Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we help cure drivetrain vibration and increase 60-foot times. J.L. Kissimmee, FL Q: I have a 1966 Dodge Coronet with a 1972 440 and a 727 Torqueflite transmission. The 8 3/4-inch rear axle has 3.90 gears and a Sure-Grip
Z.G. Lexington, KY Q: I suspect it’s time to replace my shocks, but I’m not sure. I inspected them and I found no leaks. I also performed an old-school “bounce test,” and the car seemed to come to a rest reasonably quick. Any tips on diagnosing worn shocks and struts? A: Shock and strut wear
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. Last week, we helped a reader make around 400 horsepower with their Chevrolet 400 small block engine. This week, we’ve decided to take the same question and turn things up a notch with ingredients to make 440-460 horsepower. Once again, the
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re looking at ways to make over 400 horsepower from a small block Chevy 400. B.B. Hastings, NE Q: I have a 400-cubic-inch small block Chevy. I would like to be able to get 400-plus horsepower from this engine
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week we’re talking mufflers. D.W. Aurora, IL Q: I’m currently running tubular glasspack mufflers on my 1978 Ford F-150. Its pretty loud when you get on it! The truck sounds almost like a sports car. I think I would prefer a
J.M. • Tallahassee, FL Q: My 1988 IROC-Z has been parked for almost five years. I want to get it up and running again but I’m having issues with the fuel system. The pump doesn’t have consistent flow and when I hit it with a test light it’s very dim. What do you think is causing
Got questions? We’ve got the answers—Mondays when the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re reading spark plugs. J.B. • Houston, TX Q: I’m having a problem with my 1980 Ford 1/2-ton pickup. I put in fresh spark plugs and after 250 miles, I removed one and it was covered with black,
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re helping to rebuild a 6,500 rpm Chevrolet small block 350. R.B. • Las Vegas, NV Q: I am building a Chevy 350 using a four-bolt main block, a 400 crank, and 5.7-inch rods. The crank has knife-edged counterweights with
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re clearing up concerns about oil pressure. M.W . • Ringgold, GA Q: I have a 1980 Firebird Formula. I swapped the original 301 V8 for a 1972 400 that I rebuilt to stock specifications. I then bought a Melling high-pressure
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re answering some important questions about swapping gears. E.B . • Lake Ronkonkonia, NY Q: I have a 1987 Pontiac Trans Am with a 305 TPI engine, a TH-700R-4 transmission, and 2.73 rear axle gears. I want to upgrade to 3.42
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