1sicss

iTrader: (3)

I am swapping heads for ported 799's and need to know what head gaskets is everybody using, if I have a stock bottom end ls1 except the cam. Also should I replace the lifter trays if the motor has a 110,000miles on the clock. Also are the bolts on the intake manifold stretch bolts and should I get those new as well?

Ronny_02_WS6

iTrader: (6)

It depends if the heads are milled and what cam do you have but cometic are very popular ones.

1sicss

iTrader: (3)

they will be milled between .015-.020 more than likely .015 and I have the TSP Torquer II cam 232/234 .595/.598

Ronny_02_WS6

iTrader: (6)

More likely a .45 or .50 cometic mls 3.910 bore should be good, you don't wanna go lower than that cause the clearance. You can also call TSP to see what they say cause that's their cam.

wildcamaro

iTrader: (15)

If super high compression isn't neccesary then I would go with GM mls head gasket, they r quality gaskets...but if you want all out compression I'd use the cometic, they are basically double the price of the GM ones...as long as you dont use the crappy graphite ones you will be good...also I wouldn't worry about wasting money on lifter trays since you are swapping heads anyway, I would only get new ones if you plan on. Hanging the cam once the heads are on

1sicss

iTrader: (3)

I'm lost about the trays someone explain.

baxsom

iTrader: (6)

When people swap heads they normally replace the lifters and trays with the newer version. Apparently older style trays had an issue with the lifter twisting if I remember correctly inside the tray. since you must take the head off to get to a lifter anyway during the head swap it is a good idea to go ahead and put in new lifters. The LS7 lifter and LS2 lifter tray are the standard that everyone uses. trays are like 8 bucks each.

1sicss

iTrader: (3)

cool, will call tsp just to be sure as to what head gaskets to run. once again thanks