waybad

iTrader: (4)

would you run a lift of .612 on pac springs that were good for .600?
thanks TC

Darkman

iTrader: (2)

Which PAC springs?

crainholio

iTrader: (2)

Only if I really hated my engine.

NVR_SPDS

iTrader: (39)

If your looking for a very good reason to replace your engine, then SURE!!!

Heres what happened to me when a spring failed: https://ls1tech.com/forums/generatio...l#post13804872

supersick99z

iTrader: (66)

I think you already know the answer to that....

waybad

iTrader: (4)

Thanks,, thought it would be a bad idea,, but a guy locally said it would work,, won't be buying his cam!!!!!!!!!!!!

TurboBuick6

iTrader: (2)

Im going to guess 1218's.

You actually can do it but I would not recommend it. The 1218 and 1518 have the same solid height. The reason the 1518's can run 650 compared to the 600 the 1218's can run is because they are nitrided. The nitriding process strengthens the exterior of the wire enabling the spring to compress more without hurting it.

Darkman

iTrader: (2)

I agree and I was not about to suggest that the PAC lift specification be exceeded, but I was going to check that lift specification against the PAC Catalog.

TurboBuick6

iTrader: (2)

Yeah thats what I was quoting you about. .600 lift is the 1218's.

The rest was for general knowledge for everyone.

waybad

iTrader: (4)

mine are 1218s

Midnight02

iTrader: (8)

Ummm .612 > .600, so...NO, not unless your comfortable with eating the expense of an engine failure instead of just buying the right springs for the job. Typically the springs go for less than the rebuild.