blair

iTrader: (1)

i have a 97 z28 lt1 m6 with the stock cam and stock heads. I am looking to upgrade to the lt4 valve springs, 1.6 or 1.7 rockers, and ls7 lifters but i want to know can i use stock length pushrods or do i need a different length?

96capricemgr

iTrader: (1)

With LT4 springs I would not use any more than 1.6 rockers and I would reuse the stock lifters unless you find a problem with them.

The LS7 lifters are a popular replacement because they are a good lifter at a great price, NOT because they are a performance upgrade at least not at the mild level you are looking to play at.

blair

iTrader: (1)

ok thanks for the info what about the pushrod length?

monster81

PR length wont change by going to a higher RR ratio, u can keep ur stock (7.200)PRs

96capricemgr

iTrader: (1)

technically you should be checking PR length but from a practical standpoint the stock 7.200 is extremely likely to be correct.

96Formula6spd

iTrader: (7)

Hey man I have a set of lt-4 springs for sale sent you a pm