Q&A

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 […]

I have a Chevy II with a 355 cubic inch small-block and a Muncie four-speed. Over the years, I’ve made some small suspension modifications with Global West De-A-Lum bushings. On […]

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 troubleshooting timing issues on a 400 c.i.d. engine swapped […]