95 GMC

Performance modifications, tips & tricks

Moderators: flyingpolarbear, Dev, James B.

Speeder
Posts: 10763
Joined: Fri Apr 30, 1999 9:12 pm
Location: 2021 Dodge Durango R/T 2WD, 2008 Colorado work beater, 2003 Dodge Dakota pro-touring project

Post by Speeder »

Chevy 97 wrote:Quick question concerning camshafts and computer compatible, I found a cam that I would like to have for the engine, but when you look at the specs it says not computer compatible. Do you need to use a camshaft that is computer compatible?
Some computer control systems require a certain amount of vacuum signal for the MAP sensor, and too much lope will interfere with knock sensors. Computer cams are designed to work with the computer.

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Post by Chevy 97 »

Speeder wrote:
Chevy 97 wrote:Quick question concerning camshafts and computer compatible, I found a cam that I would like to have for the engine, but when you look at the specs it says not computer compatible. Do you need to use a camshaft that is computer compatible?
Some computer control systems require a certain amount of vacuum signal for the MAP sensor, and too much lope will interfere with knock sensors. Computer cams are designed to work with the computer.

I looked up the cam that is in my 383 from GM. That cam also says it isn't computer compatible. Yet they sell it in the 383 for a computer controlled truck. Comp cams looks like they have one that would be of interest. XR264 HR13

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Post by Chevy 97 »

Image

Image

I took a few pictures of my wiring, so I would remember where things go. Some wires I put colored zip ties on to match them up. I am removing the wiring so I can park it outside when the engine is getting worked on.

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Post by Chevy 97 »

Image

This is a first for me to see, a support on the back of the tail shaft on the transfer case.

Bushwacker
Posts: 109
Joined: Wed Jul 04, 2012 4:05 pm

Post by Bushwacker »

Chevy 97 wrote:Image

This is a first for me to see, a support on the back of the tail shaft on the transfer case.
I've never seen that before either. Looks like a good thing thou.

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Post by Chevy 97 »

I asked Whipped383, since he works on a lot of vehicles. He said he has seen a few of these on the 2500 trucks with the newer transfer cases. My brother in law owned this truck first, I think he ordered it in. At the time he got this truck he was working as a contractor out in the oil field. He had to travel to a lot of well sites. with the summer rains and the winter snow, plus a 454, it makes sense that this is on this vehicle. The transfer case just hangs on by 6 bolts. I wish I had this on my half ton, since I had changed to the 4L80E.

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Post by Chevy 97 »

Image


Finally got a chance to work on this, removed the driveline.

Image

I got one torsion bar to move, the other one is being stubborn.

Image

Sure glad these came off with out issues.

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Post by Chevy 97 »

I have been a bit slow on this truck. I had to cut the exhaust pipe to get it out. Today, I got rid of the starter, the cover over TC. Drained oil. Removed filter and front skid plate. Tomorrow I may reve the transfer case. I still need to remove the top of the intake to get at fuel lines. At least engine roated to remove TQ bolts. Broke one bolt in the Cover. I hoe it was not loctited in place. Not going to be easy to remove..

97k15004wd
Posts: 1167
Joined: Fri Oct 27, 2006 7:32 pm
Location: Waikikamukau

Post by 97k15004wd »

I think we all have a broken bolt story or two! It sucks - takes a lot of time. Some of the ones I've removed were so aggravating I kept them as souvenirs. Good luck with it

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Post by Chevy 97 »

Image

Headers are removed.

Image

Image

I had to cut the exhaust because everything was welded.

Image

Brother in law put shorties on years ago, because the cast manifolds kept cracking.

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Post by Chevy 97 »

Image

Wiring harness out of the way, distributor out, and the top intake is of.

Image

Transfer Case is off.

Image

I am not to the point of pulling the engine and transmission together.

97k15004wd
Posts: 1167
Joined: Fri Oct 27, 2006 7:32 pm
Location: Waikikamukau

Post by 97k15004wd »

What's with the photo bucket watermarks on these pictures?

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Post by Chevy 97 »

Image

Image

Engine is out of the truck

Image

I put the new engine stand together, also put engine on the stand

Image

removed the injectors


Image

Image

Image

This is as far as I got for today.

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Post by Chevy 97 »

Not sure, I do not see it on my end. I have had issues with photo bucket.

Hog
Posts: 5025
Joined: Tue Dec 11, 2001 4:00 pm
Location: 1997 Chev ECSB L31 350 1997 GMC Sierra SLE RCSB, Ontario

Post by Hog »

I dont see the watermarks either.

peace
Hog

Speeder
Posts: 10763
Joined: Fri Apr 30, 1999 9:12 pm
Location: 2021 Dodge Durango R/T 2WD, 2008 Colorado work beater, 2003 Dodge Dakota pro-touring project

Post by Speeder »

I saw the watermarks, they were there. They weren't very transparent, and made it hard to see what was on the pictures. They aren't there now. Probably a Photobucket thing. I wouldn't worry about it.

97k15004wd
Posts: 1167
Joined: Fri Oct 27, 2006 7:32 pm
Location: Waikikamukau

Post by 97k15004wd »

Speeder wrote:I saw the watermarks, they were there. They weren't very transparent, and made it hard to see what was on the pictures. They aren't there now. Probably a Photobucket thing. I wouldn't worry about it.
Yeah, they are gone now. Couldn't see the pictures very well at all. Well, the pictures look good now. I'll bet you are right.

Chevy 97
Posts: 1077
Joined: Tue Jan 24, 2012 1:19 pm
Location: 97 ECSB K1500 6.3L 4L80E 14 bolt SF Hydro Boost, Headman Ellite Headers, 140 amp alt.

Re: 95 GMC

Post by Chevy 97 »

I finally got around to doing some work on the Truck. I finally removed the box. I will have to post pictures when I get them on my computer. My next step is to strip all the things off the 1 ton, so I can use on this truck and a project for a later day. I cannot remember if I mentioned, but I had to check for myself about putting the 9 1/4 front diff in my half ton. unless you put a lift kit on the truck, you cannot do it stock. There is just not enough room. with having a 3/4 ton setting in my shop, I can see the difference with my own eyes. Eventually I would like to change frames. I have all the parts needed. I would keep my 383 in this swap, it really is not bad for towing. There is always room for more hp and torque, but this 383 really has impressed me. I am thinking my timing is up a bit to much. I start pulling hard the engine starts to ping. I may just add octane booster, like I did with my 396 when I towed. The compression was a bit higher on the 396.

Post Reply