68 GMC 4x4 Pics
 

Forced inside by Ike, so I decided to try and post some pictures. Added a couple of the GMC 305 V6 since most people are not familiar with them. A lot of folks don't like them, but I do. I had custom pistons made to give me 9:1 compression and installed GMC Magnum heads. The Magnum heads have 2.25 intake and 1.875 exhaust valves for pretty good flow. Desk top dyno says it is around 250 hp with 300ft-lb at 2000rpm. I switched from 4.56 to 3.73 gears with posi front and rear. The new front Dana axle has power disk brakes. I installed a 2.5 inch soft ride lift all around for looks and comfort. Got some buddy buckets redone on the inside, otherwise a plain stock interior.
I am now finishing up a NV4500/NP205 combo to be installed in a few months. Plan to remove the cab for this job, so I will add a Vintage Air conditioning system too. My long term mod is a new engine. I am currently building a 454 V6 from a 478 V6. The 478 uses a big truck crank and flywheel, but a 305 V6 crank will fit and allow using the original flywheel. The cranks have different strokes, so that is where the 454 ci comes from.

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Tuff lookn truck!!!

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Very nice, I like it!

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Nice to see a unique engine in one of these.Even though the V-6 was offered most decide to go with a small block.I like my inlne but the V is certainly different.I didn't5 know you could build a 454 from the factory parts though.

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Looks great Erl....yours has always been one of my favorite trucks on the board.

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Awesome truck! Great engine!

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i dont like step sides at all but that one looks TOUGH !!!! and the engine your building sounds like a wild concoction of parts. lol

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What a nice truck.Everything is just right.

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that is to cool i love it

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on you tube there is a v12 gmc engine like this v6, i dont know if is factory or custom built using 2 of the v6 engines. it is a neat video!!

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nice truck... probably what mine look like when newer (fleetside though). Any pics of the inside and those tow hooks? I need to know which way they are supposed to twist...

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Now you know the guy down at the gas staion or the parts store ain't gonna believe that he's looking at a 454 V6. You'll leave em scratchin their heads...:lol:

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Nice Truck. How about some specs on those tires? - They look nice and aggressive.

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post that you tube video

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that truck just looks right. beeeeeuatiful. period.

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Nice truck Great setup.
Ron

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That is a kick ass truck.

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They twist to the inside of the frame rails with the opening in the hook to the back of the truck from the factory.

What distributor did you use to get the HEI?

Nice looking truck, the mods are geat and it will still look stock. With the torque you develope the 3.73 change was a good idea.

How much shorter is the 454 stroke from 478? Off the top of my head it seems like maybe 1/4".
What rods and pistons will you use?

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That is a great looking original truck!

Nice work, and I personally love the 305!

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You should top off the engine with a set of the plaid valve covers, just to get more second looks.

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NICE! I like the GMC V6s. I can't even imagine how cool the 454 V6 will be.

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Very nice. I'm not a step side fan, but that one looks great.

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That is a favorite truck of mine!

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Great looking truck, Erl! The V6/NV-4500 combo sounds interesting. You used 427 pistons for the 9.0:1 compression in the 305, right?

Bob

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OH MAN I LOVE THAT TRUCK!!! I've got a 401 block and set of 351 Magnum heads that I'm dying to put in the something! My hat goes off to you going down the road less traveled with the V6!