My First Attempt at Camshaft Timing the LT5 - Page 3 - ZR-1 Net Registry Forums

LGAFF · 07-29-2010

Kent Moore next to the repro:

HAWAIIZR-1 · 07-30-2010

Quote:

Originally Posted by LGAFF

Kent Moore next to the repro:

Nice work........almost as good as Carter's.

Glad to see some tools will be available to folks that need them since the originals are expensive and hard to come by.

HAWAIIZR-1 · 07-30-2010

A good point made by Jerry is to check to ensure you have the plug in the back of the cam after washing out if new or reground or otherwise serviced. I used Loctite 565 and tightened per the FSM. Mine cams came back without any plugs in the rear as they assumed I would wash out and replace anyway with new plugs. Thanks for mentioning Jerry!!

Jagdpanzer · 07-30-2010

Good tip Craig,
What size is the plug?

HAWAIIZR-1 · 07-30-2010

Quote:

Originally Posted by Jagdpanzer

Good tip Craig,
What size is the plug?

Phil,

Sorry, I owe you folks that info. I don't want to have anyone have to take the camshaft into the hardware store like I did to match it up. I had it wrapped in a towel and I think they thought I was toting a gun; I might have been carrying it like a soldier would.........that does not help.

A26B · 07-30-2010

Quote:

Originally Posted by Jagdpanzer

What size is the plug?

1/8" NPT, allen socket

http://jerrysgaskets.com/store2/root...roducts_id=440

Polo-1 · 08-08-2010

Quote:

Originally Posted by HAWAIIZR-1

We found all the camshafts to be about 2-3 degrees off the ideal settings with factory pinning and needed to adjust all of them. All the camshafts were checked for timing again even if it was a little time consuming to remount the dial indicator on all 4, it was worth it to confirm.

Well, I guess I can join the "Timed the LT5 Camshafts Club" now.

Craig

Nice job

I found my factory pin time 120.75 and 105.5

I'm at 114 and 111 now (3hrs myself ) still more fun to go.

HAWAIIZR-1 · 08-08-2010

Quote:

Originally Posted by Polo-1

Nice job

I found my factory pin time 120.75 and 105.5

I'm at 114 and 111 now (3hrs myself ) still more fun to go.

Thanks Kevin. Wow, that is way off and definitely worth it to degree them in I see. I was not sure how much difference SGC Stage I cams would be with the change in lift and duration. Awesome that you could do all that by yourself and in record time.

Polo-1 · 08-08-2010

I think part of it is the Moldex crank has up to 3 degrees of play in it, with the kent moore tool in should be at 51* locked. I can rock it down to 48.5 up to 52 .
I checked my stock cranks, and had the same play

I have stage II intakes with stage I exhaust

Thats LH only...

HAWAIIZR-1 · 08-08-2010

Quote:

Originally Posted by Polo-1

I think part of it is the Moldex crank has up to 3 degrees of play in it, with the kent moore tool in should be at 51* locked. I can rock it down to 48.5 up to 52 .
I checked my stock cranks, and had the same play

I have stage II intakes with stage I exhaust

Okay, thanks for the explanation. I never thought of checking the play in the crank when locked down at the 51 degrees. Your motor is going to be a killer.

07-29-2010	#21
LGAFF Join Date: Mar 2007 Location: Crystal Lake, IL Posts: 7,180	Re: My first attempt at timing the LT5 camshafts Kent Moore next to the repro: __________________ LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359

07-30-2010	#23
HAWAIIZR-1 Join Date: May 2010 Location: Japan Posts: 3,095	Re: My first attempt at timing the LT5 camshafts A good point made by Jerry is to check to ensure you have the plug in the back of the cam after washing out if new or reground or otherwise serviced. I used Loctite 565 and tightened per the FSM. Mine cams came back without any plugs in the rear as they assumed I would wash out and replace anyway with new plugs. Thanks for mentioning Jerry!! __________________ Craig "ZR-1 NO KA 'OI" "ZR-1 ICHIBAN" 1995 #228 Black/Black with Dunn Heads ZR-1 owner since September 2003 ZR-1 Net Registry Founding Member #0074 NCM Lifetime Member #2048

07-30-2010	#24
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,646	Re: My first attempt at timing the LT5 camshafts Good tip Craig, What size is the plug?

08-08-2010	#29
Polo-1 Join Date: Sep 2005 Location: Washington Posts: 956	Re: My first attempt at timing the LT5 camshafts I think part of it is the Moldex crank has up to 3 degrees of play in it, with the kent moore tool in should be at 51* locked. I can rock it down to 48.5 up to 52 . I checked my stock cranks, and had the same play I have stage II intakes with stage I exhaust Thats LH only... Last edited by Polo-1; 08-08-2010 at 06:40 PM.