OT-Cam advance in a Vortec 4.3L V-6 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Yellow Cheyenne · 12-01-2003, 12:20 PM

Posted in the 88-98 board but hoping the question will get more visibility here.

Has anyone ever installed a roller timing chain set that allows the cam timing to be advanced? The set will allow 4 degrees of advance in the cam timing. This is all for a '96 V-6 Vortec (X code) with the CPI fuel injection. If you have tried it, were there any benefits or problems?

Thanks,

Randy

Longhorn Man · 12-02-2003, 01:45 AM

How many miles you got on that CPI? Has any of the problems come up yet?

Yellow Cheyenne · 12-02-2003, 12:11 PM

Long strory. The pickup has 194,000 miles on it. I just bought it from the original owner who said he had never had any major work done on the engine or transmission. From the layer of oil/dirt on everything, I believe him. The transmission went out on it a couple of weeks ago. I was going to pull the engine and transmission and while the transmission was being rebuilt, I was going to put a gasket kit in the engine. About the time I pulled the engine, another engine came up on ebay that was from a '97 S-10 with only 64,000 miles on it and I was able to buy it for $365. That is now the engine that I will be reinstalling in the pickup. The one that was in it ran fine, but I just figured with the miles it had on it that this might be a good time to get a lower mileage engine into the pickup for a pretty reasonable amount of money. In answering your question, I did not have any problems with the CPI, but I have only personally driven the pickup for about 1200 miles. I don't think it had been worked on previously. I just hope the engine I am installing is good.

Randy

Longhorn Man · 12-03-2003, 01:38 AM

OK, by 97 they pretty much got it right. (Or are you going to use the intake and stuff from the old engine?)
I am of no help on your original question.

12-01-2003, 12:20 PM	#1
Yellow Cheyenne Registered User Join Date: Jun 2001 Location: Eastern Kansas Posts: 488	OT-Cam advance in a Vortec 4.3L V-6 Posted in the 88-98 board but hoping the question will get more visibility here. Has anyone ever installed a roller timing chain set that allows the cam timing to be advanced? The set will allow 4 degrees of advance in the cam timing. This is all for a '96 V-6 Vortec (X code) with the CPI fuel injection. If you have tried it, were there any benefits or problems? Thanks, Randy __________________ '72 Cheyenne. AC, PS, PB, Rear slider window, tilt. Light yellow (grapefruit yellow according to new sales literature from '72) '56 Chevy short step V-8 (My dad bought it new!!) '70 Olds 442 convertible '70 Olds Rallye 350

12-02-2003, 12:11 PM	#3
Yellow Cheyenne Registered User Join Date: Jun 2001 Location: Eastern Kansas Posts: 488	Long strory. The pickup has 194,000 miles on it. I just bought it from the original owner who said he had never had any major work done on the engine or transmission. From the layer of oil/dirt on everything, I believe him. The transmission went out on it a couple of weeks ago. I was going to pull the engine and transmission and while the transmission was being rebuilt, I was going to put a gasket kit in the engine. About the time I pulled the engine, another engine came up on ebay that was from a '97 S-10 with only 64,000 miles on it and I was able to buy it for $365. That is now the engine that I will be reinstalling in the pickup. The one that was in it ran fine, but I just figured with the miles it had on it that this might be a good time to get a lower mileage engine into the pickup for a pretty reasonable amount of money. In answering your question, I did not have any problems with the CPI, but I have only personally driven the pickup for about 1200 miles. I don't think it had been worked on previously. I just hope the engine I am installing is good. Randy __________________ '72 Cheyenne. AC, PS, PB, Rear slider window, tilt. Light yellow (grapefruit yellow according to new sales literature from '72) '56 Chevy short step V-8 (My dad bought it new!!) '70 Olds 442 convertible '70 Olds Rallye 350

12-02-2003, 01:45 AM	#2
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	How many miles you got on that CPI? Has any of the problems come up yet?

12-03-2003, 01:38 AM	#4
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	OK, by 97 they pretty much got it right. (Or are you going to use the intake and stuff from the old engine?) I am of no help on your original question.



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