You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re exploring a technique for proper intake manifold-to-cylinder head sealing. C.M. Chicago, IL Q: I purchased a set of Edelbrock aluminum heads for my 1979 Corvette 350 engine. The engine has a 280-degree duration solid lifter camshaft, 10:1 compression pistons, and
You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re examining camshaft duration and piston-to-valve clearance. D.W. Nova Scotia, Canada Q: I have a 454 in a 1983 Trans Am. I would like to install a bigger camshaft with an operating range to 5,500 rpm, yet have safe piston-to-valve
A friend of mine just added an EZ-EFI 2.0 EFI to his big-block Camaro and while it runs great, it has definitely lost much of its old rumpy cam idle characteristics. Is that normal for EFI engines? Why does this happen if the cam has not been changed? D.S. Jeff Smith: This is a really
You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re examining how changing rocker arm ratio can help performance. T.Y. Thornton, IL Q: I am in the market for roller rockers. I own a 1966 SS Chevelle with a 396. The engine is bored .030 over, has 10.25:1
I bought a 4L80E automatic trans out of a late model pickup to put in my ’66 Bel Air. We swapped a big block Chevy into the car a few years ago with a TH-400 transmission and now I’d like to add an overdrive transmission. What will it take to convert this new trans into
You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re diagnosing rough engine operation at highway speeds. H.R. Marshfield, WI Q: I have a 1967 Corvette with a fresh 460-cubic-inch big block. It has square port aluminum heads, a Weiand manifold with an 800 cfm Holley double pumper, Chevy
The Summit Racing tech department tackles your automotive-related conundrums. This week, we’re discussing common causes of camshaft failure and what you can do to prevent it. Q: What causes a camshaft to fail? A: We’ve gotten that question (or something very similar) a lot. We’ve also heard a lot of questions about camshaft installation and break-in procedure. Since
I’ve heard that changing cams in an LS engine is really easy, but I’ve never worked on one of these engines before and I don’t want to screw it up. Do I need any special tools to install a cam in one of these engines? I put a 5.3L truck engine in my off-road Jeep
You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re discussing calibrating MAF sensors for your fuel injector size. J.S. Franklin, TN Q: I have a 1994 Mustang GT equipped with a manual transmission. I want to upgrade my mass airflow sensor now that I have a cold air intake
I’ve always thought that vacuum advance was something just for stock engines and something you didn’t use with a performance engine. In fact, I’ve heard guys say they’ve locked out their advance and just run a fixed timing amount. Is this a better way to go with a street engine? I have a small-block 350
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