Q&A

I just bought a used 5.3L iron block engine out of a truck. I’ve decided to put new replacement pistons and rings because I found a set of cheap take-out […]

Q: I have a Chevy Caprice with a 350 4-bolt main, a 292 Lunati cam with .480” of lift, and a high-rise intake with a 750 Holley carb. My heads […]

You did a tech answer around two years ago which was about adding a set of Vortec heads to a small-block Chevy. How much of a horsepower gain could you […]

Q: I have a Mustang Foxbody that will get a 1970 460 big block. So far, the engine has been bored .030 over, has TRW 10.5:1 forged pistons, ported and […]

I’m confused. I see all kinds of opinions about iridium and platinum spark plugs versus the normal copper plugs. Some say they’re good while others say not to use them […]

Q: I have a 1970 El Camino that will be used as a daily driver performance car. I have a Chevy 350 small block that I want to assemble with […]

Q: I am in the process of rebuilding my small block Chevy and am looking for the formula to figure out the proper size carburetor. Do you know it? If […]

I recently purchased a’71 Camaro with a small-block and a 700R4 overdrive trans. The guy who I bought it from said the trans has a lockup converter and that everything […]

You’ve got questions, we’ve got answers. We work with the Summit Racing tech department to help you tackle your auto-related conundrums. In this week’s Mailbag, we’re calculating compression ratios and cylinder head volume […]

You’ve got questions. We’ve got answers. We work with the Summit Racing tech department to tackle your automotive-related conundrums. This week, we’re exploring why a 427 c.i.d. big block Chevy engine […]