Search results for "fitech"

Q: What do the different gasoline octane ratings mean? … A: The octane rating measures the performance of a particular fuel blend. The higher the number, the more compression it […]

Q: I have a 1973 Chevy K20 truck with an aluminum-head, roller cam 383 stroker. I’ve heard from some of my old-school gearhead friends that a properly tuned Quadrajet is […]

Q: Do I need hub centric rings for my new wheels? … A: We recommend using hub centric rings on all aftermarket aluminum wheels that will accept them. Hub centric […]

The LC8 engine is a 6.0L Gen. 4 small block engine used in GM trucks and SUVs between 2011 and 2019. It is unique among the Gen. 3 and Gen. […]

The LZ1 is a 6.0L, Gen. 4 small block engine used in GM hybrid trucks and SUVs between 2010 and 2013, replacing the LFA (2008-09) as the LS engine family’s […]

The LFA is a 6.0L, Gen. 4 small block engine used in GM hybrid trucks and SUVs between 2008 and 2009. The LFA was upgraded with AFM and VVT. For marketing […]

Q: I have a 1981 Pontiac Firebird with a Chevy 350 in serious need of some more low-end power! It has a Holley Dominator manifold and a 750 cfm car, […]

Q: I have a 1970 Lotus Europa S2. It’s a mid-engined, rear-wheel-drive car. With a little cutting and welding, I managed to take a Ford 302 (bored .30 over) and […]

The LM4 is a 5.3L, Gen. 3 small block engine used in GM trucks between 2003 and 2005. It’s is very similar to the LM7, except that it’s built on an […]

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 […]