View Full Version : Building my top end need help

07-09-2011, 01:36 AM
Hi guys i want to do a heads and cam package for my 99 m6 ss. I have 243 heads with yellow springs which i want to get ported but dont know to what..... i am going to get a VRX5 cam,The specs are 236/238 with .601/.605 lift on a 113 LSA... i dont drive the car every day it is my second driver, what do you guys recommend.... what other parts do i need?

07-09-2011, 01:42 AM
U will need new hardened push rods and roller lifters for sure and headers and a ls6 in take for sure to help cam breath custom tune as well air fuel ratio if possible

07-09-2011, 09:17 AM
I already have headers, a ls6 intake on the car and of course after the install a custom tune at lashway

raymond mckinney
07-09-2011, 12:36 PM
I would send your 243's off to AI to be ported, have a valve job and milled alittle. You will need hardened pushrods, also if your car has higher mileage i would get some Ls7 lifters to be safe. I would get some injectors and a racetronix 255lph fuel pump while your at it.