Ryne @ CMS

iTrader: (10)

i am building a 441 with ls7 heads. this motor will see a little bit of nitrous 150 -200 most. i do not drive this car daily, and i can handle a large camshaft as a cruiser (i had a 252-262 in a 408 before this). the motor is being built with 12.1 compression, i was thinking of something in high 240/low 250 intake side, and i would imagine 260+ on the exhaust side around a 110 lsa, i am just having problems finding the proper lift i want because of the 1.8 ls7 rocker. of course i am keeping this hydraulic, and combine with the ti valves i am running should rev to 7k easy. any help would be appreciated.

Ryne @ CMS

iTrader: (10)

anyone ??

Ryne @ CMS

iTrader: (10)

still waiting.

Ferocity02

iTrader: (60)

Start with this: https://ls1tech.com/forums/generation-iv-internal-engine/560599-cam-ls7-heads-help-needed.html

Ryne @ CMS

iTrader: (10)

already read that thread, your going in a different direction then me, i am going more for all out Hydraulic roller power, as i do not drive this car much.

Ferocity02

iTrader: (60)

Well, what do you want from the cam? Need to narrow down the possibilities a little bit.

blackbelt

iTrader: (5)

Ryne just put the special spark plugs in there...they can do everything you don't even need a cam....they will even wipe your ***. lol..you know what i say go big or go home....or go bigger.

Ryne @ CMS

iTrader: (10)

more of a max effort kind of deal, i am thinking of going with 252-262 on 110lsa 644-655 int/ext, its a cammotion grind, thinking abut raising the compression to 12.5 gets my dynamic compression to 8.6 or so. this car will see lots of torco, or 100 octane, like i said i dont drive this car often

blackbelt

iTrader: (5)

Don't ignore me ryne im still here..

slow trap

iTrader: (22)

is that the lift using the 1.7 rockers ? if that is with 1.7 rockers it seems pretty agressive to be using with 1.8s.that would be like .682/.693

Stang's Bane

iTrader: (22)

Be careful about going with too big of a cam, the stock rockers may not handle the needed spring pressure. If you are going with the Jesels, then go nuts. Greg Fell has busted 2 so far within ~2500 miles.

Ferocity02

iTrader: (60)

I agree, that cam is pretty big dude. For LS7 heads, you will want more split than that. I am running 18 degrees of split on mine. Katech's torquer cam has 24 degree's of split. That cam will struggle down low, and the driveability won't be that great.

Ryne @ CMS

iTrader: (10)

that was with a 1.8 rocker, so lift really is .644-.655

Ryne @ CMS

iTrader: (10)

i ran a larger cam in my 408 253-262, 113lsa, car drove fine, made 550rwhp-501 torque. it only had 11.8 compression. 252-262, i think should work fine, i am going to do some exhaust work. combine the 110 lsa, with the 12.5 compression puts my DCR around 8.7, which is not bad, so i dont see how you see it will struggle on the low end in a 441

GIGAPUNK

iTrader: (2)

What kind of spring pressures and lobes was he running?
Was it the bearings or the actual rocker?

GIGAPUNK

iTrader: (2)

Oh and Ryne,

Did you ever do a intake comparo with your ported LS7 vs the LS7 carb intake?

CalSpeedPerformance

iTrader: (64)

I recommend more split on a cnc ported ls7 head...we run 12-16 degrees split on most due to the huge intake flow

JPH

iTrader: (2)

Custom Crane 246/264 .590/.590 113 or 252/266 .590/.590 113 both (LSHS Lobes)
note: both cams shown with 1.7 rocker lift, 1.8s will make .624 lift.

Patrick G

iTrader: (14)

Both recommendations are excellent. I like the second cam choice a little better since this is a 441. If I were to change anything, I might narrow the LSA to 112 knowing the larger displacement will make the LS7 heads a little more undervalved.

Sales2@Texas-speed

iTrader: (5)

WOW, that's an old thread!