I put a VCM performance Camshaft in my Caprice L98 6L engine about 12 months ago but decided to do some mods to the heads about 2 months ago.

im not a mechanic but know enough about the LS engine to do things myself so stripped it down and got some new bits n pieces, some heat paint and put it back together.

I have cast 5364, L92 heads so i sent them to the cylinder head shop. Had them reconditioned, plunge cut, 3 angle valve job, hand blending into the bowls with larger Pep Pro stainless valves fitted. They flowed 350cfm @ .600 lift on the intake.

camshaft specs are 228/238, 0.600/0.603 lift 113 lsa

Upgrades done include pac 1219 springs, factory rockers with VCM trunnion upgrade, VCM pushrods, clevite lifters, powerbond 25% UD harmonic balancer, 1 7/8" 4 into 1 tuned length headers, twin 3 inch exhaust, Asa fuel rails, VCM over radiator intake.

Will need to touch up the tune as not to run it lean but all is running great.

(6l80e trans and 3.7 diff gears)

Also fitted new water pump, new bolts, new gaskets, etc

painted coils and intake manifold

Dyoned 410rwhp with cam so will see what difference the heads make.

 

the factory 6.0 and 6.3 square port heads generally flow quite well stock. exhaust flow improvements yield better results than modifying the intake side.

400rwhp through auto isn't bad at all.

that's a decent cam for a stock converter, are you going to fit a high stall?

 

Are the intake valves hollow stem?

 

I like that color. Just out of curiosity, why do so many Australian cars sit lower in the back than the front?

 

Looking at the pic, it looks like the car is parked on a bit of an upslope. The gap between rocker and ground looks pretty even to me

 

The valves are Pep-Pro elite series stainless

The “Elite” valve range is race specific, designed and manufactured to withstand the extreme operating temperatures and stresses in full race applications.

These Elite Series valves evolved from extensive research and development in the USA Cart Series. They are aimed directly at the serious engine builder who is prepared to pay a little more for these race tested valves.

 

Car runs 6l80e trans with 3000rpm hi stall converter. 3.7 diff gears (lsd).

dyno tune is on Tuesday so will post results

https://youtu.be/d2NWqokgs7I

 

correct. Its on a slope.

 

So you don't know exactly then? It would be a good thing to know they ARE hollow stem.