high rpm hyd. roller

Reply Subscribe

Thread Tools

Search this Thread

Feb 8, 2012 | 11:27 PM

casrak7

Thread Starter

Teching In

Joined: Jul 2011

Posts: 11

Likes: 0

high rpm hyd. roller

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.

Feb 8, 2012 | 11:49 PM

gregrob

TECH Senior Member

iTrader: (8)

Joined: Sep 2008

Posts: 5,130

Likes: 4

From: 6,000+ feet

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 ***..

Feb 9, 2012 | 05:37 AM

1963SS

On The Tree

Joined: Oct 2011

Posts: 179

Likes: 3

From: Eastern Kentucky

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.

Feb 9, 2012 | 05:49 AM

joelster

10 Second Club

Joined: Oct 2007

Posts: 2,630

Likes: 28

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

Feb 9, 2012 | 05:55 AM

SS RRR

Village Troll

iTrader: (2)

Joined: Oct 2002

Posts: 11,111

Likes: 598

From: Jackstandican

Quote:

Originally Posted by joelster

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

Differences between an OBDI and OBDII PCM.

Feb 9, 2012 | 06:45 AM

bowtienut

TECH Fanatic

iTrader: (1)

Joined: Mar 2007

Posts: 1,685

Likes: 5

From: Bright, IN

Quote:

Originally Posted by SS RRR

Differences between an OBDI and OBDII PCM.

My OBD1 cuts at 7100.

Feb 9, 2012 | 08:34 AM

quik95lt1

9 Second Club

iTrader: (7)

Joined: Dec 2008

Posts: 4,464

Likes: 12

From: Rhode Island

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

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Pouria Savadkouei

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Verdad Gallardo

7 Most Reliable High-Performance Engines GM Has Ever Built

Verdad Gallardo

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Verdad Gallardo

6 Common C5 Corvette Failures and What's Involved In Repairing Them

Pouria Savadkouei

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Verdad Gallardo

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Pouria Savadkouei

Top 10 Most Powerful Chevy Trucks Ever Made!

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Verdad Gallardo

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Verdad Gallardo

Feb 9, 2012 | 09:24 AM

quik95lt1

9 Second Club

iTrader: (7)

Joined: Dec 2008

Posts: 4,464

Likes: 12

From: Rhode Island

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

Feb 9, 2012 | 09:30 AM

#10

BOLO

10 Second Club

iTrader: (40)

Joined: Nov 2006

Posts: 3,180

Likes: 2

From: Mundelein,Illinois

Quote:

Originally Posted by quik95lt1

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

Agreed..and more than adequate

Feb 9, 2012 | 11:17 AM

#11

BIGCAT7274

TECH Enthusiast

Joined: Oct 2011

Posts: 556

Likes: 0

From: Apopka FL

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

Feb 9, 2012 | 11:23 AM

#12

RamAir95TA

TECH Senior Member

iTrader: (2)

Joined: May 2005

Posts: 9,467

Likes: 8

From: South Jersey

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

Feb 9, 2012 | 11:25 AM

#13

bowtienut

TECH Fanatic

iTrader: (1)

Joined: Mar 2007

Posts: 1,685

Likes: 5

From: Bright, IN

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

Feb 9, 2012 | 12:06 PM

#14

quik95lt1

9 Second Club

iTrader: (7)

Joined: Dec 2008

Posts: 4,464

Likes: 12

From: Rhode Island

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

Feb 9, 2012 | 01:06 PM

#15

Wicked94Z

10 Second Club

iTrader: (26)

Joined: Jul 2005

Posts: 3,725

Likes: 1

From: Spokane, Wa

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.