LS1C5Vette

iTrader: (11)

Which would be better WITHOUT having to do any flycutting, I will be going with a TSP 233/239 cam, help me out.

Bigchickenhawk

iTrader: (3)

that cam is fairly large.....I am about 99% sure you are safe w/ the stage 1 Ls6 heads. I would say thats gonna be real close on the truck heads, probably would want to flycut to be on the safe side.

2001bluerata

iTrader: (2)

Not 100% sure but I think TSP sinks the valve so you can run those 5.3 stg 2.5s w/o flycutting. Maybe someone who knows will chime in!

m6speed

iTrader: (11)

why not just call TSP and ask them if their heads will work with their cam.

PREDATOR-Z

I would choose the 243s stage 1

brad8266

iTrader: (23)

the 243's are juts a better base cast to start off with.

chuckyt1

iTrader: (33)

Send a note to Jason at TSP. Very helpful... The 243's will have better PTV clearance.

regorih383

iTrader: (21)

True!

regorih383

iTrader: (21)

I been thinking just like you and I did call TSP and they said if you want to run the truck heads you have to flycut the pistons becasue the truck heads have a smaller CC and have bigger valves than the LS6 heads. The LS6 heads would be the safest route if you want that cam , other than that the truck heads are a better head than the LS6 heads becasuse they give you more compression 10:75:1 , have bigger valves and flow a better.