Vortec 4200 turbo potential? - ModernCamaro.com - 5th Generation Camaro Enthusiasts
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Old 04-17-2011, 07:11 PM Thread Starter
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Vortec 4200 turbo potential?

I've been looking at these and they look like they have some serious potential. For those who don't know, it's a 4.2L, DOHC, 24V I6 produced by GM. The block is aluminum with steel sleeved cylinders. They are extremely common as they power a lot of GM's trucks and SUVs (we have one in our buick rainier). Factory output ranges from 270 hp to 291 hp / 277 lb-ft torque. With this in mind, check out a few of the builds already in existence:

Canadian built classic pickup running on megasquirt. This guy did some head work, but his result of 475 rwhp at 10 psi is seriously impressive.


And a build/swap thread of one being dropped into a mkIII supra and boosted
http://www.supramania.com/forums/sho...s-4.2l-I6-Swap

I can't find much else out there aside from a few pictures of heavily built drag cars. I'm considering a turbo 4200 swap as a future project... it looks like it can deliver cheap power quite readily!

1997 BMW 540i 6-speed
1996 BMW 318i Convertible (slow)
1985 BMW 325e 5-speed turbo (blown up, in the process of a motor swap)
1999 Oldsmobile Bravada (parted)
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Old 04-17-2011, 07:19 PM
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lol, i'm pretty sure the only difference between this and my chevelle's engine is aluminum vs steel block.. othewise its still a 4.2 I6

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Old 04-17-2011, 07:23 PM Thread Starter
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Quote:
Originally Posted by thedcorvette View Post
lol, i'm pretty sure the only difference between this and my chevelle's engine is aluminum vs steel block.. othewise its still a 4.2 I6
no, your chevelle's I6 is ohv and not nearly as efficient - it pushed half the power the vortec does when both were factory fresh. I have no idea how beefy the internals on the old straight sixes are either.

1997 BMW 540i 6-speed
1996 BMW 318i Convertible (slow)
1985 BMW 325e 5-speed turbo (blown up, in the process of a motor swap)
1999 Oldsmobile Bravada (parted)
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Old 04-17-2011, 08:28 PM
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I would pass on it......alot of work for little return

2005 CTSV BLACK LS7 Clutch/Flywheel/Slave, Tick Speed Bleeder, Tilton Clutch MC, RevShift Bushings, Domestic V8 Solutions (shifter, 8.8 Diff conversion, srut tower braces, sub-frame connectors), SLP cats, no cags, xpipe, bullet mufflers, Volante, iPod dock, G-force tune; 379hp 381tq.

Killing 5th gens like it is my job.
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Old 04-18-2011, 06:57 PM
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I had an idea rattling around in my head (one of many) involving one of these motors and a '67 - '72 Chevy/GMC pickup. After doing some research, I think the simplicity of an old school pushrod I6 would be preferable since my objective would be the aesthetics of an I6 over power potential (it would be more cost effective to build a small block for power potential).

Don't get me wrong, if you have the money to build a turbo charged DOHC I6, it would make for one hell of a cool setup.

Scooba Steve
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Old 09-19-2014, 03:43 AM
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This posts is*very*informative.*Thank you!

Last edited by Kakobbbdere; 10-15-2014 at 06:18 AM.
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