Monday mailbag

Mailbag: How to Identify Your GM 10-Bolt Axle

Q: I have a 1964 Chevy II/Nova with a 194 cubic-inch straight-six engine, Powerglide, and a 10-bolt rear-end. I’m trying to identify the 10-bolt rear axle — I want to know if it is a posi or not. There are no ID tags anywhere. Usually only one tire spins, but sometimes both do. Also, I notice a mysterious

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Mailbag: Tips for Choosing the Right Tie-Downs for Your Race Trailer

Q: I need to buy some new tie-downs for my race trailer. What are some rules or guidelines that should be followed when purchasing tie-downs? How about tips for proper installation? Anything else I need to know before I hit the road to the first race of the year? A: First and foremost, your tie-down straps must be

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Mailbag: Installing a FiTech GoStreet EFI on a Pontiac 400

Q: I have a 1979 Pontiac Trans Am with a 400 cubic-inch engine. I am looking at the FiTech GoStreet EFI 400HP Self-Tuning Fuel Injection System. Will this system mount straight up to my Pontiac engine? A: This self-learning EFI system features straightforward installation with application-specific modifications required. The system delivers a quick and accurate start-up process

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Mailbag: Correcting Speedometer Gears for Accurate MPH Readings

Q: I am having trouble finding the correct speedometer gear for my 1970 Mustang. The car has a top loader 4-speed transmission and a 4.10:1 rear-end ratio. I’m running 26-inch-tall rear tires, and a 21-tooth speedometer driven gear. The 21-tooth gear is the largest I can find, and the speedometer reads about 27 mph fast.

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Mailbag: Taking a 1970 Mustang into the 9s at the Track

Q: I have purchased a 1970 Mustang. I have a 1969 460 engine that I’m told will fit in the engine compartment. I want to build a car that will do 9-second quarter-miles. The engine will be bored .060 inches over, have a stroker kit, Cobra Jet heads, and an Edelbrock Victor Jr. intake. I need

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Mailbag: How Tire Size Affects Your Engine RPM

Q: I have a Chevy 350 engine bored and stroked to 383 cubic inches. It has 76cc heads, COMP Cams 280-degree, .480-inch lift cam, Edelbrock Performer RPM intake with a 650 cfm Holley double pumper carb, and a Mallory electronic distributor. The engine is hooked to a Turbo 400 transmission with shift kit. The car is a

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Mailbag: Converting a V6 S-10 Blazer to a Small Block Chevy

Q: I have a 1985 S-10 Blazer with a carbureted 2.8L V6, 4WD, and a 4-speed manual transmission. What parts do I need to covert the truck to a small block Chevy? I know some of the parts include motor mounts and exhaust, but what about front springs, radiator, bellhousing, and wiring? Am I missing anything?

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Mailbag: Tracking Down Common Causes of Sluggish Engine Response

Q: I recently rebuilt a Mustang 5.0L engine. I had it bored from .03o-inch over and installed a Ford Performance Parts E303 camshaft, Melling high-volume oil pump, Edelbrock intake, Holley 600 cfm carburetor, and a complete MSD Ignition system. The heads have 2.02-inch/1.60-inch valves, the headers are one-and-5/8-inch shorties, and the fuel pump is a Carter electric

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