Q: We have a 1974 Ford F-100 pickup we use as a tow vehicle. It has a 360-cubic-inch two-barrel engine running Crane stock replacement cam and “anti-pump-up” hydraulic lifters. The heads are fitted with TRW valves and springs that are close to OEM in the lift and spring pressure department. The rockers are stock ratio and
Q: I have a 1973 Ford Ranchero. It has a stock 302 engine with a two-barrel carburetor, a C-4 transmission, and an open-type rear axle with 3.08 gears (I think). The only modifications are headers and a dual exhaust. At about 50 miles-per-hour and above, the engine starts to break up. Acceleration up to 50 is
Q: I have a Ford truck with a 390 engine. I had the heads redone and installed a new cam and lifter set, true roller timing chain, valve springs, single plane Edelbrock intake, adjustable rocker arms, and headers. I use the truck to haul my 11 ½-foot camper. When I reach highway speeds and keep the rpms
Q: I own a 1966 Pontiac Lemans with a 1970 400-cubic-inch engine, a two-speed automatic, and an open rear axle. I recently rebuilt the engine to stock specs, adding a Crane cam (290-degree advertised duration, .454-inch lift), an Edelbrock Performer intake, and a 600 cfm Holley. When I punch the gas pedal from a standing
When it comes to stock replacement applications, finding the right U-joint is as easy as using the basic Make/Model search on SummitRacing.com. But, if your driveline has been modified, choosing the right part can be challenging. You’ll need to measure your U-joint to find its series or style. Most U-joints come in one of two
Q: I race a 12-second bracket car and I need to replace my Snell SA2005 helmet. Can you tell me what rating is currently required for my car’s class? A: As of Jan. 1, 2017, a Snell SA2005 helmet no longer meets NHRA requirements. For cars running 13.99 or quicker, you’ll need a Snell SA2010
Q: I’m going to drop a GM LT4 Hot Cam into my Gen I small block Chevy. What valve springs do you recommend for the best match? A: Summit Racing put together a COMP Cams valve spring chart to help you choose the right components for your camshaft. The LT4 Hot Cam is a hydraulic roller with
Q: I recently rebuilt a 383 for my 1968 Charger. It’s not a race car, but a typical street cruiser and occasional quarter-mile warrior. My question is about fuel. I’m not certain how much fuel additive or 100 octane aviation gas is enough, too much, or even necessary at all. Some people say it’s pointless
(image © superchevy.com) Q: I am getting ready to pull the trigger on a supercharger for my 1966 Chevelle. What should I do about my carburetor? Do I need to go larger to accommodate the increased airflow requirements of the supercharger? What else can you tell me about achieving the right carb setup for my application? A:
Q: My Holley-equipped vehicle has a stumble from a dead stop. Someone told me the accelerator pump nozzle may need resized. How do I know if I need to change an accelerator pump and how do I determine the proper size? A: It’s true that one of the most common causes of stumble is not having
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