95 GMC

Performance modifications, tips & tricks

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Chevy 97
Posts: 1076
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.

95 GMC

Post by Chevy 97 »

I bought a 1 ton truck for parts. Basically needing a new hood since I messed up mine. When I first looked at the truck I thought it was a 96 by the dash, then I remembered a 95 has the same dash as a 96. I popped the hood, this is when I realized it was a 95, it has a TBIâ„¢ 454 set up and not a vortec. Yes I am a little disappointed that it wasn't a vortec. But it is not the end of the world that I know of. I think the TBIâ„¢ engine block is a GEN 5. I will have to do some investigating to see if this engine has a hydraulic roller or not. Also see if the engine has the six bolt front cover.

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

Post by 97k15004wd »

Cngrats on the new truck!!

Chevy 97
Posts: 1076
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 »

Well, I did some research, at least with the gen 5 engine it has a 4 bolt main block, I will see for sure later. The heads are not so good, hydraulic cam, but that can be upgraded with the heads. The front timing cover is a 6 bolt which means and fingers crossed that the vortec front cover will fit so I can use the crank sensor that I will have to install. also, the dampener will need to have some metal removed or just buy one for a vortec 454. Now I just need to put money away for this just like I had done for the transmission. Start collecting parts.
I am disappointed that it is not a vortec. I would have everything needed for the swap. Now I will need an intake, a different throttle body. Not sure if the radiator that I had purchased will cool the 454. Even though it is a three core rad. It isn't as tall as the 454 radiator is. It would be cool to win the lottery right now, then I could take some time and actually rebuild this truck. The fun part would be to swap in a better computer system that what the TBIâ„¢ has. than I can find and put in another 4L80E with a 241 transfer case, that is not with the truck either. But I am getting a head of myself with wishful thinking. One thing I did say when I first started on here was to see what the actual difference between the 9 1/4 front diff, and the 8 1/4. I now have both. Just the one is a 95. I think there was a case upgrade, making it a little beefier in spots.
I have gotten a lot of useful information off of here and another site that I cannot get on anymore. Thanks for all the wisdom and support. The 95 would be a good candidate for the SAS swap. I am stealing the hood for my truck for sure. This truck has a flat deck on it.
The one question, that plaques me is, will the brackets off my small block fit on the 454. such as A/C, power steering, and the alternator? This truck has the older style A/C unit.

97k15004wd
Posts: 1158
Joined: Fri Oct 27, 2006 7:32 pm
Location: Waikikamukau

Post by 97k15004wd »

Chevy 97 wrote: It would be cool to win the lottery right now, then I could take some time and actually rebuild this truck.
Brother, that is the truth!!

It sounds like you have some cool plans - now the time and the money come into play. All of your projects are well thought out and I enjoy seeing your builds. Very much looking forward to this.

Chevy 97
Posts: 1076
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


Here is the truck I bought.

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

Post by Bushwacker »

I like the trailer!! Lol

97k15004wd
Posts: 1158
Joined: Fri Oct 27, 2006 7:32 pm
Location: Waikikamukau

Post by 97k15004wd »

Looks like a farm truck - I like it.

1999 Tahoe 4x4
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Joined: Sat Dec 15, 2007 2:00 pm
Location: Torrance, CA

Post by 1999 Tahoe 4x4 »

Nice find! Congratulations.

You seem to be set against TBIâ„¢ and I'm sure you have your good reasons.
But to me the simplicity of TBIâ„¢ is just so appealing.

Chevy 97
Posts: 1076
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 »

1999 Tahoe 4x4 wrote:Nice find! Congratulations.

You seem to be set against TBIâ„¢ and I'm sure you have your good reasons.
But to me the simplicity of TBIâ„¢ is just so appealing.

Not really, I have the EFI Live Scan/Tuner that works with OBDII set ups. It is easier for me to swap a tune into a 0411PCM. I still need to get a transmission. This truck is all set up for a clutch, so a nice 5 speed would do, plus the NP241 transfer case. Then again, maybe just putting a carb on top a new intake with a holley carb. Get an HEI distributor too. I like the fuel injection for going in the mountains, because it adjusts your air fuel ratio.

Chevy 97
Posts: 1076
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 was told this truck would die on you and it was very hard to get started again. I see someone has changed some of the wiring, not really sure how bad it is butchered.

Chevy 97
Posts: 1076
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

Speeder
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Location: 2015 Tahoe 2WD 5.3L 6L80E, 2008 Colorado work beater, 2003 Dodge Dakota pro-touring project

Post by Speeder »

It's been a while so I may be wrong, but as I recall the intake ports on those mid-90s 454s are so small you can get your thumb stuck in one. I'd plan on replacing the heads if you want power out of this. GM has a bad habit of sabotaging stuff they no longer want to make, like how they want to make FWD sedans but not RWD sedans, so when forced to sell them they overpriced them and limited available options to all of them whether you wanted them or not.

Chevy 97
Posts: 1076
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

Chevy 97
Posts: 1076
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

I have the bellhousing, no pressure plate or clutch, the flywheel is rusted, will need to be turned or get a new one.

Chevy 97
Posts: 1076
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

I still have the crossmember, along with both drivelines.

Chevy 97
Posts: 1076
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

Chevy 97
Posts: 1076
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 »

What has changed here, I want to edit out some of these pictures that are way to large. I really haven't changed anything. Also why are these pictures showing up so large?

Chevy 97
Posts: 1076
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 was at my brother in laws. He got his old 3/4 t back.
The 454 is knocking. The rear diff was rebuilt. I think he said transmission was done too. The body is in way better shape then the 95. I will license this truck, strip everything off the other truck. It is a 2000 crew cab short box.

Chevy 97
Posts: 1076
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 »

Doing some research. I have read that a six bilt front timing cover will bolt up to a Gen V block. I pulled out the 454 yesterday. It has the same timing cover as the Mark IV big blocks. Since I already have a single rear main seal, would my oil pan seal with the 6 bolt timing cover.
The other truck I got, has the Gen VI block. I will have to see what is damaged on that block.
I know the hydraulic rollers from a Gen VI won't work in the Gen V. You have to get the retrofit Roller Lifters. Untill, I open this block up, I do not know if the block is drilled for the cam retainer. Supposedly it is. I shall see.
It is just the oil pan to timing cover, I have not gotten a definate answer on.

Hog
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Location: 1997 Chev ECSB L31 350 1997 GMC Sierra SLE RCSB, Ontario

Post by Hog »

The GEN 6 BBC 454 that was used in the motoholmes and Kodiak trucks used an alkuminum front timing cover that holds the Crankshaft position sensor used to work with the 24x reluctor wheel. The RPO is L21, whereas the 'normal" LD Vortec 454's carry rpo L29. The L21 is a Vortyec 454 that uses a 24x reluctor wheel and specialized crankshaft position sensor and the dual 80 pin connectors PCM that uses Cam Near Plug(CNP ignition) and Electronic Throttle Control(ETC or Drive By Wire=DBW). The L21 CKP reluctor wheel was used as the basis for the GEN II LT1/4 CNP?ETC swaps with the 0411 PCM. If you use a SBC crank machined with a BBC front crank hub, you can use teh L21 reluctor wheel directly.

I have some info posted somewhere here. Let me look.

peace'
Hog

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