FastNTopless

I have a highly modded 01 TA with LS6 heads (with stock springs and rocker arms) that recently broke a valve spring. I have found that I did not drop the valve associated with the broken spring. I will be pulling my spark plug and using a fiberscope to inspect my valves and combustion chamber. Provided I don't find anything wrong in the cylinder, I will need to change my springs. I have a Comp Cams 54-000-11 custom cam with the following specs: adv dur 289 (intake), 289 (exhaust); dur @ .050 is 239 (int), 239 (exh); lobe separation-111.5; valve lift is .651 (int), .608 (exh). My question is what valve springs do I use? I know I'm going to need an entire kit so I expect to pony up some Benjamins. I am looking at two kits in particular: Comp Cams26926-16 and Lunati 73925k1lun. Both are dual valve kits, but the Lunati is half the price. Am I going to need new push rods or rocker arms? In the past, I have bought H/C combos so I knew that everything was going to work together. I bought this car already built so I am reaping the benefits of a half assed build. Any info will be greatly appreciated!

ls1 1990 VN

use search it will be very informative

BigRich954RR

iTrader: (1)

how many miles on the springs? what rpm are u turning ?

PREDATOR-Z

Comp 926, PRC extreeme duals
If it were me, I would change the cam (wrong for your setup/heads) and run PAC 1518 beehives)

Randy WS6

iTrader: (69)

I run the Livernois Motorsports double valve springs , They fit in the stock seats and are rated @.690 lift. Ive run them for over a year and never had one problem with them, The cam that i run is in my sig below and heres there spring kit http://www.livernoismotorsports.com/...t.phtml?p=1575

Jon@Texas-Speed

iTrader: (18)

Our .675" springs would do fine with that. Complete kit will run you $349.99.

Jon

Damian

iTrader: (89)

What this dude said.

PRC makes a damn good double spring though.

FastNTopless

I know I should change my cam, but I don't have the time or money to do so. I bought the car the way that it is so I have no idea how long the current valve springs have been in it. I do know that they are not sufficient for the amount of lift I have on the cam. Will new springs change the geometry where I would need new rockers and pushrods? I shift at about 6600 RPMs with WOT and about 3000 RPMs during daily driving (majority of the time).

theevette

iTrader: (2)

Comp 921 suppose to be best. Found set for 498 on eBay complete

soundengineer

iTrader: (16)

Manley Duals good to .700
I got mine through Allan Futral
I got the spring locators for the larger size valve guides..so that # may need to change to fit if you have a standard LS1 size valve guide

MAN-221435-16 Manley Performance Nextex Valve Springs 1.340
MAN-23611-16 Manley Performance Titanium Retainers 1.340" 7 Deg +.050 LS1
MAN-42135-16 Manley Performance Spring Locators Cup OD 1.320",Cup ID .567"
MAN-13098-16 Manley Performance Machined Valve Locks, 7 degree, 5/16" Bead Loc
(LS1 applications)

99Bluz28

iTrader: (35)

PAC 1521's, up to .700" lift.

highgear

I would call the cam co (Comp) and run whatever they recommend.