conversion service is for converting press in studs to 7/16 screw in studs. The press in studs are much weaker than the screw in and can be pulled out when running a performance cam. Previously the only option was to pull studs and tap to 1/2" and use an aftermarket 1/2" stud that had to be cut down due to excessive length. Now we can perform the services so your heads have stronger factory style screw in studs.
Steps for the conversion
We clean heads and pull existing studs if needed
Our CNC program will precisely measure the exact stud location
It will mill the boss height when needed for use with or without guide plates on 389/421 heads
The boss is milled lower to accommodate the screw in 7/16 stud with the hex bottom.
The hole is enlarged by precisely boring it to the proper size
It is then thread milled
Helicoil inserts are installed that accepts the 7/16 screw in stud
For 67 and later/ 14 degree heads you can use stock guide plates or CCA-4851-8
If you need other head services or parts contact us after ordering and we will be glad to get you a full quote before shipping to us.
We can even arrange to ship your heads Butler for the CNC Head Porting Services.
Choose one of the options for shipping to us.
Return shipping will be automatically calculated at checkout. Shipping option to us is only for Cont. US only
Heads will be inspected and we will contact you if any optional services are recommended
- Item Requires Shipping
- 125.0 lbs.
- This item ships in its own box.
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