Chevy High Performance Letters - CHP Garage

Backyard Follies
After getting off work I decided to change the shifter in my '79 Malibu from a column shift to a floor shift. Being in a hurry, I drove the car on the ramps, forgetting to chalk the wheels. I got under the car to undo the linkage, and as soon as I turned the ratchet I heard a clicking noise. Realizing what I did, I scurried out from under the car as quick as I could, but it was to late. While I managed to get my head out in time, the front wheel got my shoulder. I was in serious pain, but I wanted to finish the job-and I did!

My wife wanted me to go see the doc, and I ended up telling her I was fine. It wasn't until the following morning that I realized I was still in a lot of pain and went to the hospital. When I told the nurses and the doc what happened, they gave me a puzzled look. I think a few even snickered at me. After a few x-rays I was told it was only bruised, along with my ego. When I got home I got rid of the ramps and bought a floor jack and two jackstands.

Jeff Weaver
Tybee Island, GA

Helping Hands
I received your July issue and turned to the dyno tune article for the low-compression 383 stroker ("348 Revival"). I wanted to say that this piece was very informative. I have a '72 Chevelle with a similar engine to the article. I'm running a 383ci with 9.5:1 compression, Jegs 197cc aluminum heads, 64cc combustion chambers, and Comp Cams Pro Magnum roller rockers (1.6/1.52 intake/exhaust).

The cam has 486-inch lift and 230 degrees duration at 0.050. Intake is a Victor Jr. with a 750 Q Series Quickfuel carb, and I'm running 1 3/4-inch Headman headers with 2 1/2-inch Flowmaster mufflers with no tailpipes. I opted for the California Performance Trans 2004R and a 2,600-stall converter. The rearend is a 12-bolt with 3.73:1 gears.

Back to the article. I jetted the carb with 78 jets in the primaries and left 84 jets in the secondaries. I set the timing at 37 degrees full advance, which is 3 degrees less than what you used, and the car runs like new money. The old stumble from tipoff is gone. Midrange is great at part throttle, and when you get into the accelerator all the way the car runs better than it ever has. I'm planning on a dyno tune in the near future so they can fine-tune it. Thanks again for a good and useful tech section.

I should mention that after riding Harleys for 37 years, and after a serious accident, I decided to get back into muscle cars three years ago. Your magazine has been a great source of help to me. Keep up the outstanding articles.


Thanks, Kevin!
Hi, I am responding to "Keeping the Sanity" in Garage, July '09. That was my letter, and I wanted to thank you for publishing it. I would also like to inform you that I did manage to get the power steering issues fixed on my SS. I ended up just cutting the old line off and hammering a socket on, and voila! It came off. Thanks again, and keep up the great work.

Justin Sherwood
Port Saint Lucie, FL

Another One Gets Hooked!
First off, I am going to make you mad by saying I don't care what it says on the valve cover. If you are worthy, you are worthy. I teach auto tech at the high school level in Tampa, and I am living my dream. Anyway, I was down at the local dragstrip racing my-dare I say it?-Datsun. I have a '78 Datsun 280Z with a turbo motor, and it runs 12.6 at 110 mph and I drive it back and forth to school.




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