LSXS10

iTrader: (37)

Ok guys, im looking for parts to dress my l92s Rockers, valves, .650 lift springs with tit. retainers. I have heard the s.s. valves are to heavy for high rpm but its kinda budget so i cant do titanium. This is a 370 n2o motor that will see about 7000 rpm and i dont want a valve float issue. Sponsors, if you have what i need please reply or PM me... Thanks for any and all help...

fast98

iTrader: (16)

I have a brand new set of gm valves and a brand new set of rockers with stands I could do $350 plus shipping

LSXS10

iTrader: (37)

Would the stock valves hold up in my app. do you have all the rockers and stands???

RoDan

I spin 7000 with the stainless valves, the springs are Livernois duals. They are good to .690 lift. 150# seat pressure or so. No valve flaot here so far so good. Thats with GM rockers, comp .080 wall chromemoly pushrods and caddy lifters.

WKMCD

iTrader: (2)

I'm running stock valves with Comp 921's, Trend .110 push rods and YT Ultralight rockers all setup properly. My valve train is extremely stable. Since your going to juice it you'd want the stainless valves but they are heavier.

I'm getting ready to try another cam with a LOT of lift and I'll stick with stock valves but going with PAC 1521 springs - again all setup properly. PAC 1521's a nitrited and good for .700 lift.

My $.02

LSXS10

iTrader: (37)

This is close to what im lookin for , would you run the comps, not the "R" lifters or go with the gm ls7 or caddys. and who has a better price on a spring kit the comps are BAD pricey. im interested in the pac's, livernois, and patriot springs, just need a reliable valvetrain....

WKMCD

iTrader: (2)

The PAC 1521s' are a little more expensive than the Comp 921's but a better spring. I certainly wouldn't run anything less than 921's on my car..

88ls1blazer

iTrader: (1)

I have used the livernois ones.

They are a great spring, even w/ heavy valves

LSXS10

iTrader: (37)

Would you run the livernoid kit with the steel retainers????Like i said it on a budget to finish this motor...But if i need tit. with the heavy intake valve that is what i will have to do. The valves will be manley 2.165/1.60 , Stock rockers for now. and prob ls7 lifters or the regular comps.

88ls1blazer

iTrader: (1)

Nope, go titanium. Their kit is only around 350 IIRC, complete

Jason 98 TA

iTrader: (4)

We've done the Hollow stem valves with pretty good success at 200hp shots, but your starting to get in uncharted territory past that point. How much gas are you going to run? For that rpm & lift you really need a good spring & less valve weight...

LSXS10

iTrader: (37)

I dont want to spin it over 7000 or so and it will see 200-400 of n2o will the hollow stems handle that much? Im thinking i may have to put "too much" spring on it to handle the s.s. valve. In a perfect world i would go tit. intake and inconel exh. but my bankroll is far from perfect What would control the s.s. intake @.620 lift and 7000 rpm?, maybe a good dual spring and tit. retainer? Most of the problem is bouncing off the seat at high rpm correct? Just wondreing if i did a spring that was 160+ on the seat if it would keep it closed instead of a bounce....Then its back to the ??? , will a stock rocker live with that kind of spring press. on the open end of things or should i go for the yella terras? This is starting to be a headache....im not going to buy anything till i nail down some compatable parts....

99blancoSS

iTrader: (115)

That inconel exhaust valve is extremely heavy.

LSXS10

iTrader: (37)

Would the AFR 8019 springs and tit. retainers work with the s.s. valves in my combo? They are 155 @1.800......

99blancoSS

iTrader: (115)

I would give Mamo a call. I was actually talking to him last week about his springs, they are proprietary and they are proud of them for a reason. He can help you with your valve decision as well, tell him I sent you.

SS Enforcer

I have ss valves in mine with stock rockers, patriot duel gold springs, moly rods and caddy lifters and rev it to 7000 rpm. It has seen 7200 a few times by accident without issue.

cheers

Flipper_1938

Are the "heavy SS valves" really any heavier than a typical BBC chevy valve?


edit: according to the Manley online catalog ....BBC valves are "way the f*ck" heavier. Some are well over 150 grams.

If they can be easily controlled with huge cams, The L92 should be a cakewalk.

black01_WS6

iTrader: (13)

how much more are the Ti. valves?

I to am building a 370 with a 200-300 shot.

LSXS10

iTrader: (37)

I dont know on the tit. valves ..Im going to call del west and some other places to see what i can come up with...

LSXS10

iTrader: (37)

Yes they are and you can run a hell of alot bigger "diameter" spring on it also.. dont have it that easy here....