Who here is putting 400 RWHP/RWTQ Down on Stock Heads and NA?
Registered User
Joined: Dec 1999
Posts: 2,248
From: Houston, TX
I'm not reall impressed with anyone's porting. There are a couple guys that can do solid work time after time, but these guys putting down 400rwhp aren't trapping over 116-117mph w/ reasonable raceweights. Something doesn't add up, IMO.
A local guy dynoed ~399 and trapped 119 - GTP heads/cam/396ci (~3600). The good Tx weather helps, but the gap is so big its hard for me to believe. Cars are weird
.
Ryan
A local guy dynoed ~399 and trapped 119 - GTP heads/cam/396ci (~3600). The good Tx weather helps, but the gap is so big its hard for me to believe. Cars are weird
.Ryan
Registered User
Joined: Jun 2002
Posts: 2,456
From: sarasota, fl
Originally posted by 96-speed
A local guy dynoed ~399 and trapped 119 - GTP heads/cam/396ci (~3600). The good Tx weather helps, but the gap is so big its hard for me to believe. Cars are weird.
A local guy dynoed ~399 and trapped 119 - GTP heads/cam/396ci (~3600). The good Tx weather helps, but the gap is so big its hard for me to believe. Cars are weird
.396 = more power under the curve
Registered User
Joined: Aug 2001
Posts: 870
From: Cuyahoga Falls, OHIO
Originally posted by Fastbird93
Grease, you got a dyno graph??? I'd like to see the TQ curve.
Grease, you got a dyno graph??? I'd like to see the TQ curve.
96-speed - With full race weight and stock wheels, I've gone as high as 117.72mph in the 1/4. Next week I'll have 15x4 and 15x10 racing wheels on, about 60lbs lighter and with the cold weather we have now I hope to trap higher than that
Registered User
Joined: Feb 2002
Posts: 5,645
From: Bridgewater, MA
Originally posted by Grease
HERE is my dyno sheet, and as you can see, they don't get much flatter than that.
96-speed - With full race weight and stock wheels, I've gone as high as 117.72mph in the 1/4. Next week I'll have 15x4 and 15x10 racing wheels on, about 60lbs lighter and with the cold weather we have now I hope to trap higher than that
HERE is my dyno sheet, and as you can see, they don't get much flatter than that.
96-speed - With full race weight and stock wheels, I've gone as high as 117.72mph in the 1/4. Next week I'll have 15x4 and 15x10 racing wheels on, about 60lbs lighter and with the cold weather we have now I hope to trap higher than that
Registered User
Joined: Apr 2003
Posts: 1,591
From: PA
Originally posted by SkarodoM
There aren't too many over 400rwhp, even if you count inflated STD #'s...
There aren't too many over 400rwhp, even if you count inflated STD #'s...
Originally posted by Realquick
Those are STD #'s and not SAE?
Those are STD #'s and not SAE?
Grease, do you have the data sheet with the pressure ect so people can convert that to SAE if they want?
I got duped by the stupid mustang shop i got my car dyno'd at. I specifically asked if the numbers were corrected, but not to what, my bad. They gave me 'fluffed' STD numbers.
-brent
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Joined: Aug 2001
Posts: 870
From: Cuyahoga Falls, OHIO
Found them, SAE numbers. 404.8rwhp, 365.1rwtq.
That is still more than what I've seen from cars with GTP stage II heads and a 306 cam. And my heads are just "Econoport" heads that I screwed up and Phil brought back to life. They really should be used as door steps or paper weights. they flow 254/188 @ .500 lift
That is still more than what I've seen from cars with GTP stage II heads and a 306 cam. And my heads are just "Econoport" heads that I screwed up and Phil brought back to life. They really should be used as door steps or paper weights. they flow 254/188 @ .500 lift
Registered User
Joined: Aug 2001
Posts: 870
From: Cuyahoga Falls, OHIO
Originally posted by Fastbird93
Did you have to undercut the valves at all with that cam, or was it "plug and play" so to say? I'd like to think I could just throw some new springs and the cam in the car.
Did you have to undercut the valves at all with that cam, or was it "plug and play" so to say? I'd like to think I could just throw some new springs and the cam in the car.
Registered User
Joined: Aug 2000
Posts: 586
From: Oklahoma City, OK
I was a little over 400rwhp STD. The SAE #s are in the sign. AI ported LT4 heads for me
Contrary to what a lot of people think, there are only a few stock bottom end LT1/4 cars pulling over 400rwhp SAE on a dynojet. 400rwtq isn't gonna happen w/ only 350 cubes.
Contrary to what a lot of people think, there are only a few stock bottom end LT1/4 cars pulling over 400rwhp SAE on a dynojet. 400rwtq isn't gonna happen w/ only 350 cubes.
Registered User
Joined: May 2002
Posts: 291
From: Easley, SC, USA
graph 1
Graph 2
My dyno graphs...with major ignition problems which will soon be fixed. Should expect to see 425-430 SAE, 450-ish STD. Did I mention that my dyno was on pump gas, stock intake, stock stroke and NO CUTOUTS?
Expect to see times in the LOW 11's and traps 120+. Since it do go 12.3 at nearly 110 with bolt ons in crappy weather....
Graph 2
My dyno graphs...with major ignition problems which will soon be fixed. Should expect to see 425-430 SAE, 450-ish STD. Did I mention that my dyno was on pump gas, stock intake, stock stroke and NO CUTOUTS?
Expect to see times in the LOW 11's and traps 120+. Since it do go 12.3 at nearly 110 with bolt ons in crappy weather....
Last edited by GreenbeanZ28; Oct 7, 2003 at 03:50 PM.
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