Now how much horsepower will I be making
Thread Starter
Supreme Member
iTrader: (1)
Joined: Mar 2001
Posts: 3,245
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From: Medford, Oregon
Car: 1989 Iroc Z L98
Now how much horsepower will I be making
After looking into porting and polishing stock heads, i have decided just to buy new heads, here is a list of the mods, can you guys give me an estimate of how much horsepower i will have?
1986 350 with no emmissions whatsoever
Vortec Fast Burn heads (i think thats right)
Comp Cam (just a mild one)
Holly 600 cfm
Edelbrock performer RPM Manifold
Summit Rebuild Kit w/ 10.9:1 compression
Keith Black Pistons
Super competition headers
Real dual exhaust w/out cats
Dual flowmaster mufflers
Open element filter
Thanks
1986 350 with no emmissions whatsoever
Vortec Fast Burn heads (i think thats right)
Comp Cam (just a mild one)
Holly 600 cfm
Edelbrock performer RPM Manifold
Summit Rebuild Kit w/ 10.9:1 compression
Keith Black Pistons
Super competition headers
Real dual exhaust w/out cats
Dual flowmaster mufflers
Open element filter
Thanks
TGO Supporter
Joined: Apr 2000
Posts: 523
Likes: 0
From: CO
I am not trying to pick on people or pick fights
But there are easily to or three of the posts a day, try getting a dyno done.
Sorry I am no help.
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Mike Kenny
1991 Chevrolet Camaro RS 305 TBI
My Website
Administrator at Auto-Clubs.net
My Baby
But there are easily to or three of the posts a day, try getting a dyno done.
Sorry I am no help.------------------
Mike Kenny
1991 Chevrolet Camaro RS 305 TBI
My Website
Administrator at Auto-Clubs.net
My Baby
Supreme Member
Joined: Dec 2000
Posts: 2,078
Likes: 0
From: United States
rear wheel horsepower maybe 225-250
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92' camaro
New 305 block TPI conversion, Flat top pistons,Bore over .30 Forged parts all around,Edelbrock intake,ported plennum,ported corvette alluminum heads, accel cam,52mm throttle bodie, SLP runners Home aid cold air induction, Air foil,ford SVO 19lb injectors,fuel regulator,cloys timing chain, comp alluminum roller rocker arms and pushrods MSD 8.5 mm wires, bosch plattinum plugs, hypertech cap & rotor and coil, Edelbrock TES headers, free flowing catalytic converter and a 3 inch force II flowmaster exhaust system, and a 3 inch cutout,Zoom multi friction clutch, T-5 tranny,billenstien shocks&struts.
Soon to come!!!
Procharger system 12lbs o boost.
New paint job(hawaiin orchid purple)Cast alluminum ZR1 rims w/ 275 tires.
Favorite quote: "where ever u go, there u are"
Other car;
1971 plymouth Duster
Mods:340,edelbrock victor jr. intake, 650 4 barrel holley, heddman headers,40 series dual flowmasters, cold air intake,4:10 gears, just got a new paint job and cragar rims with 315 tires in the back.
:Yeah its not a chevy but damn how many 71' dusters have u seen in the streets.
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92' camaro
New 305 block TPI conversion, Flat top pistons,Bore over .30 Forged parts all around,Edelbrock intake,ported plennum,ported corvette alluminum heads, accel cam,52mm throttle bodie, SLP runners Home aid cold air induction, Air foil,ford SVO 19lb injectors,fuel regulator,cloys timing chain, comp alluminum roller rocker arms and pushrods MSD 8.5 mm wires, bosch plattinum plugs, hypertech cap & rotor and coil, Edelbrock TES headers, free flowing catalytic converter and a 3 inch force II flowmaster exhaust system, and a 3 inch cutout,Zoom multi friction clutch, T-5 tranny,billenstien shocks&struts.
Soon to come!!!
Procharger system 12lbs o boost.
New paint job(hawaiin orchid purple)Cast alluminum ZR1 rims w/ 275 tires.
Favorite quote: "where ever u go, there u are"
Other car;
1971 plymouth Duster
Mods:340,edelbrock victor jr. intake, 650 4 barrel holley, heddman headers,40 series dual flowmasters, cold air intake,4:10 gears, just got a new paint job and cragar rims with 315 tires in the back.
:Yeah its not a chevy but damn how many 71' dusters have u seen in the streets.
Junior Member
Joined: Nov 1999
Posts: 60
Likes: 0
From: Wichita, KS USA
I'd say you could definitely make at least 260 rwhp out of that setup. With compression like that, and those heads. Hell you might even be close to 275-280 rwhp.
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1992 Red RS with 305 TBI
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1992 Red RS with 305 TBI
Supreme Member
Joined: Jul 1999
Posts: 1,366
Likes: 0
From: Atlanta, GA, US of A
Car: 94 Z28
Engine: LT1 w/ headers, catback, CAI, tune
Transmission: 4L60E
Axle/Gears: 3.23s
A good Vortec headed motor with even a mild cam can easily make 330-350 hp at the crank. If it didn't make like at least 275+ hp at the rear wheels I would be disappointed or say it needed some tuning.
Try the CompCams XE262 (218/224 @.050) for a mild cam, runs good in mine. I have a similar setup to what you've got planned. I'm not really sure if the 600 cfm Holley will be big enough however, the 330hp Vortec crate motor (you should be a little stronger then that engine IMO) is suggested to be run w/ a 650+ cfm carb... I'm running a 750 on my 350 (also w/ a Performer RPM btw). Also, I'm running around 10:1 compression on 92-93 octance pump gas w/ no problems, but you may run into some detenation problems w/ nearly 11:1 and pump gas w/ iron heads...
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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray
Try the CompCams XE262 (218/224 @.050) for a mild cam, runs good in mine. I have a similar setup to what you've got planned. I'm not really sure if the 600 cfm Holley will be big enough however, the 330hp Vortec crate motor (you should be a little stronger then that engine IMO) is suggested to be run w/ a 650+ cfm carb... I'm running a 750 on my 350 (also w/ a Performer RPM btw). Also, I'm running around 10:1 compression on 92-93 octance pump gas w/ no problems, but you may run into some detenation problems w/ nearly 11:1 and pump gas w/ iron heads...
------------------
Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray
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