ported gt40's and stock camshaft

chiaronate · 04-10-2004, 06:43 PM

hey guys and girls. i have the opportunity to buy a ported set of gt40 cylinder heads for $500. i was wondering how much horsepower and torque i would make with the stock camshaft and 1.72 rockers, and how much horsepower and torque i would make with an e-303 camshaft. i don't know the extent of the port job yet, i'm just wondering if there would be a big difference with the e cam. thanks in advance

nate

Dark_5.0 · 04-10-2004, 10:12 PM

I dont think the e cam will make any more torque than a stock cam with 1.7 roller rockers. But the difference in HP is probably 20 so.

sedanman · 04-10-2004, 10:49 PM

I agree with Dark. Above 4500 the E cam is gonna really shine vs the stock with 1.7's. As for the heads do it, you will love the way your car feels afterwords its like a whole new world.

chiaronate · 04-11-2004, 08:09 AM

i'm looking forward to it. the e-303 is supposed to have torque peak at 2500 rpm. i thought it would have more torque through 5500. but i'm not very familiar with camshafts, is there a better one i can use with automatic transmission and stock torque converter?

sedanman · 04-11-2004, 10:01 AM

The E is a very good choice for your combo. The Gt40 heads and E cam work very well togheter. It may be a hair soft out of the hole but it will come on strong after that. It felt like peak torque cam about 3K when I had it in my car. Just put a gear in it and you will love it.

chiaronate · 04-11-2004, 11:36 AM

i have 3.73's, see my signature. thanks sedanman, i love the knowledge on here. no matter what question i have, there's always someone that knows the answer.

tmoss · 04-11-2004, 01:17 PM

You'd be pleasantly surprised at what a 2,600-3,000 rpm stall converter will do for it too.

chiaronate · 04-11-2004, 03:04 PM

i could definitely use it! darn automatics. all i'm getting with my current mods is a small tire chirp in second gear. i'm also thinking of having a manual valve-body installed so that i can enjoy 3rd gear instead of going from 2nd-4th. it sucks!

sedanman · 04-11-2004, 09:59 PM

Yeah a converter will do wonderful things for it. A manual valve body would be pretty cool too.

chiaronate · 04-12-2004, 07:12 AM

i'm sure i'll be happy with the heads for a while. a friend of mine is picking them up next month in pennsylvania.

Red5Ltr · 04-14-2004, 11:36 AM

What exactcally does a torque cpnvertor do, What is a manual valve body for? I have a shift kit in my 93' and I start in Low 1 goto Low 2 and back down to low 1. It's like shifting from first to second then low 2 is 3rd and fourth and then "O" drive. I get the same thing when I shift, but it's a hard shift at about 4000rpm and then "CHIRP" into second. I know if I had a manual tranny I could break real loose in second and chirp 3rd. I'm in debate what I want to do next. Look att my signature.

Thank for all your opinions.

John

Coupe50h · 04-14-2004, 05:15 PM

Quote:

Originally posted by sedanman
The E is a very good choice for your combo. The Gt40 heads and E cam work very well togheter. It may be a hair soft out of the hole but it will come on strong after that. It felt like peak torque cam about 3K when I had it in my car. Just put a gear in it and you will love it.

They sure do.
I cant stress having good prings enough though, the stock springs are crap, unless they are already upgraded.

I just went 107 mph 1/4, on firestones, t-5, 3,160lbs, my car really doesnt have enough gear, and actually launched better/harder on slicks with a stock cam, now i can bogg it just right off the line and it holds power in the upper rpm's better with the e- cam of course.

04-10-2004, 06:43 PM	#1
chiaronate Registered Member Join Date: Jul 2002 Location: watervliet, ny Posts: 105	ported gt40's and stock camshaft hey guys and girls. i have the opportunity to buy a ported set of gt40 cylinder heads for $500. i was wondering how much horsepower and torque i would make with the stock camshaft and 1.72 rockers, and how much horsepower and torque i would make with an e-303 camshaft. i don't know the extent of the port job yet, i'm just wondering if there would be a big difference with the e cam. thanks in advance nate __________________ 2000 mustang gt, silver with black interior and manual transmission current performance mods: 80mm pro-m with filter c&l plenum mac 70mm throttle body mac underdrive pulleys pro 5.0 shifter 3.90 gears dynomax super turbo mufflers diablosport predator programmer future performance mods: x-pipe with converters

04-10-2004, 10:12 PM	#2
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	I dont think the e cam will make any more torque than a stock cam with 1.7 roller rockers. But the difference in HP is probably 20 so. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

04-10-2004, 10:49 PM	#3
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	I agree with Dark. Above 4500 the E cam is gonna really shine vs the stock with 1.7's. As for the heads do it, you will love the way your car feels afterwords its like a whole new world. __________________ 04 Screamin Yellow Cobra KB 2.4 (585/556 pump 626/666 race) 00R brakes, DFX clutch, Level 5's, return fuel system, Lts with 3" exhuast, FR500 wheels and all the other fun stuff. GONE 1991 Lx sedan 5.0, 5spd (Liberty proshifted TKO) S-trim, Ported TF heads everything parted out.

04-11-2004, 08:09 AM	#4
chiaronate Registered Member Join Date: Jul 2002 Location: watervliet, ny Posts: 105	past 4500? i'm looking forward to it. the e-303 is supposed to have torque peak at 2500 rpm. i thought it would have more torque through 5500. but i'm not very familiar with camshafts, is there a better one i can use with automatic transmission and stock torque converter? __________________ 2000 mustang gt, silver with black interior and manual transmission current performance mods: 80mm pro-m with filter c&l plenum mac 70mm throttle body mac underdrive pulleys pro 5.0 shifter 3.90 gears dynomax super turbo mufflers diablosport predator programmer future performance mods: x-pipe with converters

04-11-2004, 10:01 AM	#5
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	The E is a very good choice for your combo. The Gt40 heads and E cam work very well togheter. It may be a hair soft out of the hole but it will come on strong after that. It felt like peak torque cam about 3K when I had it in my car. Just put a gear in it and you will love it. __________________ 04 Screamin Yellow Cobra KB 2.4 (585/556 pump 626/666 race) 00R brakes, DFX clutch, Level 5's, return fuel system, Lts with 3" exhuast, FR500 wheels and all the other fun stuff. GONE 1991 Lx sedan 5.0, 5spd (Liberty proshifted TKO) S-trim, Ported TF heads everything parted out.

04-11-2004, 11:36 AM	#6
chiaronate Registered Member Join Date: Jul 2002 Location: watervliet, ny Posts: 105	great mustang site! i have 3.73's, see my signature. thanks sedanman, i love the knowledge on here. no matter what question i have, there's always someone that knows the answer. __________________ 2000 mustang gt, silver with black interior and manual transmission current performance mods: 80mm pro-m with filter c&l plenum mac 70mm throttle body mac underdrive pulleys pro 5.0 shifter 3.90 gears dynomax super turbo mufflers diablosport predator programmer future performance mods: x-pipe with converters

04-11-2004, 01:17 PM	#7
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	You'd be pleasantly surprised at what a 2,600-3,000 rpm stall converter will do for it too. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

04-11-2004, 03:04 PM	#8
chiaronate Registered Member Join Date: Jul 2002 Location: watervliet, ny Posts: 105	for real i could definitely use it! darn automatics. all i'm getting with my current mods is a small tire chirp in second gear. i'm also thinking of having a manual valve-body installed so that i can enjoy 3rd gear instead of going from 2nd-4th. it sucks! __________________ 2000 mustang gt, silver with black interior and manual transmission current performance mods: 80mm pro-m with filter c&l plenum mac 70mm throttle body mac underdrive pulleys pro 5.0 shifter 3.90 gears dynomax super turbo mufflers diablosport predator programmer future performance mods: x-pipe with converters

04-11-2004, 09:59 PM	#9
sedanman Registered Member Join Date: Feb 1999 Location: Indianapolis, IN Posts: 963	Yeah a converter will do wonderful things for it. A manual valve body would be pretty cool too. __________________ 04 Screamin Yellow Cobra KB 2.4 (585/556 pump 626/666 race) 00R brakes, DFX clutch, Level 5's, return fuel system, Lts with 3" exhuast, FR500 wheels and all the other fun stuff. GONE 1991 Lx sedan 5.0, 5spd (Liberty proshifted TKO) S-trim, Ported TF heads everything parted out.

04-12-2004, 07:12 AM	#10
chiaronate Registered Member Join Date: Jul 2002 Location: watervliet, ny Posts: 105	i'm sure i'll be happy with the heads for a while. a friend of mine is picking them up next month in pennsylvania. __________________ 2000 mustang gt, silver with black interior and manual transmission current performance mods: 80mm pro-m with filter c&l plenum mac 70mm throttle body mac underdrive pulleys pro 5.0 shifter 3.90 gears dynomax super turbo mufflers diablosport predator programmer future performance mods: x-pipe with converters

04-14-2004, 11:36 AM	#11
Red5Ltr Registered Member Join Date: Mar 2004 Location: Sandusky, Ohio Posts: 50	What exactcally does a torque cpnvertor do, What is a manual valve body for? I have a shift kit in my 93' and I start in Low 1 goto Low 2 and back down to low 1. It's like shifting from first to second then low 2 is 3rd and fourth and then "O" drive. I get the same thing when I shift, but it's a hard shift at about 4000rpm and then "CHIRP" into second. I know if I had a manual tranny I could break real loose in second and chirp 3rd. I'm in debate what I want to do next. Look att my signature. Thank for all your opinions. John __________________ 93' Mustang w/ a stock 302 block, E303 cam, 3.73 gears, Pulleys, Edelbrock Performer upper and lower, Edlebrock 70mm throttle body, gt40 heads 1.94 intake, 1.60 exhaust, 1.6 roller rockers, American Thunder exhaust, BBK cold air intake, BBK off road H-pipe, BBK 1-5/8 shorties, AOD with shift kit and 15* timing.

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