A.R. Shale Targa

iTrader: (2)

Seems that people are also VERY sceptical of boxed parts. Assuming there are only a few manufacturers world wide and dozens of packaging companies, today's consumers want to know the intricate details of WHY is something better or more expensive. In many cases it's difficult to SEE the difference by visual inspection...which is why testimonials are all the rage as people are always looking for the super dooper; lots more good'r company to hitch their wagon to.

COSPEED2

iTrader: (7)

IF you are looking for the Morel Drop ins, we just introduced 5 sets into our LS7 lifter GP.

https://ls1tech.com/forums/sponsor-g...l#post18108450

there is the link. go get em!!

Goosecaddy05

I'm just curious as to why ls7 lifters are rated for less rpm than the stock motor from which they are based? doesn't the ls7 rev to 7k stock?

COSPEED2

iTrader: (7)

It can go there yes. We dont recommend them that high for many reasons.
The LS7 (per gm) makes peak power at 6300 rpm on their SAE rated dyno. And they use lighter valves including the ti intake valve. That helps out quite a bit. If someone is going to go there often on the strip, we would rather recommend a higher quality lifter for that range as they wont be disappointed.

LilJayV10

iTrader: (39)

That right there is a very good point. That's also the reason they can run the cam profile they do.

COSPEED2

iTrader: (7)

^ Thanks!

Also using higher spring pressures and newer and more aggressive cam profiles would likely make you want a higher quality lifter with better internals and even maybe a larger dia roller.

Goosecaddy05

that makes me want to have my rev limit set to 6500 now... i'm usung ls7 lifters on my motor with the limit at 67-6800

COSPEED2

iTrader: (7)

Well it really depends on the valves, springs, and the cam profile.
That cam seems a tad big for your setup really.
The max rpm you rev your engine should be based off of gear ratio in the trans and rear, and peak hp of your setup.
We do not recommend them above that.

speedtigger

iTrader: (16)

You can also do some searches. There are many discussions on this. It will give you an idea of what others are doing with those lifters.

Goosecaddy05

Martin at tick performance specified the cam for me... my gear ratios are 2.97, 2.07, 1.43, 1, .85, .56, with a 3.73 dif... hp peaks at 5900 and stays flat till 6500 then falls off till redline at 6700... has 400 tq at 3k then peaks at 4.4k at 468 and stays flat til 5.4k then starts dropping off... drrives smooth with very little surge... i can even cruise through parking garages in first at 1200 with no prob ((while setting off everyone's car alarms))

Goosecaddy05

the springs are the PRC .675 ones i think they are Manley 2.12 intake and Ferrea 1.6 exhaust valves

Goosecaddy05

AFR set to 11.9 from 2k til redline at WOT

COSPEED2

iTrader: (7)

I would recommend not using the LS7s then. We do have the Morels on that GP for $165. Once they are gone, they are gone.