The head and cam power list!
Registered User
Joined: Sep 2001
Posts: 175
From: Cullman,AL
1994Z, M6.
Lloyd Elliott ported stock castings 266/179 @ .500
Comp XE 227/233 camshaft with 1.6 pro mag rockers
Jet Hot LT's and Full Exhaust
351hp/348tq peak numbers SAE
AF ratio of 11.8 all the way across the chart and on a dynojet.
The torque curve is very nice, its still at 300 at 6000 rpm.
EDIT- I also don't have the intake ported matched or a few of the bolt on mods like an aftermarket TB or pullies. Minor stuff, but they still help a little.
Lloyd Elliott ported stock castings 266/179 @ .500
Comp XE 227/233 camshaft with 1.6 pro mag rockers
Jet Hot LT's and Full Exhaust
351hp/348tq peak numbers SAE
AF ratio of 11.8 all the way across the chart and on a dynojet.
The torque curve is very nice, its still at 300 at 6000 rpm.
EDIT- I also don't have the intake ported matched or a few of the bolt on mods like an aftermarket TB or pullies. Minor stuff, but they still help a little.
Last edited by whontime; Feb 15, 2004 at 08:43 PM.
Registered User
Joined: Mar 2002
Posts: 2,743
From: Baton Rouge, LA, USA
Originally posted by Fastbird93
Isn't he cutting something like a 1.4 short time along with DRASTIC weight reduction too??? I'm not doubting it, but that's not the norm by any means.
Isn't he cutting something like a 1.4 short time along with DRASTIC weight reduction too??? I'm not doubting it, but that's not the norm by any means.
Also, don't forget about Steve S. (SAR2K), who has made 451 rwhp with his own home-ported heads and a top secret, but big hydraulic cam and stock bottom-end.
Mike
Thread Starter
Registered User
Joined: Mar 2002
Posts: 4,827
From: Waynesboro, PA
Originally posted by engineermike
1.483 60ft. with a Vigilante 3200. Car weight is 3195 lb.
Also, don't forget about Steve S. (SAR2K), who has made 451 rwhp with his own home-ported heads and a top secret, but big hydraulic cam and stock bottom-end.
Mike
1.483 60ft. with a Vigilante 3200. Car weight is 3195 lb.
Also, don't forget about Steve S. (SAR2K), who has made 451 rwhp with his own home-ported heads and a top secret, but big hydraulic cam and stock bottom-end.
Mike
And as far as SAR2K is concerned, I remember him mentioning something about a 240ish duration on the cam. That's a big high revving cam, well matched to his heads. I do believe that Thunder Racing did his whole package though.
Registered User
Joined: Mar 2002
Posts: 2,743
From: Baton Rouge, LA, USA
Originally posted by Fastbird93
. . .I remember him mentioning something about a 240ish duration on the cam. That's a big high revving cam, well matched to his heads. I do believe that Thunder Racing did his whole package though.
. . .I remember him mentioning something about a 240ish duration on the cam. That's a big high revving cam, well matched to his heads. I do believe that Thunder Racing did his whole package though.
The cam was mostly Geoff's idea, and it is 240ish on the intake, but the ramp rates and lobe centers are what make the combo work. The duration is a very small part of the story.
It actually picked up torque and power everywhere in the rev range over the stock cam/heads. So much for the theory about big cams and ported heads losing low-end. . .
For the record, he dyno'd with Hooker LT's and purple hornies with the converter locked-up.
Mike
Registered User
Joined: Mar 2001
Posts: 2,521
From: Costa Mesa, CA
Done on a superflow dyno.
Home ported heads, LT4 HOTcam- 218*/228* duration, .525/.525 lift.
K&N intake, SLP headers, random tech cat, slowmaster exhaust, PCMforless tune etc.
Power is through an auto with a 2800 midwest stall.
333rwhp/ 357 rwtq
I think the torque may be off a little, not sure. The run was made at a local automotive college so I'm not sure on what shape the dyno is in.
Also best time in the 1/8 is 8.1, slip is in the signature.
Home ported heads, LT4 HOTcam- 218*/228* duration, .525/.525 lift.
K&N intake, SLP headers, random tech cat, slowmaster exhaust, PCMforless tune etc.
Power is through an auto with a 2800 midwest stall.
333rwhp/ 357 rwtq
I think the torque may be off a little, not sure. The run was made at a local automotive college so I'm not sure on what shape the dyno is in.
Also best time in the 1/8 is 8.1, slip is in the signature.
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