Q: I recently had a new set of tires installed. I opted to go with a larger diameter than the originals that were on the car. Will this affect the accuracy of my speedometer? How do I check? A: There is a good chance you need to recalibrate your speedometer whenever you’ve changed tire size or altered your gear
Q: I have a 1963 Chevy II that I am fixing up. It has a 350 small block bored .030-inch over with a 383 stroker crankshaft, 5.7-inch connecting rods, and forged flat top pistons that spec out to 11:1 compression with 64cc heads. However, the heads I used are 58cc camelback heads that were supposedly rebuilt
Q: I’m rebuilding the 350 TBI engine in my 1992 Chevy 3/4-ton pickup, and I’m looking for a boost in bottom-end power. I’ve selected Edelbrock’s Performer TBI intake manifold and Performer-Plus cam and lifter kit. Is this the best choice for my performance goals? A: The Edebrock combination you’ve selected is an excellent choice for adding low-end
Q: Occasionally, I take my street-driven 1993 Ford Mustang to the track for some drag racing. I’d like to get more traction off of the line. Will 90/10 front shocks help, and are they suitable for street use? A: Designed strictly for straight-line racing applications, 90/10 shocks will let your vehicle’s front end rise
Q: I have a Turbo 400 transmission with a 4,000-rpm stall converter and a transmission cooler. My trouble starts when the transmission temperature gets to about 210˚ F—the transmission starts blowing fluid out of the top vent tube. Even this hot, the trans doesn’t slip and shifts just like it does when it’s cool, whether
Q: I have a 402 big block motor in my Chevy truck. It runs great from 1,800-2,000 rpm, on up. It has a Crane RV cam, Edelbrock Performer intake, and Performer heads. The rest is stock Chevy and pretty new (10,000 miles). At idle, it has a bad miss on cylinders 5 and 7 (we put the
Q: I plan on installing a supercharger in the near future and I’m not sure what carburetor to use. Do I need to upgrade from my current carburetor to a larger carb to get the most from the blower? Are there any special tuning measures I need to take? A: Much depends on the intended use of your vehicle. If your blown
Q: I have a 1985 Camaro Z/28 with the 305 TPI in it. When I was just cruising around, I glanced at my oil pressure gauge. One minute it was normal, the next it registered zero! As I was driving home, I noticed the gauge would register 5 psi at around 3,500 rpm, so I knew
Q: I am in the process of rebuilding a Chevy 350 small block as a 383 stroker. I am going to put the engine in a 1967 Camaro SS. I plan on using a dual quad intake and stock cylinder heads. My question is this: Should I run a piston compression ratio around 10:1, or should I
You’ve got questions. We’ve got answers—the Summit Racing tech department tackles your automotive-related conundrums. This week in our Mailbag, we’re tracking down the cause of misfiring. Q: I have a 1991 Chevy half-ton truck. It has a 305 TBI motor with underdrive pulleys, ACCEL distributor cap, rotor, and 8.8mm wires, platinum spark plugs, and a JET Stage 1 computer
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