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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Did not get a chance to get into the engine bay, but we are titled and tagged! NC weighted 10k trailer.
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    If I have the diesel gauge cluster, I’d need the harness from a 454 truck?
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    From memory, it idled pretty well and started easily. Under load it would choke and backfire sometimes, I think these are symptoms of an over-rich carb tune. I got about 7 miles from the sellers house when it died while driving once and I got it restarted. The next time it died 1m later, it felt...
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Ah nice, that 502 looks built for towing. Regardless, I'll still need to figure out the wiring to the gauge cluster
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Yeah, the body and frame are in fantastic shape being a southern truck it's whole life. I guess another question would be which 454 version would make the most sense for a .30 over/cam/carb? Or is that what anyone would throw at a block and the gen doesn't matter?
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Trying to match from memory since I will be seeing the truck next on the coming Monday: It looks a lot more like the Mark IV 454 in these pictures https://www.autoevolution.com/news/mark-iv-ls6-454-a-look-back-at-one-of-the-muscle-car-golden-age-s-most-impressive-v8s-229887.html Rather than...
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    I have been looking at 6.5T crate engines as a backup since that would be an easier replacement, maybe a better 454 done right. It does come down to the state of the fuel system. I ran the carfax out of curiosity and it's lived it's whole 4 owner life in North and South Carolina so that explains...
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Yeah, I'll have to start with block numbers and go from there. This definitely seems like it'll need some legwork from myself to tie a bow on it.
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Got the VIN decoded
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Nah, not that I can tell. I don't think PO was the swapper, they just threw a carb and MSD distributor at it.
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    A 454 with cam and .30 bore, that's about all I got till I get more pictures.
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    When I was looking at the engine bay picking it up, the carb definitely had Holley embossed on it. It was shiny too, like this one: https://www.holley.com/products/fuel_systems/carburetors/street/parts/0-80508S
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    You know, I have a thought now. The 454 in the truck currently is an orange block and valve covers. I'll have to get the serial to confirm, but I wonder if it's not a truck based 454 swap? I mean, anyone can rattle can orange an engine in a swap context, but still it's interesting. Did the...
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Hmm yeah that looks like something I’ll need to get pictures of as soon as I get it back. If that is still intact, I wonder if it’s a good candidate for a Holley Sniper EFI? American V8s are not my forte so I have a lot to learn here. From the ad: 1993 chevy 3500 (454) Bored .30 over...
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    I’ll have to get my hands back on the truck to know for sure so it’s all speculative at the moment. From my conversation with the seller, it’s a 454 bored .30 over, mild cam, new distributor and wires, new spark plugs, Holley carb (did not get the model), with an aftermarket tach on the dash...
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Yeah, this is true. I haven’t been around it long enough to figure out if they feed into the engine in the same way or not. What would be the proper way to run a dual tank setup?
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    The more I look into the symptoms of a bad or very mistuned carburetor, the more I think that’s the culprit.
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Ah, I’ll need to check the caps when I see the truck next. From what I remember, the bed tank was a solid metal. Owner said it was off his old hot rod, akin to a moonshiners tank, but a box. I’m kicking myself for not getting more pictures but it really dove right into trouble. Hoping to get...
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    I haven’t had a chance to diagnose since it’s at the shop but that might be a possibility. Would a poorly vented tank cause sputtering throttle and backfires? I do know it it can use gas in the regular tank and it has a 2nd tank in the bed that the owner used most of the time. He said it was...
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Yeah, I think there’s going to be a slight headache in getting this 454 running right in the 6.5 turbo truck. Browsing a few threads on it, it seems like a less common but not impossible swap. It has been running in a 454 configuration for a long time though, so the swap has to have been done...
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Well, I’m one of y’all now. Truck did not make it 7 miles post purchase and needed a tow. Likely bad gas and a needed carb tune. Best I can tell, this is a diesel chassis with a 454 swap, cammed and with a hot carb.
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Thanks all for the insights, I think I'm settled on the 3500 cclb now. I'm going to spend some more time on the forums reading about the platform and hopefully close on one this year.
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    Yeah, this is a good point. It's not long before I'll have a tool chest, quick jacks, another set of rims and tires, etc.
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    I'll add those to my search list, I had browsed this bracket before and found a lot that were listed for too much with 300k+ miles. Likely due to the fact that these are highly favored by contractors. A SRW 2500 would be easier to live with for sure and it has the upgraded brakes I'd want too.
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    Thinking GMT400 3500 Dually for Track Day Towing, Thoughts?

    That makes a lot of sense, I could see your average home owner skipping out due to that. Thankfully the paddocks I'm headed towards are designed with full size race car haulers in mind haha.

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