1FSTLS1

iTrader: (9)

I was thinking about going with the Patriot Gold springs because I have read they are good. With this cam and stock heads what springs would you guys recommend.

Serial # M 0607-07 Spec Card# 13018807
Part # 54-000-11 CAMSHAFT, LS1 CHEVY LS1/GEN III '97-UP
Core C54-11AA CAMSHAFT BLANK, LS1 1997 UP 5.7 CORVETTE
Grind # LS1 3727R/ 3729R HR14
DURATION @ .050 INTAKE 234 ROCKER ARM RATIO
VALVE ADJ INTAKE .000 DURATION @ .050 EXHAUST 238 INTAKE 1.70
VALVE ADJ EXHAUST .000 LOBE LIFT INTAKE .3520 EXHAUST 1.70
VALVE LIFT INTAKE .598 LOBE LIFT EXHAUST .3560
VALVE LIFT EXHAUST .605 LOBE SEPARATION 114.0
DURATION .006 INTAKE C/L 112.0
TAPPET LIFT INTAKE 283 CAM ADVANCE 0
TAPPET LIFT EXHAUST 287 HYDRAULIC Y
VALVE TIMING .050 OVERHEAD CAM N
VALVE OPEN INTAKE 5 JOURNAL DIAMETER STD 2.165
VALVE OPEN EXHAUST 55 RECOMMENDED VALVE SPRINGS
VALVE CLOSED INTAKE 49 DEPARTMENT P
VALVE CLOSED EXHAUST 3 SPC INSTR FOR CUSTOMER

TORCHD 02 TA

iTrader: (39)

Anything close to .600 in lift you should run a dual valve spring... I have .588-.595 and am running PRC dual valve springs..

01ssreda4

iTrader: (96)

Lunati Dual Golds here Nothing wrong with Patriots or PRC either. Comps are on the pricey end at around $500 for their 921s. If you wanted to run a single spring then the PAC 1518 would be good.

masterz28

iTrader: (8)

I bought the Patriots, heard some good stuff about them.

TurboBuick6

iTrader: (2)

That is a very wrong statement sir. The deciding factor on duals vs. singles has more to do with the max rpm range and valve train weight. Even at .650 lift with a stock size or light weight over sized valve at moderate rpms a single beehive will work fine.

TORCHD 02 TA

iTrader: (39)

That's not true.. A higher lift has a more aggressive ramp rate. You put on a single spring with a .650" lift and let me know how that goes for you

01ssreda4

iTrader: (96)

Hate to bust your ***** here, but see his avatar, he works for PAC. He probably knows what he is talking about.

TORCHD 02 TA

iTrader: (39)

that doesn't mean shiit

TurboBuick6

iTrader: (2)

All depends on the spring rates. A dual with a rate of 200 will act different than a single with a rate of 350. Not only that you have to factor in the weight of valve, lighter weight of the spring and also the retainer, the rocker ratio and also pushrod weight. Its not as simple as the amount of lift and durration.

Higher lift does not always mean more agressive ramp either. A long durration has a slower ramp than a shorter durration at the same lift.

racer7088

Like the PAC guys is telling you it's all in the combo. We used PAC 1255 big beehives to go 7500 rpm with very light valves and .685 lift. Also have smoother lobes even though they had more lift as he was saying.

1FSTLS1

iTrader: (9)

So if I go with the Patriot golds would that be best?

01ssreda4

iTrader: (96)

Lunati, PRC and Patriot all have nice double spring kits. The PAC 1518s are a single beehive rated to .650 lift thats an option as well. Im personally running the Lunatis on .612 lift.