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July 2012 Chevy High Performance Garage

May 17, 2012
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COPO Colors

I just received the May issue and wanted to comment on the new COPO Camaro paint and stripe combinations. I have been painting graphics on my own vehicles since I bought a new ’67 Camaro and used House of Kolor paint. Some of the combinations I have used that really popped are True Blue Pearl with Bright Silver or Cinnamon Pearl with Bright Gold. Another favorite is Magenta Pearl with ’94 Ford Brilliant Blue (this is the brightest blue you can get, also called Median Lapis Blue). I know, the combinations are endless. Thanks for the great magazine!

Ted Caster
Portland, OR

Engine Building 101

I enjoy reading Shop Talk every month in Chevy High Performance. I found the latest topic very interesting because as the moral of the story states: do your homework and the secret is combination. Every engine component has to work in unison with the others and be matched to do so. My father and I built a ’92 GMC S15 pickup for some street/strip duty. I came up with a nice combination on a stock bottom end 350 Vortec, which ran 12.10 at 111 mph. We wanted to go high 11s so I told my dad we could use the same build but let’s build a 400 small-block.

What we did was take a 400 small-block and bore it 0.030-over with 350 rods. We used a TRW forged piston for this rod combination with coated skirts. We had the crank cross-drilled and balanced, along with the rotating. We installed the COMP Cams XR288HR hydraulic roller cam with their Pro Magnum roller lifters. For heads we used Edelbrock E-Tec 200s and followed Edelbrock’s instructions for drilling the three steam holes in each head. The intake manifold of choice is Edelbrock’s Performer RPM Air-Gap and feeding that is a Pro-Systems 850-cfm double-pump carburetor. We run a high-volume Moroso oil pump and Crane Cams roller rockers. Our header is an S10 race header by Hedman, which has one tube exiting the wheelwell outside the frame.

This past season we turned an 11.40 at 117 mph with a 3.50:1 gear in the 9-inch rearend, Turbo 400 with a 3,500-stall converter, and a Competition Engineering Slide-a-Link with a pair of Mickey Thompson ET Street Drag Radials. We are currently installing a 4.11 rear gear with a Gear Vendors unit for an overdrive and hoping this will put us in the high 10s. Not bad for a 3,300-pound truck with a very streetable small-block. It’s really dependable and actually not bad on fuel. This truck goes to many local cruises and shows over the summer and is a blast to drive. I also competed at Toronto Motorsports Park (Cayuga) at the end of July at Rich’s Armdrop with the truck, which was a lot of fun!

Michael Brady
Simcoe, Ontario, Canada

Chevy High Performance Nationals

Our inaugural Chevy High Performance Nationals is just around the corner—will you be there? If this is news to you, then head over to, where you can see the detailed list of heads-up drag racing classes. This is also one of the stops for the LSX Challenge Series! There’s more, you can also expect to see side-by-side door slammer action, jet cars, the latest Pro Touring cars duking it out on the autocross, and a giant manufactures’ midway. There’s something for everyone, so be sure to save the weekend of June 1 and head out to Atlanta Dragway in Commerce, Georgia!

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Writings on the Wall

Facebook Fans Speak Out

RHS LS Build Poll

Logan Brown:
Nitrous 4
Supercharger 34
Turbo 6

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TFS top end swap

Marvin Barklow: Nice solid upgrade.
Scott Borge: Can’t wait to hear the numbers.
Joe Warner: I’d love to have this in my ’86 K10! Surprise some Mustangs and those kids with the tuner import cars!

434 on nitrous

Eric Wisniewski: Gotta love the throttle response, plus an over 500-horse street motor that could run into the 9s on spray, kick butt.
Leonardo Alanis: I want one!
John Perry: Awesome guys . . . really!



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