88GMCtruck's never ending 88 GMC build thread

88GMCtruck · Oct 5, 2016

Biggershaft96 said:
Sorry if this sounds like a stupid question but how will the 454 harness work with a mpfi setup? I thought the 454 had 8 seprate injectors and plug ins as opposed to the single plug in for mpfi? Are you going to buy a new engine or just find the vortec upper half?

The vortec 454 motors are MPFI just as the 4.3, 5.0 and 5.7 smallblocks are. MPFI = Multi Port Fuel Injection, as in there are multiple places the fuel is injected. The difference between the 454 and the small blocks is the 454 uses regular injectors, and the small blocks use a spider injection system with 8 pop-it nozzles at the port or in the case of the upgraded spider assembly an injector at each port off the spider.

My engine is already a vortec - the block and heads are correct for what I need. It currently has an edelbrock dual plane and TBI on top of it, I'm going to remove that and put the vortec 454 manifold and injectors in its place.

Once done the truck is going to look like it's a OEM 98 454 truck under the hood.

Christian Steffen · Oct 5, 2016

88GMCtruck said:
detroit locker does as well.

Just curious what you don't like about the detroit? Either way looks to be a fun project, good luck.

88GMCtruck · Oct 5, 2016

Christian Steffen said:
Just curious what you don't like about the detroit? Either way looks to be a fun project, good luck.

It's pretty aggressive on the street, just makes for a less enjoyable time driving it

Biggershaft96 · Oct 5, 2016

Im an idiot dont mind me lol. I thought this still had the stock tbi 350. This is gonna be sick man.

Christian Steffen · Oct 5, 2016

88GMCtruck said:
It's pretty aggressive on the street, just makes for a less enjoyable time driving it

Alright thanks. I have considered putting a detroit in my truck from time to time, but if that's the case I'll probably avoid it. It really isn't all that often that I'd need it anyway.

88GMCtruck · Oct 20, 2016

Welp, trying to get this project rolling, going to start out doing some of the things I can without tearing the truck down and rendering it unusable just yet. Particularly I don't want to rip the suburban apart till I can have the truck apart and ready, cause once I take things apart I have to store parts and it's a boat anchor to move.

Anyway, during all this, I was researching new tires, measuring offsets, looking into axle combinations between 6 and 8 lug... for the time being I settled on the PY0s and 8-lug. So I decided instead of tripping around the PY0s I would play around with them, did a bunch of measurements etc, and got out the stripper and have a little party.

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Got the clearcoat off them and gave them a nice hand polish. Damn I love me some polished aluminum.

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Now with the wheels ready to go, I figured new tires were a good idea, so I could pull the old wheels and tires off and craigslist them to re-coup some cash... Was doing my research and low and behold, they were on sale... Stay tuned!

Cokeman95 · Oct 20, 2016

Wheels turned out nice. Did you use aircraft stripper or something similar? Excited to see updates on this truck again.

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SlowZ71 · Oct 21, 2016

Wheels look great! I helped my friend sand down some Alcoas and polish them to a mirror shine on a Volvo tractor he is selling . Takes a lot of work but they sure do look great when all done!

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88GMCtruck · Oct 21, 2016

Cokeman95 said:
Wheels turned out nice. Did you use aircraft stripper or something similar? Excited to see updates on this truck again.

Sent from my SAMSUNG-SM-G900A using Tapatalk

Yup, aircraft paint stripper and the a hand polish on them.

88GMCtruck · Oct 21, 2016

Got all 4 shined up last night.

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Then spent some time with the tire spoons scooping these bad boys on the wheels. I decided to get the Cooper Discoverer STT Pro in 315/75R16. Read a decent amount and they seem to have good reviews.

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New tires VS old tires. The Mickey Thompson MTZs served me well. I managed to get about 55k miles out of them. I probably would have ran them a second time but I've started growing fond of coopers after running the Discoverer ST Maxx on the dually.

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And, yes, they are on the truck. It was 10PM when I finished, so you'll have to wait for daylight picts :lol:

88GMCtruck's never ending 88 GMC build thread

88GMCtruck

I'm all 8-Luggy!

Christian Steffen

I'm Awesome

88GMCtruck

I'm all 8-Luggy!

Biggershaft96

Cant Getrite

Christian Steffen

I'm Awesome

88GMCtruck

I'm all 8-Luggy!

Cokeman95

I'm Awesome

SlowZ71

OBS Enthusiast

88GMCtruck

I'm all 8-Luggy!

88GMCtruck

I'm all 8-Luggy!

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