mcamarols1

iTrader: (9)

heres the situation, i installed my cam and bout 4000mi later one of the rocker arm bolt broke in the head(i used the a home made spring compressor tool that threads into the rocker bolt hole so i think i weakend them by doing this), so i bought some new heads,2.5 prc, the 243 castings with 2.04 1.575 valves i think, i installed the new heads and this didnt come to my mind till just recently, the pushrods i used are the 7.4 from tsp, are these heads milled at all? should i b using shorter pushrods? and if need shorter ones am i doing any damage to any of my components?

mcamarols1

iTrader: (9)

i got it tuned that way too, should my numbers b higher?

htvette

iTrader: (1)

I have the same h/c setup as yours and made only 422/362 tuned. I am interested to know how much of an increase if these heads are milled about .030.

mcamarols1

iTrader: (9)

back ttt

SSTYCOON

iTrader: (2)

I don't think they are, if so you'll need 7.350. You think they would tell you. I wouldn't worry too much. My LS6 PRC heads, stock valves,a are milled .030, by my request and I used 7.350

htvette

iTrader: (1)

how much compression would that be?

JoeyGC5

iTrader: (24)

My TSP stage 2.5's are milled 0.010" ad I'm using 7.400" pushrods without any issues on a MS4 cam.

mcamarols1

iTrader: (9)

so i should have no worries??

rickyracer25

iTrader: (11)

1st Call Tsp 2nd If I remember correctly the recommned is the 7.350's for those heads if they are milled at .030. But If you are worried pull the valve cover and take all of the rockers off then color the top with a marker and put it all back together. rotate the crankshaft a couple of times and then check to see where the mark is. if it is too far towards the headers then you need shorter p-rods, if it's in the middle then you are ok, and if it is to far on the intake side then they are too short. And here is what I'm talking about.HERE YOU GO

chriswtx

iTrader: (5)

I'm pretty sure TSP only mills them if you ask them to...