You’ve got questions. We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re answering the basic question: What’s the difference between a single pattern and dual pattern camshaft? K.B. Washington, PA Q: What is the difference between a single pattern camshaft and a dual pattern camshaft, and how do I
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we examine ideal camshaft lobe separation for nitrous applications. D.M. Pitman, NJ Q: Can you shed some light on camshafts made for nitrous engines? Why would they have a lobe separation of 112-114 degrees, versus 106-108 degrees for an otherwise
[portfolio_slideshow id=20919] A timing chain doesn’t seem like it has a lot to do. All it does is turn the camshaft in concert with the crankshaft, right? Well, yes… and no. On many V8 engines, accessories like the oil pump, mechanical fuel pump, and the distributor are indirectly driven off the camshaft. That means a
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re talking valve spring pressure and how it affects valvetrain performance. C.K.• Somerville, OH Q: I have a 1967 Ford Bronco. Being the serious gearhead that I am, I want as much power as I can get out of
Got questions? We’ve got the answers—the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re covering rocker arm ratio and how it affects performance. S.B. • Atlanta, GA Q: I want to purchase a set of COMP Cams rocker arms for my 327-powered 1966 Chevy Nova. What is the difference between 1.5- and
Got questions? We’ve got the answers—Mondays when the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re showing you how to give new life to a tired, old engine. J.S. • Saltillo, MS Q: My 1990 Chevy (C-Series) Silverado 350 Sport smokes at start-up and burns through oil. I’d like to rebuild it
Got questions? We’ve got the answers—Mondays when the Summit Racing tech department tackles your automotive-related conundrums. This week, we’re helping customers build better track cars. From: John Baker, Sr. • Harrison, AR Q: I have a 1953 Chevy half-ton truck with a 283 at .030 overbore and .010 under rods and mains. I’m running early
Not so long ago, the bigger is better philosophy reigned supreme regarding camshafts. The result was overcammed engines that sounded great and could crank serious top-end power, but were not very streetable and couldn’t idle to save their lives. But thanks to modern cam technology, you can come pretty darn close to the Holy Grail
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