Q&A

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 […]

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 […]

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 […]

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 […]

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. […]

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 […]

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 […]

If you’re interested in learning more about how motor oil really works and how to maximize the performance and longevity of your engine parts, then this video is probably for […]

I was helping my buddy remove the heads from his truck this last weekend. We ran into a problem where two of the collector bolts on the passenger side header […]

C.V. Westover, MD Q: My 1991 GMC Sonoma pickup has a 4.3L TBI engine, a 700-R4 transmission, and a 3.42:1 rear end. The truck’s GVWR is 4,995 pounds. How does this […]