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68 Chevelle twin turbo 6.0l build

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Old 02-26-2017, 10:17 PM
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Default 68 Chevelle twin turbo 6.0l build

Even though I'm almost done, I thought I'd post this for others to see. When I was looking for ideas, I couldn't find many a-body builds.

Engine:09 Ly6, bought from junk yard w/accessories for $925 (had bad lifter).
Bored .010
manley forged pistons (9.8:1)
molnar turbo rods
arp studs
ported 823 heads
ls9 head gaskets
tick stage 2 turbo cam kit
holley intake

Exhaust:
Headers- ebay 1-7/8 forward (two rear tubes were moved in for steering shaft on drives side, one rear tube moved in for a/c box on passenger side)
Down pipes- 3.5" about 3ft long
3" full rear exit tail pipes

Accessories:
Truck brackets modified to fit type 2 aluminum corvette ps pump
GZ vacuum pump with custom made brackets

Turbos:
BW S366sxe .88 open scroll turbine housing
percision 46 wastegates
a2a intercooler

Transmission:
4l80
pi 3600







Old 02-26-2017, 10:23 PM
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And keeping the A/C, I like.
Old 02-26-2017, 10:29 PM
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Wow gorgeous car! Normally don't see too many FI guys go with vacuum pumps. It'll be cool to see how it does.
Old 02-27-2017, 08:44 AM
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Very very nice work and car. Looks great.
Old 02-27-2017, 09:10 AM
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Beautiful! Power??
Old 02-27-2017, 09:12 AM
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Sexy A body
Old 02-27-2017, 12:38 PM
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Originally Posted by Rob07002
Beautiful! Power??
Thanks Guys!

I'd like to hit the 1K mark and at least run some high 5's in 1/8 mile.I have more than enough turbos as long as the block will hold it. With a SBC 409 on 175 shot I ran 6.20's, so I think it's do-able.

Next couple days I have to finish the exhaust, cold side, new fuel system, and start tuning.
Old 02-27-2017, 03:26 PM
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That looks good, and high 5's shouldn't be too difficult with a good 60'.
Old 03-07-2017, 12:31 PM
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A little update.
I finished everything and took it for a shake down around the block. Everything seems good. Now I need to drive it and let Holley do its thing. Unfortunately, it's been raining for the past three days. I decided to upgrade the fuel system with dual 450's.
Old 03-07-2017, 02:51 PM
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Beautiful car, nice work-I wish I could have used the 4150 style TB, but with the car hat it hit the hood, so I had to use the Edelbrock 90 deg adapter.
Old 09-08-2017, 11:27 AM
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That looks great!

How is the car doing?
If you have a chance can you take some more detailed photos of the engine bay, accessory brackets, header clearance, coil mount, etc. I am working on my 72 TT build and any photos help.

Mike
Old 09-08-2017, 03:10 PM
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nice car! any results ?
Old 09-08-2017, 05:03 PM
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Originally Posted by MN72Chevelle
That looks great!

How is the car doing?
If you have a chance can you take some more detailed photos of the engine bay, accessory brackets, header clearance, coil mount, etc. I am working on my 72 TT build and any photos help.

Mike
It's doing great. Just been street tuning. Throwing some new shoes on it tomorrow. The old ones are getting loss at 110 mph (18 psi). It's been too hot for the track and now our 1/4 mile is shut down till next year, due to the flooding. I'll get some more pics this weekend.
Old 09-09-2017, 07:08 AM
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Glad to hear the car wasn't one of the storm casualties. Can't wait to see the results.
Old 09-11-2017, 07:37 PM
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