Advanced Induction Cylinder Head Development
Ai GM LT4 Performance Rebuild Package

Our Performance Rebuild suite of inspection and machine work is a great option for the value minded.  If you are building a budget 400hp+ setup, it is difficult to beat the value of bringing the factory head back into better than new condition.  Our precision valve grinding and CNC'd valve jobs are a great way to pick up some power and ensure your heads are ready to go for tens of thousands of miles.

Machining & Labor:
  • 100% CNC Professional Competition Quality Valvejob
  • Precision Grind & Back Cut OEM 2.00" & 1.55" Valves
  • PCD milled to ensure flatness, surface finish, & achieve desired chamber volume (52 - 57 cc)
  • Professionally assembled for your specific intended use, camshaft, & valve train setup
Cost: $595 for the labor & machine work listed above applied to your GM LT castings

Labor and Component Options:
Install K-Line Bronze Guide Liners & hone to ideal clearances - Cost: +$125
Ai .625" lift capable PSI beehive spring kit w/ CompCams locators/locks/retainers & viton seals - Cost: +$325
Ai 2.00" Int & 1.56" Exh Custom Stainless valves for SR or high EGT applications - Cost: +$215
PSI .700"+ solid roller dual springs w/ Xceldyne Ti-17 Retainers & locks - Cost: +$695

Add an Ai Billet Core Custom grind camshaft for $395 when bought w/ head work!

Recommended Usage: Stock 350 cid - 396 cid short blocks with piston relief/dish volumes of 5-16 cc.