Mar 5, 1999 · Vortec heads were used exclusively in trucks and SUV's. No passenger cars were equipped with these heads. Stock out-of-the-box Vortec heads have approx. 480HP potential …

Dec 16, 2024 · Not all center bolt heads are true vortec heads. Only the 96-2001 heads with the casting number 906 or 062 are true vortec heads. On the ends will be a half hump or a saw …

Oct 1, 2024 · Vortec heads are good, but they will most likely need a rebuild so factor in that cost, and trying to find a set that is not cracked is more work. Ray Best pass 8.87 at 150.98 1.212 60'.

Dec 9, 2005 · Vortec heads (and most others) like straight stemmed valves. Undercut valves create unwanted turbulence and a decrease in intake charge velocity (they add volume …

Sep 23, 2009 · most vortec i have seen and have heard of come in closer to about 62cc, you would be better off keeping the quench areound .045 for a better burn and more power and …

Oct 8, 2004 · Here’s what happened when I ran a Competition Cams Comp Magnum 270H (.470" lift) on a set of stock Vortec heads. I had heard conflicting reports of how much lift a stock …

Apr 19, 2009 · Yes the 1996-02 L31 350 vortec heads will bolt to ANY gen 1 350 engine. He will just need an 8 bolt vortec style intake rather than the std 12 bolt intake He will also need the …

Oct 4, 2004 · Vortec heads (and most others) like straight stemmed valves. Undercut valves create unwanted turbulence and a decrease in intake charge velocity (they add volume …

Jul 19, 2023 · I updated my 1972 307ci small block engine in my 68 Chevelle with new Vortec heads, medium cam,Duration:262/270,RPM range=1300-5600. I'm currently using, Autolite …

Dec 3, 2008 · Here's my 400/vortec combo. Stock dished pistons, old used Edelbrock Torker Plus cam (similar to Performer RPM cam), stock vortec heads (machined to clear extra lift), alum …