Mike@ZMS

iTrader: (10)

Im going for the stock/sleeper route... I want to make as much power as possible on a non-header car w/out N2O.

Im thinking about swapping in a set of the new yella terra 1.8 rockers, with some new springs. Wondering though, what kind of performance gains I could expect.

Mods on the car currently are K&N, SLP lid, 85mm MAF, Ported TB, SVO 30#, magnaflow muffler. Car made 340rwhp/360rwtq on the lid and K&N alone, so its a runner for sure.

Thanks for the input!

bluehawk2

iTrader: (74)

I would think that you would be better off getting a cam and some valve springs. You could get a smaller cam and have it tuned so that you couldn't notice that you had a cam. JMO

Mike@ZMS

iTrader: (10)

I agree, but a custom sleeper grind is a ways off, and I dont really feel like pulling the front of the motor off and replacing all the parts that are a good idea to replace (timing set, oil-pump, pushrods, etc.)

Just wondering what kind of gains I could look forward to with the addition of only a set of rockers and springs.

Thanks!

bluehawk2

iTrader: (74)

https://ls1tech.com/forums/showthrea...+gains+rockers

Check this thread out.

bluehawk2

iTrader: (74)

https://ls1tech.com/forums/showthrea...+gains+rockers

This one also........just do a search for 1.8 rockers.

JPH

iTrader: (2)

Crane 1.8 quick lifts rockers will fit your need, but you must add dual valve springs along with it, or else spring harmonics will come into play after 5700k+. Expect 10+rwhp, 10+rwtq gain,(cars vary) along with quieter valvertrain and lighting fast throttle response.

vettenuts

iTrader: (4)

Note, I believe this thread pre-dates the introduction of the Crane rockers.