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01-30-2015, 01:07 PM | #1 |
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Location: Hope, AR
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93 C1500 to 4.3L to 5.7Engine Swap
Could I swap my 1993 4.3 to a 1996 350 without upgrading the 4l60E tranny or beefing up the front end? Would I run into rear-end problems? I found a 5.7 with 18k miles and just wanting to pep the ol dog up. Thanks
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1993 OBS Chevy SCSB , 88k miles, 4.3 Auto (waiting on a 383 Stroker) "AR-15, Its like Barbie for men!" - Mark Reed |
01-30-2015, 01:29 PM | #2 |
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Re: 93 C1500 to 4.3L to 5.7Engine Swap
The transmission is the same for the 4.3 TBI v6 and the 96 Vortec 350. 4L60E. So shouldn't have any problems there.
The front end I don't know though if they use different springs to compenstate for the weight difference between the V6 and v8. You also have to think about what you're going to use to fuel it. You could get a Vortec to TBI intake manifold, or a carb intake for a Vortec engine and a TBI adapter, and run the TBI on the engine. Or convert to carb depending on your states emission laws. Or do a more complicated swap of running the Vortec 350's fueling system. Other items to consider with the 350 vortec is it's lack of water bypass hole in the front of the block, the different serpentine setup and crank reluctor for the crank positioning sensor, and the plastic timing cover that doesn't have a timing tab. An easier swap would be an 88-95 350 TBI, but you are sacrificing power there compared to the 350 vortec and it's factory roller setup. |
01-30-2015, 01:54 PM | #3 | |
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Re: 93 C1500 to 4.3L to 5.7Engine Swap
Quote:
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1993 OBS Chevy SCSB , 88k miles, 4.3 Auto (waiting on a 383 Stroker) "AR-15, Its like Barbie for men!" - Mark Reed |
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01-30-2015, 02:00 PM | #4 |
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Re: 93 C1500 to 4.3L to 5.7Engine Swap
yes it is possible, actually a very popular swap to do.
You'll need a set of Vortec heads, a Vortec to TBI intake manfiold, or Vortec carb intake with TBI adapter. |
01-30-2015, 02:05 PM | #5 |
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Re: 93 C1500 to 4.3L to 5.7Engine Swap
Thank you for the help! And could I find the fan shroud for the v8 at any u-pull-it or somewhere like that? And I might add the dual electric fans to help with the rotating mass of the big single fan.
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1993 OBS Chevy SCSB , 88k miles, 4.3 Auto (waiting on a 383 Stroker) "AR-15, Its like Barbie for men!" - Mark Reed |
01-30-2015, 02:34 PM | #6 |
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Re: 93 C1500 to 4.3L to 5.7Engine Swap
I'm not sure of differences between the two fan shrouds to be honest. Maybe someone else will chime in.
But if you have the budget for it electric fans are definitely worth it in my opinion. I'd like to put a set in my C1500. |
01-30-2015, 02:52 PM | #7 |
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Re: 93 C1500 to 4.3L to 5.7Engine Swap
Well the fans are a future deal. I really dont need to swap motors, since the 4.3 is still VERY healthy. but I just really want more getty-up ya know? Also, would you happen to know if there is a cabin air filter in these trucks?
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1993 OBS Chevy SCSB , 88k miles, 4.3 Auto (waiting on a 383 Stroker) "AR-15, Its like Barbie for men!" - Mark Reed Last edited by HondaMartin; 01-30-2015 at 02:57 PM. |
01-30-2015, 03:05 PM | #8 |
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Re: 93 C1500 to 4.3L to 5.7Engine Swap
Stock your 4.3 TBI is 155hp and 230trq.
A 350 TBI is 210hp and 300trq So even going with a 350 TBI you'll gain 55hp and 70trq in stock form. That's what I have in my truck a 350 TBI and 5 speed, and it's honestly not that peppy and I'm trying to put a 350 Vortec in mine with a carb swap. But compared to your 4.3 TBI going to a 5.7 TBI it would be a noticeable difference. With the Vortec heads on the 350 TBI block though you would be at more than 210hp and 300trq. There was a very limited production of 96 G30 vans that had a 350 TBI block with vortec heads with TBI as the fuel induction and they were rated at 235hp/340trq. If I remember correctly.
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Current Vehicle: 1992 Chevy C1500 RCSB 350 TBI NV3500 5 speed 10 bolt 3.08 gears 255/60/17 tires on 17 x 8.5 Summit Racing Legend 5's. 2.5 Dual exhaust H pipe Single Chamber Mufflers dumped Past Vehicles: 94 Honda Prelude VTEC H22/5speed, 1999 Pontiac Sunfire Quad 4/5 speed, 1980 Chevy C-10 RCLB 307 SBC/TH350. |
01-30-2015, 03:39 PM | #9 | |
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Re: 93 C1500 to 4.3L to 5.7Engine Swap
Quote:
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1993 OBS Chevy SCSB , 88k miles, 4.3 Auto (waiting on a 383 Stroker) "AR-15, Its like Barbie for men!" - Mark Reed |
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