casrak7

are the high-rev morel brand lifters a must to reach 7300 rpm reliably without pumping up and losing power? or can it be done with a stock style lifter? Aggressive hyd. roller cam. .645/.611 237/242 on a 109. LT-1, 355 cube.

gregrob

iTrader: (8)

Lol...

FWIW I chose Morel link bars for my 7,000 RPMS capable 355.

Don't skimp on **** when trying to wing it hard, it will bite you know the ***..

1963SS

With that cam I would say go with the Morels or the Lunati's that are made by Morel. Also your LT1 won't go to 7300 with the stock electronics. You might want to igure n 7200 Max and possibly a bit lower. Sounds like a fun build.

joelster

My 350 would cut out at just a touch above 7k. Not sure how some guys get theirs to rev to 7200.

SS RRR

iTrader: (2)

Differences between an OBDI and OBDII PCM.

bowtienut

iTrader: (1)

My OBD1 cuts at 7100.

quik95lt1

iTrader: (7)

mine did the same pat........my OBDI stopped making fuling and timing changes at 7100 and started breaking up badly at 7200...........

op i ran a cam close to that one in my 355 i was 234/242 .605/.605 108LSA .....peak was at 6500 with out of the box TFS 23* ....shifted at 6900

96capricemgr

iTrader: (1)

What about the GMPP "Cadillac racing" if you really don't want to use stock?

quik95lt1

iTrader: (7)

personally i think just a LS7 will do what he wants......

BOLO

iTrader: (40)

Agreed..and more than adequate

BIGCAT7274

Keep the preload to a minimum and run real good springs. We run 242/248 @ 0.050 go through the traps at 6900.

RamAir95TA

iTrader: (2)

I agree that LS7s should be plenty for the application (and inexpensive to boot).

bowtienut

iTrader: (1)

Stock lifters, 1/8 turn preload, 7100 rpm. Big block style beehive springs from AI. No issues in 2 seasons so far.

quik95lt1

iTrader: (7)

yupp i run my stock ls2 at .035 preload with good springs........hear a bit of sweing machin here and there but more powerrrrr!!!!!!!!!!! lol

Wicked94Z

iTrader: (26)

depends on the lobe profile, lifters, valve mass, and springs. Typical problems with the cast body lifters is flex due to side loading which causes them to bleed down.

GIZMO

iTrader: (8)

These actually work pretty good.

flyinZ

iTrader: (15)

GMPP lifters here, cam is in that ballpark, shift @ 6500. So far so good. Might change things next year, who knows.