What have we here?
Thread Starter
Drifting
Joined: Jul 2005
Posts: 1,375
Likes: 2
From: Austin Texas
What have we here?
I am stripping down an LS6 engine. It's a motor I never heard run, but it was from another race team. I bought it used when I saw some of the things in the engine (good rockers, good rods, pistons, etc). The engine builder is no longer in business. The engine shut down when the #7 and #8 rod bearings went, perhaps due to detonation. Most of the bearings are scored to some degree or another, but that's not the question.
The cam is not stock as far as I can tell. It says "ISKY" on the end, along with some other numbers:
RR-265-275-HYD
271
13L
113
109C
I don't know from cams. So best guess is HYD means for hydraulic lifters. ISKY is a well known cam maker. 271 might be lift?
Any info on this odd part would be appreciated. I don't want to blindly put this back in the motor after I fix the other issues to find out the cam WAS the causal factor for the breakdown.
The cam is not stock as far as I can tell. It says "ISKY" on the end, along with some other numbers:
RR-265-275-HYD
271
13L
113
109C
I don't know from cams. So best guess is HYD means for hydraulic lifters. ISKY is a well known cam maker. 271 might be lift?
Any info on this odd part would be appreciated. I don't want to blindly put this back in the motor after I fix the other issues to find out the cam WAS the causal factor for the breakdown.
Team Owner
Joined: Jul 2012
Posts: 34,479
Likes: 532
From: Central PA. - - My AR15 identifies as a muzzleloader
I believe in the Beer Fairy
I'm pretty sure 271 isn't the lift in a race motor. Isky would certainly mean Iskenderian. Might want to check with them on what the numbers mean. Might well be a custom grind for all ya know. Numbers probably mean overlaps or some center reference, it's hard to say. Might mean an order number for all I know.
Team Owner
Joined: May 2003
Posts: 23,480
Likes: 9
From: East Meadow NY
St. Jude Donor '12
I am stripping down an LS6 engine. It's a motor I never heard run, but it was from another race team. I bought it used when I saw some of the things in the engine (good rockers, good rods, pistons, etc). The engine builder is no longer in business. The engine shut down when the #7 and #8 rod bearings went, perhaps due to detonation. Most of the bearings are scored to some degree or another, but that's not the question.
The cam is not stock as far as I can tell. It says "ISKY" on the end, along with some other numbers:
RR-265-275-HYD
271
13L
113
109C
I don't know from cams. So best guess is HYD means for hydraulic lifters. ISKY is a well known cam maker. 271 might be lift?
Any info on this odd part would be appreciated. I don't want to blindly put this back in the motor after I fix the other issues to find out the cam WAS the causal factor for the breakdown.
The cam is not stock as far as I can tell. It says "ISKY" on the end, along with some other numbers:
RR-265-275-HYD
271
13L
113
109C
I don't know from cams. So best guess is HYD means for hydraulic lifters. ISKY is a well known cam maker. 271 might be lift?
Any info on this odd part would be appreciated. I don't want to blindly put this back in the motor after I fix the other issues to find out the cam WAS the causal factor for the breakdown.
Thread Starter
Drifting
Joined: Jul 2005
Posts: 1,375
Likes: 2
From: Austin Texas
I think I found it... Puzzling because this cam is supposed to top out at 6000 RPM. The engine is clearly built to spin fast (light rods, great rockers/valvetrain, Callies crank...) so why use a cam that limits it?
Melting Slicks
Joined: Aug 2008
Posts: 3,451
Likes: 27
From: Bay Area CA
Last edited by tlove32; Aug 1, 2012 at 01:31 PM.
