Towing with sbc 350!!!

[dAT OBS]

Bought my '94 GMC k1500 (3.73 gears, tow package) in '16, spent 3 years trying to tow with it, making improvements constantly, 2- 4" direct air intakes, MSD adjustable timeing control, dual exhaust (no cats), Fastchip. Nothing worked too good, kept cracking exhaust manifolds because I liked blasting up mountain passes in 2nd up to 4,000 rpm. So, replaced it last October with a 383 stroker. Now that is an engine for towing. Can tow a 5,000 lb travel trailer in 4th, has oodles of torque. Right now Old EFi is tweaking a chip for me using TunerPro RT. Got the remanufactured engine from S&J engines in Spokane for $2300 with roller cam, can't beat that. Now I can go as fast as I want when I want, but always keep it around 65 mph for the sake of the trailer tires and safety.

Have to love the nice 383 especially roller cam

 

[1997]

Bought my '94 GMC k1500 (3.73 gears, tow package) in '16, spent 3 years trying to tow with it, making improvements constantly, 2- 4" direct air intakes, MSD adjustable timeing control, dual exhaust (no cats), Fastchip. Nothing worked too good, kept cracking exhaust manifolds because I liked blasting up mountain passes in 2nd up to 4,000 rpm. So, replaced it last October with a 383 stroker. Now that is an engine for towing. Can tow a 5,000 lb travel trailer in 4th, has oodles of torque. Right now Old EFi is tweaking a chip for me using TunerPro RT. Got the remanufactured engine from S&J engines in Spokane for $2300 with roller cam, can't beat that. Now I can go as fast as I want when I want, but always keep it around 65 mph for the sake of the trailer tires and safety.

thinking that's my next engine. What about the trans? How's it standing up?
Do you have ballpark specs on the 383?

 

[Jordan Roberts]

Just posted these in the members truck section but I'll drop them here too.

My new tow rig. 2000 3500 sierra with a 350ci from the factory and 198k miles. Practically a base model with champaign paint but this things a beast!

4.10's, air shocks, lights everywhere and has what i was told to be a built 700r4

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[stutaeng]

Just posted these in the members truck section but I'll drop them here too.

My new tow rig. 2000 3500 sierra with a 350ci from the factory and 198k miles. Practically a base model with champaign paint but this things a beast!

4.10's, air shocks, lights everywhere and has what i was told to be a built 700r4

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Nice looking truck! Someone swapped a 4L80e for 700R4?

 

[Jordan Roberts]

You know it wouldn't be my first idea but he ran this truck for his transport business and it will pull the house down in over drive

 

[Supercharged111]

You know it wouldn't be my first idea but he ran this truck for his transport business and it will pull the house down in over drive

That is not how a 700R4 would act.

 

[dAT OBS]

Nice looking truck! Someone swapped a 4L80e for 700R4?

That's what I about to ask!!!

 

[stutaeng]

That's what I about to ask!!!

TH 350 ≈ 700R4 ≈ 4L60e << TH400 ≈ 4L80e,

where "≈" is "approximately"

 

[L31MaxExpress]

TH 350 ≈ 700R4 ≈ 4L60e << TH400 ≈ 4L80e,

where "≈" is "approximately"

My opinion on GM transmissions..
700r4~4L60E<<200-4R ~ TH350 <<<TH400~4L80E<4L85E<<<Allison 1000.

Reason I rate the 200-4R better is it is known to hold alot of power behind turbo buicks

 

[Erik the Awful]

No experience with 200R4s, but my understanding was that once you replaced the input shaft and drum it was stronger than a 700, but without that it was weaker. A quick google search bears this out: https://gearstar.com/200-4r-transmission-the-holy-grail-of-power-fuel-efficiency/