head/cam swap issue.
Thread Starter
Navigator
Joined: Mar 2011
Posts: 9
Likes: 0
head/cam swap issue.
I have a 98 Vette M6, it had a .581/.588 cam from cam with 806 heads. I swapped my over to 243heads with texas-speed MS3 cam and oil pump and etc. I start up my car it idles just fine but when I go to drive it, i can press the clutch to coast to a stop and the car will stall.
It doesnt have a tune yet, as i have just finished the install. Could this be tune issue, or did i install something wrong.
All help is appreciated. thanks
It doesnt have a tune yet, as i have just finished the install. Could this be tune issue, or did i install something wrong.
All help is appreciated. thanks
Safety Car
Joined: Aug 2011
Posts: 4,449
Likes: 409
From: Portland OR
Of course it's a tune issue. You changed the cam and heads.
The airflow requirements throught the rpm range are now different.
It isn't a self learning system, it's a "you teach it" system.
Ron
The airflow requirements throught the rpm range are now different.
It isn't a self learning system, it's a "you teach it" system.
Ron
Le Mans Master
Joined: Sep 2003
Posts: 6,276
Likes: 227
From: Farmington CT
Cruise-In VII Veteran
Tune. look into updating to the newer 2001up PCM
you can re-pin your harness to work with the newer PCM
http://www.gmhightechperformance.com...s/viewall.html
you can re-pin your harness to work with the newer PCM
http://www.gmhightechperformance.com...s/viewall.html
Instructor
Joined: Oct 2007
Posts: 117
Likes: 0
From: Pampa Texas
An noted, 100% tune issue. I wouldn't worry at all until you get a tune. Whileas the newer computer is vastly superior, an experienced tuner can get your 98 rolling properly with your existing computer. If I ever had a 97-98 I would prefer a computer change as well, but it's not required.
Thread Starter
Navigator
Joined: Mar 2011
Posts: 9
Likes: 0
yeah it sucks, I'm probably going to have to trailer it to the shop to have it tuned because its about 1hr away and i will be going through a lot of traffic. and don't want to deal with it. I'm trying to break in the cam now. They say drive it about 100miles and you should be good, but I'm only at 8 so far lol.
Drifting
Joined: May 2010
Posts: 1,482
Likes: 2
From: Pearland, TX
If you have two feet it shouldn't be that bad. I was able to break mine in when it was running rough. I'd just hold the gas a little bit when I was braking.
It'll be fine to drive, but don't get too throttle-happy with it.
It'll be fine to drive, but don't get too throttle-happy with it.
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Safety Car
Joined: Jul 2007
Posts: 4,456
Likes: 29
From: Wichita Falls Texas
yeah it sucks, I'm probably going to have to trailer it to the shop to have it tuned because its about 1hr away and i will be going through a lot of traffic. and don't want to deal with it. I'm trying to break in the cam now. They say drive it about 100miles and you should be good, but I'm only at 8 so far lol.
there is no break in, get it tuned and give it hell