Gary Hart's 1951 GMC Half Ton - now with Teaser video!

[dieselgeek]

Re: Gary Hart's 1951 GMC Half Ton

WOW


DG who builds a good Jimmy I6 hot rod motor? I have a 57 302 and I'm a little nervous as the are getting a little hard to come by.

This is the first one I've been involved with - but I've seen them in a handful of fast bonneville cars. Was it the McMeekin family that ran one in a 3rd gen F-body? there was a gorgeous roadster pitted next to us at SW 2010 who had a MFI'd Jimmy engine with a big Procharger... I have video of it somewheres...?

[ch1ll]

Re: Gary Hart's 1951 GMC Half Ton

WOW
DG who builds a good Jimmy I6 hot rod motor? I have a 57 302 and I'm a little nervous as the are getting a little hard to come by.

This is the first one I've been involved with - but I've seen them in a handful of fast bonneville cars. Was it the McMeekin family that ran one in a 3rd gen F-body? there was a gorgeous roadster pitted next to us at SW 2010 who had a MFI'd Jimmy engine with a big Procharger... I have video of it somewheres...?

They raced them in 1/4 mi dirt modifieds in the early to mid 60's also. Just not alot of those guys still around doing the work.
Saw one in a 60's Anglia gasser also.
Seems whomever has the knowlege and the skills is/are hoardish and cultish

[dieselgeek]

Re: Gary Hart's 1951 GMC Half Ton

Another week, and more progress on the Half Ton Turbo Jimmy!







Lookie! EFI wiring has begun!!

[SuperBuickGuy]

Re: Gary Hart's 1951 GMC Half Ton

pretty stainless... who cut your flanges?

[67pete300]

Re: Gary Hart's 1951 GMC Half Ton

That's a long glasspack. Any idea what it is?

[Darren N.]

Re: Gary Hart's 1951 GMC Half Ton

My goodness, that sure is nice work and those welds... so pretty! ;) lol

I really dig keeping the old-school colours on the engine, looks very classy. The turbo and EFI take this truck to a whole new level of awesomeness.

I'm really looking forward to the updates

[Huskinhano]

Re: Gary Hart's 1951 GMC Half Ton

Modern engines are cool but there's just something about a vintage engine with a few modern updates. That's way cool! This is one project I wish I could go see. Nice work Gary! and dieselgeek ;D

[ch1ll]

Re: Gary Hart's 1951 GMC Half Ton

Damn, hate to be the smartass here, but them look like stainless milk pipes out of the barn!

That truck is supper bitch'n, and I am jealous

[GH]

Re: Gary Hart's 1951 GMC Half Ton

ch1II, you are right all the stainless came from places that do food processing equiptment. Some of it very cheap out of the scrap bin. The muffler came from Speedway Motors, it was a header muffler that I cut off the flange and welded the 2-1/2" OD stainless turbing to. What do you think of the throttle body exhaust cut out that will be cable operated from inside the cab. I hope it doesn't get too hot for the aluminum throttle body.

[squirrel]

Re: Gary Hart's 1951 GMC Half Ton

I thought that's what that was.... yeah, hope it lasts. If the throttle plate itself is aluminum, it's possible it could get hot enough to melt?

Might want to plan on running a normal block off plate that you unbolt. I expect the exhaust will be relatively quiet when you're not "on it" with the "go pedal" "to the wood", so you could probably get by going for a cruise with it open.

[CTX-SLPR]

Re: Gary Hart's 1951 GMC Half Ton

Guy is doing something simular with a Crown Vic TB on the TurboBuick board though his is actuated by boost pressure using a wastegate diaphram. Not sure how far down the exhaust your's is but he's is mounted where the cat used to be on a Turbo Regal.

[ch1ll]

Re: Gary Hart's 1951 GMC Half Ton

Good to know some farmer somewhere's ain't sit'n in the barn using a pail and cuss'n y'all :D :D

I'm pretty sure your going to find out right quick how that throttle body exhaust cutout works but I'm not going to speculate ;D

I found a thread on inliners.org where guy were talking about using longer rods and lighter custom pistons for more hp at a higher rpm in a 302 jimmy. Will post link if any one is interested, surfing there next.

[DanStokes]

Re: Gary Hart's 1951 GMC Half Ton

There are several makers of those flanges but the ones we used were from Ladish - Tri-Clover is the series. Felker Brothers makes a similar product but they are not interchangable (or weren't the last time I messed with 'em).

Dan

[dieselgeek]

Re: Gary Hart's 1951 GMC Half Ton

Today's update from Gary:

The cut-out is done with the exception of hooking up the cable. The turbo/intercooler/throttle body is all plumbed up including the BOV. I am ready to start running the fuel lines and wiring.

[SuperBuickGuy]

Re: Gary Hart's 1951 GMC Half Ton

nice work on the tubing.... although it brings up bad memories of when I had to work for a living (I used to build commercial stainless food prep equipment). ;)

seeing the tube go through the surface rust - I thought "I wonder what some archeologist will say in five thousand years when all he finds is those tubes." Probably "it was used in the worship of salt at a prehistoric salt lake bed." ;D