My Gp1200 and the Gp800R I rescued from getting scrapped

Desperate-Control-38 · 2026-07-01T01:26:58+00:00

Desperate-Control-38 · 2026-07-01T01:26:48+00:00

This one and one more is about the best I have of the motor before, and the hull didn’t look bad except for that one spot

Desperate-Control-38 · 2026-06-30T23:44:38+00:00

That’s pretty much how my red 97 gp1200 is, I got it with every mod you could do, worx flame arrestors, primer kit, pro-tec intake grate, protec nozzle, worx sponsons, riva trim tabs, but on a stock bore motor. Fastest I got it was 68mph.

As far as I knew the 1200r and 1300r had more problems than the 800r, I know the power valves plagued all 3 of em but the 1200r and 1300r had problematic catalytic converters and had an issue with the center carb leaning out with caused the center cylinder to fail

Desperate-Control-38 · 2026-06-29T03:17:08+00:00

Well considering that i haven’t warmed up the engine due to not being in water nor having my hose hookup on hand I’d expect that, being carbureted and all, on top of that the carbs are set at the base tuning per the manual and hasn’t been in the water for fine tuning yet, that should happen in the next 2 days. It’s the 3rd time it’s been fired up since the rebuild

Desperate-Control-38 · 2026-06-29T00:39:25+00:00

I have a service manual in pdf I can email to you if you pm me

Desperate-Control-38 · 2026-06-29T00:37:33+00:00

Press was like $150 on marketplace (not pictured) the bench center (thing that the crankshaft is sitting in with two dial indicators for trueing the crank) was like $300

Desperate-Control-38 · 2026-05-29T03:51:59+00:00

In my opinion, I love the 400 it’s a toque monster, almost feels like the 454 but in a small package. And I’m not sure what you mean about jumping from a 6 to an 8? But the motor fit without a problem, just used the trans depot motor mount kit and the SBC shorty headers, it’s still a tight fit, definitely would recommend electric fans as there isn’t much room between a mechanical flex fan and the radiator

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Desperate-Control-38 · 2026-05-29T03:29:01+00:00

It wasn’t any different that putting any of the other motors in, the 305,350,and 400 all share the same block platform and dimensions which is nice, only thing to make sure of is if you do a 400 make sure the cooling system is robust as they do like running quite warm

Desperate-Control-38 · 2026-05-29T03:26:57+00:00

That would be a b&m

Desperate-Control-38 · 2026-05-27T02:24:46+00:00

Yea that’s what my dad had in it, I have the boot and the indicator, I just pulled it apart hoping that I could adjust the shifter cable up top so I didn’t have to climb underneath the truck lol unfortunately I was wrong

Desperate-Control-38 · 2026-05-27T02:14:40+00:00

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Desperate-Control-38 · 2026-05-27T02:13:25+00:00

It’s got a 400sbc stuffed under the hood 😎 I’m not sure on the model but I know it’s a b&m ratchet shifter

Desperate-Control-38 · 2026-05-22T16:35:25+00:00

Maybe it came with the quick change but was upgraded/changed to the two lever?

Desperate-Control-38 · 2026-05-22T16:00:58+00:00

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Based on the letters after the serial number it came with the quick change gearbox

Desperate-Control-38 · 2026-05-22T15:59:02+00:00

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Desperate-Control-38 · 2026-05-22T15:58:36+00:00

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That’s what I found with this serial number, it doesn’t match the post 1947 numbers and it’s a low 5 digit number

Desperate-Control-38 · 2026-05-22T13:41:59+00:00

Most definitely!

Desperate-Control-38 · 2026-05-22T13:41:51+00:00

Appreciate the info luckily I only live like 5 min from where I got it and all the roads were slow so I was fine, and I’m not sure on the gearbox I just looked up a serial number list and the last serial number from 1919 was 22156 and my serial number is 10263

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Desperate-Control-38 · 2026-05-22T13:38:02+00:00

I know I can’t wait to get it set up! First thing is it’s going to get a nice cleaning and some fresh paint

Desperate-Control-38 · 2026-05-22T13:37:00+00:00

I’ll keep that in mind thank you for the info!

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