Dan87IROC-Z

What makes the Vortech heads so good? I mean, why are so many people excited about a TPI base that will fit the Vortech heads?

------------------
1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base

Synergy

I dont know who's excited about Vortech heads, because Vortech doesn't make heads... lol

------------------
92 Z28 5.7
------------------
Trick Flow 23° heads, Comp Cams XR270HR-10 cam, Accel intake base + ported TPI,
TES headers, Flowmaster catback, MSD ignition, #24 SVO injectors, 1LE aluminum driveshaft.

Click here to see pics of my car.
Check out our car club Truspeed
Check out the Bin Archive for all your .bin needs

Walls

sorry synergy but they are a head.

There a gm produced performence head that due to the small chamber size 64cc and the old vortech design that they are able to out produce the edelbrock Rpm heads along with the sportsman two heads yet only cost around $450 for a set complete minus rocker arms,push rods, and valve cover

------------------------
85 Z28 with 71' 350, 650 double pumper, air gap man, 280h cam, 10.5:1 comp, and vortec heads, 450Hp oh yeah


Josh

JPrevost

They have an awesome intake and the combustion chambers have a kidney shape which creats more power. WIth mild porting they make more hp and torque above 3000rpm than the famous vette heads. I have the article around here somewhere but even the stock vortec heads flowed better than the vette heads in the upper rpm range. Basically they make more power for less and that is a good thing .

------------------
, Jon (350 TBI!)
91 Red RS w/grey int, sq stereo (Alpine v12, kicker solo, MB quart premium etc)

• Holley 670 TB unit w/ 1/2" spacer/adapter
• Edelbrock RPM vortec intake
• 350ho 330hp vortec crate motor
• 8" harm. balancer
• Stewart stage 2 water pump w/160 thermo
• SLP tri-y headers to full 3"
• Rebuilt trans w/ SLP shift kit
• Centerline 16x8's all around
• 36/24 mm sway bars
• Full poly bushings, even motor mounts
• SLP LCA and panhard
• Alston SFCs
• Edelbrock 3 point STB
• Global west steering brace aka wonderbar
• Eibach pro kit springs
• Bilstien high perf. struts and shocks
• All this and I still have AC

My websiteAny questions?

89ProchargedROC

what many people are forgetting is that they have a slight raised intake runner which helps create more velocity and better flow.

also, the down side is that you are not supposed to port the vortec heads because you can screw up the design of the chamber and lose exhaust velocity. sometimes flow doesn't always mean power

jRaskell

I think what Synergy was referring to was the fact that GM makes a Vortec head, and Vortech is a company that specializes in superchargers. Though I would also have to assume he knew what the original poster was referring to.

Synergy

I know exactly what he was talking about... I was just being sarcastic

And for my two cents on this... Vortec heads are probably the best bang for the buck set of iron heads you can buy. As far as making it work with a TPI intake, you'll have to wait quite a long time until SDPC gets off their asses and decide to release the Vortec TPI baseplate. I decided to spend a little more on TrickFlow heads and an Accell intake. I'm happy with them

Dan87IROC-Z

Yeah, sorry, thats what I ment, the Vortec heads not the Vortech Supercharger company.

------------------
1987 Chevy Camaro IROC-Z
L98 TPI 350 (5.7L)
TH 700R-4 Transmission
Borg Warner 7.75" 9 Bolt Rear End

Current Mods: LT4 HOT Cam, Comp Cams 1.52:1 Roller Rocker Arms, Edelbrock TES 1 5/8" Headers, Hooker 3" Aerochamber Cat-Back System, Performance Resource Chip, Accel Ignition Coil, Cap, Rotor, 8.8mm Wires, K&N Filters, JET TPI Air Foil, All Free Mods, Falken ZIEX Z-Rated Tires.

Best ET (w/o LT4 cam): 14.32 @ 97.7mph
(corrected for elevation)

Soon to Come: 7.625" 10 Bolt with 3.42s and Accel TPI Intake Base

'87FAKE-IROC-Z

That Vortec TPI base doesn't impress me much.
The ports look smaller than a stock tpi base!
Nothing that can't be fixed with some porting, but you'd think that all this time to design this manifold they could have made it competitive with other aftermarket ones.
My opinion comes from the picture on the Scoogin Dickey site.

------------------
'88 RS (originally 2.8)
-350, .040 over, vette alum. L98s, stock tpi.
-305 injectors & chip
-TES headers & edelbrock cat back
-3.73 gears, 700r4.
Best with 2.8-17.4@77mph
Best with 305-15.0@93mph
Best with 356-13.7@101mph
on a 2.050 60 ft.
(Damn the 2.8!)

FlashGTA

These heads have the best efficiency of any cylinder head out their right now. They have great swirl which means they make great power, low emissions and great gas mileage. The downside is the small intake runner size limits you on CID and it limits ultimate horsepower. Also the exhaust side needs to be ported to help balance intake and exhaust flow. These are great heads for the price.