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 naturally-aspirated. Fully race-ported flowing 275 cfm @ 28" water with 2.055/1.60 valves, potential is approx. 580 HP.

Sep 14, 2009 · Optional high-performance engine supplied with flat top pistons, performance cam, 194 intake valve heads, and high volume oil pump" for $1012. They also offer a newer version with description of "Roller cam, 2-bolt main, block #880, head #906, valve cover bolts thru center of cover, plastic timing cover with crank sensor. Vortec" for $1649.

Apr 16, 2010 · Al Covin 's book CHEVY BY THE NUMBERS notes/verifies this oddity of the 881 & 882 Castings being excactly the same late in the 1974 year . Just sold an extra set of the good 2.02 /882 cast heads . Many times the nicer HP 882 heads can be picked up cheap as people don't realize which version they have.

Oct 17, 2008 · the edelbrock is part number#7516 which is what summit sellls thats made for the vortec the heads had center bolt valve covers also atwhich all of your vortec from what I was told had them also. guy told me the heads had been fixed to hold up to a 550 lift and self alligning crane roller rockers. he said thats what machine work was needed on ...

Mar 3, 2017 · Vortec heads with a drop in spring kit or have the guides cut, .028" thick head gaskets and self aligning roller rockers. Retrofit hydro roller cam in the 220/ [email protected] range 500ish lift, RPM airgap intake, 1-5/8" headers, 600-650cfm carb, good quality HEI with a decent curve 30-32 degrees total timing.

Dec 7, 2006 · I had a set rebuilt then after rebuilding them i went with the vortec heads. better flow, better chambers, after modifying the springs you can run a higher lift cam. and they are cheap compare to other aftermarket heads. but the cost of the new vortec style intake could bust the budget, and the the rocker arms need to self aligning style ...

Jul 4, 2006 · Chevy 350 roller block with Vortec heads, Alex's Parts Beehive springs & grinded retainers, Howards hydr. roller cam 270/278 495"/500" 114°, item 183215-14. Comp Cams Magnum roller tip rockers 1.6:1 self aligning got mis-colored like this after a few hundred miles of moderate highway crusing.

Nov 12, 2011 · The chamber design is fairly good, similar to the old camel hump heads of the '60s, though with smaller chambers (58cc vs 64cc). Intake ports usually measure out around 165cc. They work very well when upgraded from 1.84/1.50 valves to 1.94/1.50 valves - though its not generally recommended to go larger, especially on the intake, due to valve ...

Jul 2, 2009 · I am having a difficult time deciding which engine to install them on that would give my '80 Z28 the best power and performance for the street. It has a 4 speed muncie and stock 3:73 rear gears. I am torn between a 327 bored 40 over w/flat top pistons or a GM Performance 290hp 350 4 bolt main Crate Engine.

Nov 29, 2008 · Choosing a Hydraulic flat tappet cam for vortec 350 Hi Everyone, I'm pretty new to this forum and being a chevy owner (mopars 25 years ago) I am building my first engine. it's meant for fun on the street and maybe a drag race here and there. I have a '84 350 .020 over. '96 Vortec heads 2.02 / 1.60 valves & ported