LS1 valve ajustment ???

new to the ls1 motor ! need to know if i can adjust my stock valves ?? in my 98 z28 .. to me it sounds like they need adjusting . :confused:

Valves can't be adjusted. The stock valvetrain is non-adjustable. The head holds the spring seat, the valve seal, the spring, the retainer and then the lock. Mount up the rockers with the pushrods in place, torque 'em down, and that's it. You can use shims and different length pushrods to make adjustments to valvetrain geometry or have a machine shop do some custom work on the heads. But for stock components, that shouldn't be necessary.

He's probably referring to adjusting the rockers to get rid of that clattery "loose/sloppy rocker" noise? ;) You know the one that every LS1 has ever since they're brand new??? :thumb:

Welcome to the LS1!! :D Great motors ... just a little too noisy from more places than just the exhaust?!!? :confused:

He's probably referring to adjusting the rockers to get rid of that clattery "loose/sloppy rocker" noise? ;) You know the one that every LS1 has ever since they're brand new??? :thumb:

Welcome to the LS1!! :D Great motors ... just a little too noisy from more places than just the exhaust?!!? :confused:
Let me guess you still have the tap/knock? I gave up on mine, changed my pushrods, idler pulley, plugs, wires and i have no exhaust leaks i hope it blows up so i can get a new engine :D

I've had mine since BRAND NEW, and it's had those "tap/rattle/knock/clatter" noises since DAY ONE :shrug:. Now with over 105,000 km (~65k miles) and it still runs like a champ, I'm not too concerned about them any more ;).

I've had mine since BRAND NEW, and it's had those "tap/rattle/knock/clatter" noises since DAY ONE :shrug:. Now with over 105,000 km (~65k miles) and it still runs like a champ, I'm not too concerned about them any more ;).

http://www.sdpc2000.com/catalog/120/products/265565/LS7-2006-Corvette-Crate-Engine-70L-427-Cubic-Inch.htm

http://www.sdpc2000.com/catalog/120/products/265565/LS7-2006-Corvette-Crate-Engine-70L-427-Cubic-Inch.htm
A few more grand and i could get me a C5 Z06.

http://www.sdpc2000.com/catalog/120/products/265565/LS7-2006-Corvette-Crate-Engine-70L-427-Cubic-Inch.htm
Why don't YOU get one of those??? ;) I'm not the one lacking power!!! :p

Welcome to the LS1.

Enjoy the noise.

hey guys ,thanks for the 411 ,, i didnt think they were ajustable. guess its roller cam noise .. but then again my cars got 106,000 miles on it two . but other than that it runs like a new one , doesnt burn any oil has good oil pressure . best et with drag radials 8.34 1/8 mile 97.4 mph , spining out the hole .;) does anyone have some suguestions for my car ?? it already got the slp cold air kit , ported tb , polished maf ,free mods . 98 z28 m6 3.42 rear

hey guys ,thanks for the 411 ,, i didnt think they were ajustable. guess its roller cam noise .. but then again my cars got 106,000 miles on it two . but other than that it runs like a new one , doesnt burn any oil has good oil pressure . best et with drag radials 8.34 1/8 mile 97.4 mph , spining out the hole .;) does anyone have some suguestions for my car ?? it already got the slp cold air kit , ported tb , polished maf ,free mods . 98 z28 m6 3.42 rear

Sounds like your car runs real STRONG 2 me.

Headers and catback are good for 30rwhp. ;) If you want to save a couple hundred, a cutout instead of a catback is an alternative option.

best et with drag radials 8.34 1/8 mile 97.4 mph , spining out the hole .;) it already got the slp cold air kit , ported tb , polished maf ,free mods . 98 z28 m6 3.42 rear

Unless you also have a power adder, your car doesn't go 97.4 mph in the 1/8.

Mike

. best et with drag radials 8.34 1/8 mile 97.4 mph , spining out the hole .;)

This must be a typo because I run low 7s in the 1/8 @ 96 mph

Probably supposed to be 87.4?? ;)

just looked at time sheets from 7-10 dragway here are some of my times , 8.615 @ 93.17mph 1/8 mile , 8.71 @92.78 mph,8.862@ 92.98mph . all runs on bf goodwrench drag radials no power adders !! normal run on street tires in the mid to high 9s. no bs !! my car is suppose to be stock , dont know if its had anything done to it before i bought it .

That doesn't make any sense. Your MPH is still too high for a stock car, although the ETs are about right. Maybe the mph at the end of the track was off that night?

just looked at time sheets from 7-10 dragway here are some of my times , 8.615 @ 93.17mph 1/8 mile , 8.71 @92.78 mph,8.862@ 92.98mph . all runs on bf goodwrench drag radials no power adders !! normal run on street tires in the mid to high 9s. no bs !! my car is suppose to be stock , dont know if its had anything done to it before i bought it .

60 foot times?

i dont know it must have been off , im just sayin what the sheets said , not trying to make my car look like a rocket !! it said mph2 does that matter ? hell if i know . guess ill have to go to harrels this weekend and run to see what there lights show ..