I'm curious to know who's using which heads.

Here are the fast-burn ones: https://www.spoperformanceparts.com/store/catalog/Product.jhtml?PRODID=680&CATID;=671

quote:

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This head can be used on any 1958-99 283-400ci small block Chevrolet V8 engine with conventional water flow design...
The name "Fast Burn" refers to the head's ability to quickly and completely burn the air fuel mixture, resulting in higher cylinder pressures and more power.
This head is a bolt-on 30 hp increase when used on our ZZ4 crate engine. When tested on a 383 ci small block engine with 9.5 to 1 compression ratio and .540" lift roller cam, single plane intake manifold and 750 cfm Holley carburetor, the Fast Burn heads produced 497 hp at an incredibly low 5800 rpm.

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Anyone else drooling yet?

[Modified by ddecart, 2:59 PM 3/17/2002]

Edelbrock Performer RPM (20%, 16 votes)

Stock heads (15%, 12 votes)

Trick Flow 23 Degree aluminum heads (12%, 10 votes)

AFR 190 or 210 (11%, 9 votes)

Sportsman (7%, 6 votes)

ZZ* engine with stock heads (5%, 4 votes)

S/R Torker (3%, 3 votes)

"Camel Hump" heads hogged out to 1970 LT-1 specs (3%, 3 votes)

Trick Flow "Twisted Wedge" (18i/23e degree) aluminum (2%, 2 votes)

GM Vortec Heads (Cast Iron Fastburns, with smaller valves and weak springs) (2%, 2 votes)

brodix track1 (2%, 2 votes)

Dart Pro 1 (2%, 2 votes)

Canfield 195 or 220 (1%, 1 votes)

041's out of a 69 370hp vette ported and polished (1%, 1 votes)

New gen LT1/LT4 (1%, 1 votes)

Dart Iron Eagle 180cc intake runner, 72cc Chamber (1%, 1 votes)

GM Fast Burn (1%, 1 votes)

Pro Active Lightning (1%, 1 votes)

Holley Systemax (0%, 0 votes)

I have a set of ported world sporsman II heads. They are good heads, but I wouldn't buy them again.

I think that there are really only two ways to go. Either get the Vortec heads (which probably flow better than the fastburn heads) or get some AFR heads. The Vortecs are great heads and dirt cheap at $400. The AFR's are consistently the best heads, but kind of pricey at $1,100, but well worth the $$. If you really want to make great HP, the AFR's are the best and they really aren't that expensive if you figure HP per $$. Every dyno test I have seen has shown these to be the best performing heads. I wish I had known more when I bought my sportsman II's.

Mike
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65 327 coupe. Now 406. World Sportsman II heads, 10.5:1 compression, MSD 6AL, hooker Super Comp Headers, RPM cam, Air-Gap intake, Demon 750 carb, 2.5 inch exhaust with X-pipe and Dnyomax Ultraflow mufflers, 17 x 7 Torque Thrust II's, TRW rear springs, big swaybars, Konis, 4:11 gears and lots of smoke. Best et of 13.66 @100mph in 3rd gear (et is with #'s 327 now in storage, hoping for low 12's with 406)

But, my builder does not put them on stock. They get them bare from Edelbrock then pocket port, valve job, stainless Ferrea valves, Comp Cams springs, etc. So, overall, I am pretty happy.
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Steve G.

Was: Daily driven 1975 L-48/4spd/FE-7 convertible

Now: Daily driven 1975 355/5spd/FE-7 convertible

Current mods: Rebuilt L-48 (355), Performer RPM heads, XE262 cam, 1.6 rockers, Edelbrock Performer 2101, rejetted and recurved by Lars, true duals with Dynomax CeramaCoat headers, Tremec 3550, BeCool radiator, Spal dual fans, '81 seats, TRW spring, American Racing AR-136 rims 15x8

Plans:VB Performance Plus and Steeroids R&P; kits, when I am back out of the red.

Click Here <----> Home Page, Pictures and Specs <-----> Click Here

Regards,

Jim
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1973 Georgia Bulldog Red Convertible
(*Car has been converted to 1980 Model*)The car GM should have built
350ci;4-speed;vortec heads;carter 625cfm carb;edelbrock vortec performer intake;dual 2-1/2" exhaust with dynomax ceramic coated headers and 16" electric cooling fan.
251HP & 310ft-lbs torque at the rear wheels (297HP & 366ft-lbs torque at the flywheel)