What would cause the camshaft offset to be -7.5?
The distributor isn't really adjustable but shouldn't it improve performance to set it properly?
I have a 2002 s10 4.3 with 107,000 miles and it has +1.5 camshaft offset.
The one with -7.5 is a 2003 with 172,000 miles. Would a worn timing chain cause this?
If you're within +-10*, that is as close as it's going to get. You could modify the hold down to get it closer. No difference in performance getting it to 0.
Russ Kemp
I got it to under 1.0. It feels more powerful, or it's a placebo effect.
Or more like it doesn't feel down on power like it used to.
Your distributor gear is most likely very worn - common problem on these... The closer to 0 the cam sync is the better off you are - they typically idle a little smoother and run better around there...
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
Gear isn't worn, shaft isn't worn.
Know anything about this? https://www.hptuners.com/forum/showt...the-engine-off
Cam offset doesn't change by even 10 degrees on the scanner unless I shut the engine off. It sucks to have had to adjust it like that. That means I move the distributor and nothing changes until I turn the engine off and restart it. yet it shows 0 degrees but goes +/- .8 when driving.
You need to raise the RPM to at least 1000 to get an accurate offset value.
Russ Kemp
AND typically a throttle snap will allow it to show the updated value...
2010 Vette Stock Bottom LS3 - LS2 APS Twin Turbo Kit, Trick Flow Heads and Custom Cam - 12psi - 714rwhp and 820rwtq / 100hp Nitrous Shot starting at 3000 rpms - 948rwhp and 1044rwtq still on 93
2011 Vette Cam Only Internal Mod in stock LS3 -- YSI @ 18psi - 811rwhp on 93 / 926rwhp on E60 & 1008rwhp with a 50 shot of nitrous all through a 6L80
~Greg Huggins~
Remote Tuning Available at gh[email protected]
Mobile Tuning Available for North Georgia and WNC
the 4.3 specs are +/- 20, only the 5.7 are 0. allot of wrong info on the internet about this. as long as your not +/- 26(a tooth off) or more your distributor is set right and the computer will compensate to where its programmed. but if u want to adjust it more. pop the holdown off and shave the insides of the U part down to make it adjustable. but still ecm takes over and adjust accordingly. make sure u are revving the engine to over 2500 rpm to get the correct reading.
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