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Unit 5302 · 06-07-2002, 07:28 PM

Sedanman, get a clue. I was addressing 302 LX Eric's post trying to say that rated hp was accurate. Anybody who keeps up on the competition even remotely knows the LS1 dyno's at least 280rwhp which equals about 340hp at the crank. I like to use crank numbers because they are unaffected by drivetrain issues. If you put an aluminum driveshaft on a car, you're gonna pick up a rwhp or two. Less rotational mass, more efficient driveline, and that equals more hp at the wheels.

Yep, the Cobra computer stinks. The cam isn't any weaker than the stock HO cam when the 1.7's are added into the equation.

HO cam with 1.6's. .444"/.444" 266*/266* or 266*/276*
Cobra cam with 1.7's. .479"/.479" 270*/270*

Granted, the Cobra cam has less overlap, but the duration is very comparable, and the lift is comparable to a B303. The Cobra cam would be a good cam in it's setup for the HO engine, but with the much better flowing GT-40 Irons, and Cobra intake, it just doesn't have the higher rpm pull with an LSA so wide. It's not like the cam is a total POS.

http://fordfan.com/gallery/chrisw.htm

http://www.svtmustangcobra.com/news/ddviii.htm

http://chris.kellnet.com/chambers/shift_points.htm

All I had to do was type some parameters into google, and stuff like this started popping up. An LX vert running 12.7@107 with nearly the same setup as Venumus. 280rwhp from a common bolt on, stock headed 93 Cobra (equals 340hp) and Jeff Chamber's was making 325rwhp with the stock GT-40 iron heads, E cam, and GT-40 intake in trophy stock trim. The first run was about 280rwhp as well. Those are dyno charts. I'm not BSing anybody, and I don't care if your combo wouldn't run, Sedanman. If you knew how to tune your car, it would have unless something was wrong with it.

As far as the springs being weak, the GT-40 iron equipped Cobra heads also came with stronger, higher lift GT-40 valvespring setups. After 100k, it certainly could be weak. As for the recommendation of the B303, there are certainly reasons for it. With 1.7:1 rockers, it has a reputation for performing well. The 1.7's on the E cam make lift a little high. About .530.

I must admit, I hadn't seen the ratings on the iron crate motor in a long time. It's newer GT-40P counterpart dyno's about where I quoted, and the Cobra head isn't weaker by 60hp.

06-07-2002, 07:28 PM	#9
Unit 5302 Registered Member Join Date: May 1999 Posts: 5,246	Sedanman, get a clue. I was addressing 302 LX Eric's post trying to say that rated hp was accurate. Anybody who keeps up on the competition even remotely knows the LS1 dyno's at least 280rwhp which equals about 340hp at the crank. I like to use crank numbers because they are unaffected by drivetrain issues. If you put an aluminum driveshaft on a car, you're gonna pick up a rwhp or two. Less rotational mass, more efficient driveline, and that equals more hp at the wheels. Yep, the Cobra computer stinks. The cam isn't any weaker than the stock HO cam when the 1.7's are added into the equation. HO cam with 1.6's. .444"/.444" 266/266 or 266/276 Cobra cam with 1.7's. .479"/.479" 270/270 Granted, the Cobra cam has less overlap, but the duration is very comparable, and the lift is comparable to a B303. The Cobra cam would be a good cam in it's setup for the HO engine, but with the much better flowing GT-40 Irons, and Cobra intake, it just doesn't have the higher rpm pull with an LSA so wide. It's not like the cam is a total POS. http://fordfan.com/gallery/chrisw.htm http://www.svtmustangcobra.com/news/ddviii.htm http://chris.kellnet.com/chambers/shift_points.htm All I had to do was type some parameters into google, and stuff like this started popping up. An LX vert running 12.7@107 with nearly the same setup as Venumus. 280rwhp from a common bolt on, stock headed 93 Cobra (equals 340hp) and Jeff Chamber's was making 325rwhp with the stock GT-40 iron heads, E cam, and GT-40 intake in trophy stock trim. The first run was about 280rwhp as well. Those are dyno charts. I'm not BSing anybody, and I don't care if your combo wouldn't run, Sedanman. If you knew how to tune your car, it would have unless something was wrong with it. As far as the springs being weak, the GT-40 iron equipped Cobra heads also came with stronger, higher lift GT-40 valvespring setups. After 100k, it certainly could be weak. As for the recommendation of the B303, there are certainly reasons for it. With 1.7:1 rockers, it has a reputation for performing well. The 1.7's on the E cam make lift a little high. About .530. I must admit, I hadn't seen the ratings on the iron crate motor in a long time. It's newer GT-40P counterpart dyno's about where I quoted, and the Cobra head isn't weaker by 60hp.