Mailbag: How to Install a Standpipe on an AN Fitting
Q: I have a Ford 428 engine and I’m installing AN fittings on the heater hoses. The fitting that goes to the intake manifold requires a standpipe. How can I install a standpipe on an AN fitting? A: Normally you’d have to piece together several fittings to get the results you’re looking for. However, JOES
Ask Away! with Jeff Smith: Vacuum Advance and How it Relates to Part-Throttle Timing
Our tech column seems to be gathering quite a following of guys who want to know more about their cars and engines. One reader posted a comment (below) in response to my answer about ignition timing curves. The original post was roughly a year ago and has resulted in over 20 comments on the answer.
Monday Mailbag: How to Choose Motor Mounts for an Early Small Block Chevy
Q: I need a set of Chevy small block motor mounts for my 1969 Camaro. I’ve been told there are two sizes available. How do I determine which size is correct? A: In the early years, Chevy used two different motor mounts. The “short and wide” version measures 2⅝ inches between the ears, and 1¾ inches from the
Mailbag: How to Cure Spark Plug Fouling During Idle
Q: I own a 1971 Dodge Demon with a 400. The 10.5:1 compression engine has a forged crank and “LY” rods, and has a balanced bottom end. The heads are 906 castings port matched to a Weiand Team G intake and 2.5-inch headers. The heads have also had port work done. The cam is a Mopar Performance
Ask Away! with Jeff Smith: Converting a Draw-Through Carburetor to Blow-Through
I have a 850 Mighty Demon carb marked BC 56. The carb is designed for use with a Roots or draw-thru supercharger. I want to use it for blow-through using a hat. From pictures I’ve seen, it looks just like a blow through carb except for the milled tracks going to the throttle shafts. What must
Mailbag: Checking Hydraulic Lifter Preload with Non-Adjustable Rockers
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
Mailbag: Diagnosing Engine Breakup at Highway Cruising Speeds (& Broken Dampers, Too)!
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
Mailbag: Top 3 Ways to Cure a Pre-Ignition Condition
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
Ask Away! with Jeff Smith: How to Increase Compression on the Cheap
Is there a cheap way to increase compression on my small block Chevy? I have a 350 small block with iron heads. I don’t know much about the engine because it came in the car. The previous owner said it was rebuilt and has a cam but he couldn’t remember the specs. The other parts
Mailbag: Tuning for More Off-Idle Power
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




Stay Connected