COSPEED

iTrader: (331)

A ready-to-install, complete Dual Valve Spring Kit that includes springs, retainers, valve locks, valve stem seals and locators to extend engine RPM and boost performance for all Chevy Small Block V8 engines. Features chrome silicon alloy, precision wound, heat-set, 1.306" O.D. dual valve springs for required valve spring seat and open load pressure, plus total spring travel that will accommodate cams with aggressive gross valve lifts of up to .660". Also included are CNC machined, 4140 steel alloy spring retainers, CAD designed to reduce weight while retaining uncompromised strength and durability. Precision machined, 7-degree steel valve locks are also provided for superior valve stem holding. Finally, each kit also includes premium steel locators and high-quality, Viton synthetic rubber, steel reinforced valve stem seals for superior valve stem lubrication and oil control.

Applications include: Gen I Chevy Small Block V8 262-400 and Gen II (LT1-LT4) V8 305-350 1987 & Later endurance circle track, off road, road racing, and marine or serious street performance applications.

Part #73925 Dual Valve Spring Specs:
1.306" O.D.
0.676" I.D.
153 lbs. @ 1.810" Seat Load
400 lbs. @ 1.150" Open Load
0.660" Maximum Valve Lift

CLICK HERE >> Lunati LT Dual Valve Spring Kit w/ Steel Retainers, .660" << CLICK HERE

Puck

iTrader: (17)

That is a very nice kit for the price. Looks like a good replacement for the now expensive Crane 10308 package .

gregrob

iTrader: (8)

I've used them before. Work great

lt1-xjs

On a stock lt1 head, whats the actual installed height?

BizZzatch350

iTrader: (33)

Thanks for sharing, always good to see new LT1 performance products.

I8ASaleen

iTrader: (9)

Looks good, I will probably pick up a set of these when I do my can swap soon.

Wicked94Z

iTrader: (26)

With .100" thick locators and standard height locks in the kit.... probably 1.70-1.74 depending on the retainer design.

lt1-xjs

That's .100" less than the recommended 1.810" and would limit lift to .560" and have a butt load of seat pressure. I was inquiring about the actual measured height.

nitrous2fast

iTrader: (2)

That's what he gave you....

lt1-xjs

He gave an educated guess, not the actual measurement.

Wicked94Z

iTrader: (26)

Coilbind spec is 1.100. order a cheap 20 dollar set of +.050" 7° machine locks and you'll be in.better shape.

Wicked94Z

iTrader: (26)

Seat pressure is what hydraulic rollers need more of anyways to control seat bounce which is where most HR's struggle with higher rpm.