Time for a cam - which one for my cobo?

withamc · 02-04-2001, 11:31 PM

All right - I'm getting ready to tear into this thing once again and since I'm going to pull off the headers and intake, I figure it won't be much more work to just put in a better cam. I was thinking E-303, unless I hear some overwhelming response for a different one. I want it to pass smog, so I don't want to go too radical. Take a look at my sig and tell me what you think. Also, aside from the cam and gaskets, is there anything else I should be changing as well? Do you think I can get it all done in a weekend?

------------------
86 GT, GT40P heads, Cobra cam, 1.7 RR's, Cobra intake, 65mm TB, 73mm Vortech, 24# injectors, MAC GT40P headers, 2-1/2" BBK H-pipe (w/cats), Flowmasters, 3.55s.

Skyman · 02-05-2001, 12:12 AM

Are you going to run the E-303 with the 1.7's? I think thats not going to work with the flattop pistons in the 86GT. Definatly check into that if you plan on keeping the 1.7's. But if you want to pass smog, its a decent cam. I like mine pretty well.

Skyler

------------------
-1989 Saleen Mustang #406-
TFS Heads, Edelbrock intake, E-303, 3.73's, 1 5/8 shortys, Offroad-H, 2chamber flows, 36psi FPR, 15degrees timing, 70mm tb, 73mm maf, 24lb inj, Crank pulley, MSD6A, Alum driveshaft.

Added: B&M Ripper, Subframes, & Turndowns.

withamc · 02-05-2001, 01:30 AM

I have a rebuilt block with hypereutectic (or however you spell it) pistons, so I don't think clearance with an E cam is an issue.

Josh91 · 02-05-2001, 10:27 AM

The P heads like the E cam, but they also like the Crane 2031, which is made for 1.7's. I really like mine. Idles pretty mean and pulls to 6K easy. Its specs are 214/220 duration at .050 and .513/.529 lift.

------------------
1991 Mustang GT - Cobra Intake, FMS 65mm TB, C&L 73mm MAF, GT-40P heads, Crane 2031 cam, Crane 1.7rr, Built AOD, Art Carr 2400 non-lockup converter, Transgo shift kit, BBK chrome cold air, FMS 'P' headers, Pacesetter off-road H, BBK aluminum pulleys, 2-C Flows w/ dumps, 4.10's, Steeda STB, for now...

The Original GT-40P Tech Page

86GT · 02-05-2001, 10:28 AM

If you've got new pistons with reliefs in them, then I'd consider the e-cam with 1.7s. Since (by your sig) you've already got them, then you're that much further ahead. I'm not sure about custom grinds though, so I'll let the others go into that, but the E-cam sounds good to me with your combo.

Skankin · 02-05-2001, 01:55 PM

The E cam (crane 2040) is meant to be used with 1.6 rockers... and even then it's right at 0 overlap at 0.05". Going to the 1.7's could pose emmissions trouble (although properly tuned, it would probably pass).

The crane 2031 is meant for the 1.7's. It doesn't have quite as much intake duration, and it has a 112lsa, so it'll be much easier to pass emissions. It has a broader torque band, and still pulls to the rev limit, so it's a great street cam.

Although you've openned up the exhaust, I think the split duration would still be beneficial, since you're using cats.

You can get the cam kit (with springs etc) for $207 at R&E racing.

That is essentially the same as my combo, and I really like it. I milled 0.030" for 10:1 compression which is nice. Also, the 2031 maintains more cylinder pressure than the E, which should be better if you haven't increased compression.

------------------
'89.5 5L LX, hatch, Medium Canyon Red, 155K Km (No winters), 5sp, 3.08, GT interior, a/c, Alpine CD, K/N, Crane PS91, Walbro 190 LPH, March Pulleys, Mr. Gasket 180 therm (HP balanced), 3 core rad, MarkVIII fan, Variflow controller, Polygraphite front bushings, FMS-5300B springs, 6 KYB's, 73mm Calipers, Maximum Motorsport 4pt chassis brace, Western Motorsport Racing's Sub-frame connectors. Re-ringed bottom end, conv. motor mounts, melling oil pump, FMS-C50 waterpump, GT40P heads (blended, polli

yello95gt · 02-05-2001, 03:11 PM

I had an E cam in my 93 cobra with 1.7's and had no problems. But it also depends on what size valves you are running.As long as you are not using 2.02 valves you should be ok. Anderson now sells a kit to hold the lifters up so you do not have to pull the intake. Saves about 2-4 hours of labor. Hope this helps.

yello95gt · 02-05-2001, 03:12 PM

Also since your going to be in there, I would change the timing chain.

withamc · 02-05-2001, 04:29 PM

Do I need to buy any tools to degree the cam? Also, any websites that have instructions on degreeing the cam?

------------------
86 GT, GT40P heads, Cobra cam, 1.7 RR's, Cobra intake, 65mm TB, 73mm Vortech, 24# injectors, MAC GT40P headers, 2-1/2" BBK H-pipe (w/cats), Flowmasters, 3.55s.

MY91GT · 02-05-2001, 08:49 PM

How about an Anderson Cam? I was going to go with an E cam but they conviced me that their cam is the way to go....and I really dont regret it....give them a call and see what they say....if you want an edge over everyone else I would go with an custom cam or something along those lines...the N-2 cam will pass emissions.
Just an idea

------------------
TW Heads, TW Steet Intake, 65mm TB, 75mm MM, Anderson N-2 cam, melling oil pump, underdrives, paxton regulator, bbk 155 intank, 30lbers, motorsport alum rad, accell 8.8 wire, msd ignition and coil, 3.73 gear, WC t-5z, cobra clutch, K&N, hooker shorties, pacesetter h-pipe, and dynomax cat back, mac upper and lower control arms, no front sway bar. I think that's it. GO ILLINI!!!
12.985 @ 107.43 w/ 1.929 60' time on street tires.

Green92LX · 02-05-2001, 10:43 PM

I have an E-cam in my '92 and I swear by it, actually its a crane cam with the same specs...anyway, it sounds nasty with the Flowpaths and pulls like hell too!!! I can't wait to hear it with my S-Trim.

------------------
1992 5.0 LX, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,BBK equal length shorties,offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, 93 Cobra Spoiler

Daily driver: 89 Coupe with 205K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps, cut and welded stock shifter...and it runs like a champ.

withamc · 02-07-2001, 02:03 AM

Okay - I did it - I ordered the Crane 2031 and a degreeing kit. It should be in in about a week or so. It doesn't look like it's that difficult to do, then it's off to the Germanson Automotive for a dyno tune.

------------------
86 GT, GT40P heads, Cobra cam, 1.7 RR's, Cobra intake, 65mm TB, 73mm Vortech, 24# injectors, MAC GT40P headers, 2-1/2" BBK H-pipe (w/cats), Flowmasters, 3.55s.
**************
Crane 2031 on order

yello95gt · 02-07-2001, 04:03 PM

you do not have to degree it. just line the dots on the timing chain up and stick it in.

02-04-2001, 11:31 PM	#1
withamc Registered Member Join Date: Aug 2000 Location: Thousand Oaks, CA Posts: 396	Time for a cam - which one for my cobo? All right - I'm getting ready to tear into this thing once again and since I'm going to pull off the headers and intake, I figure it won't be much more work to just put in a better cam. I was thinking E-303, unless I hear some overwhelming response for a different one. I want it to pass smog, so I don't want to go too radical. Take a look at my sig and tell me what you think. Also, aside from the cam and gaskets, is there anything else I should be changing as well? Do you think I can get it all done in a weekend? ------------------ 86 GT, GT40P heads, Cobra cam, 1.7 RR's, Cobra intake, 65mm TB, 73mm Vortech, 24# injectors, MAC GT40P headers, 2-1/2" BBK H-pipe (w/cats), Flowmasters, 3.55s.

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02-05-2001, 12:12 AM	#2
Skyman I need 110mph Trap Speed! Join Date: Feb 1999 Location: So, CA Posts: 4,315	Are you going to run the E-303 with the 1.7's? I think thats not going to work with the flattop pistons in the 86GT. Definatly check into that if you plan on keeping the 1.7's. But if you want to pass smog, its a decent cam. I like mine pretty well. Skyler ------------------ -1989 Saleen Mustang #406- TFS Heads, Edelbrock intake, E-303, 3.73's, 1 5/8 shortys, Offroad-H, 2chamber flows, 36psi FPR, 15degrees timing, 70mm tb, 73mm maf, 24lb inj, Crank pulley, MSD6A, Alum driveshaft. Added: B&M Ripper, Subframes, & Turndowns.

02-05-2001, 01:30 AM	#3
withamc Registered Member Join Date: Aug 2000 Location: Thousand Oaks, CA Posts: 396	I have a rebuilt block with hypereutectic (or however you spell it) pistons, so I don't think clearance with an E cam is an issue.

02-05-2001, 10:27 AM	#4
Josh91 Registered Member Join Date: Nov 1998 Location: Salina, KS Posts: 83	The P heads like the E cam, but they also like the Crane 2031, which is made for 1.7's. I really like mine. Idles pretty mean and pulls to 6K easy. Its specs are 214/220 duration at .050 and .513/.529 lift. ------------------ 1991 Mustang GT - Cobra Intake, FMS 65mm TB, C&L 73mm MAF, GT-40P heads, Crane 2031 cam, Crane 1.7rr, Built AOD, Art Carr 2400 non-lockup converter, Transgo shift kit, BBK chrome cold air, FMS 'P' headers, Pacesetter off-road H, BBK aluminum pulleys, 2-C Flows w/ dumps, 4.10's, Steeda STB, for now... The Original GT-40P Tech Page

02-05-2001, 10:28 AM	#5
86GT Sniffed too much n20 Join Date: Oct 1998 Location: Ont, Canada Posts: 1,018	If you've got new pistons with reliefs in them, then I'd consider the e-cam with 1.7s. Since (by your sig) you've already got them, then you're that much further ahead. I'm not sure about custom grinds though, so I'll let the others go into that, but the E-cam sounds good to me with your combo.

02-05-2001, 01:55 PM	#6
Skankin Registered Member Join Date: Dec 1998 Location: London, Ontario, Canada Posts: 1,349	The E cam (crane 2040) is meant to be used with 1.6 rockers... and even then it's right at 0 overlap at 0.05". Going to the 1.7's could pose emmissions trouble (although properly tuned, it would probably pass). The crane 2031 is meant for the 1.7's. It doesn't have quite as much intake duration, and it has a 112lsa, so it'll be much easier to pass emissions. It has a broader torque band, and still pulls to the rev limit, so it's a great street cam. Although you've openned up the exhaust, I think the split duration would still be beneficial, since you're using cats. You can get the cam kit (with springs etc) for $207 at R&E racing. That is essentially the same as my combo, and I really like it. I milled 0.030" for 10:1 compression which is nice. Also, the 2031 maintains more cylinder pressure than the E, which should be better if you haven't increased compression. ------------------ '89.5 5L LX, hatch, Medium Canyon Red, 155K Km (No winters), 5sp, 3.08, GT interior, a/c, Alpine CD, K/N, Crane PS91, Walbro 190 LPH, March Pulleys, Mr. Gasket 180 therm (HP balanced), 3 core rad, MarkVIII fan, Variflow controller, Polygraphite front bushings, FMS-5300B springs, 6 KYB's, 73mm Calipers, Maximum Motorsport 4pt chassis brace, Western Motorsport Racing's Sub-frame connectors. Re-ringed bottom end, conv. motor mounts, melling oil pump, FMS-C50 waterpump, GT40P heads (blended, polli

02-05-2001, 03:11 PM	#7
yello95gt Registered Member Join Date: Jun 2000 Location: jackson,Ms 39208 Posts: 20	I had an E cam in my 93 cobra with 1.7's and had no problems. But it also depends on what size valves you are running.As long as you are not using 2.02 valves you should be ok. Anderson now sells a kit to hold the lifters up so you do not have to pull the intake. Saves about 2-4 hours of labor. Hope this helps.

02-05-2001, 03:12 PM	#8
yello95gt Registered Member Join Date: Jun 2000 Location: jackson,Ms 39208 Posts: 20	Also since your going to be in there, I would change the timing chain.

02-05-2001, 04:29 PM	#9
withamc Registered Member Join Date: Aug 2000 Location: Thousand Oaks, CA Posts: 396	Do I need to buy any tools to degree the cam? Also, any websites that have instructions on degreeing the cam? ------------------ 86 GT, GT40P heads, Cobra cam, 1.7 RR's, Cobra intake, 65mm TB, 73mm Vortech, 24# injectors, MAC GT40P headers, 2-1/2" BBK H-pipe (w/cats), Flowmasters, 3.55s.

02-05-2001, 08:49 PM	#10
MY91GT Registered Member Join Date: Mar 1999 Location: University of Illinois-Urbana/Champaign Posts: 370	How about an Anderson Cam? I was going to go with an E cam but they conviced me that their cam is the way to go....and I really dont regret it....give them a call and see what they say....if you want an edge over everyone else I would go with an custom cam or something along those lines...the N-2 cam will pass emissions. Just an idea ------------------ TW Heads, TW Steet Intake, 65mm TB, 75mm MM, Anderson N-2 cam, melling oil pump, underdrives, paxton regulator, bbk 155 intank, 30lbers, motorsport alum rad, accell 8.8 wire, msd ignition and coil, 3.73 gear, WC t-5z, cobra clutch, K&N, hooker shorties, pacesetter h-pipe, and dynomax cat back, mac upper and lower control arms, no front sway bar. I think that's it. GO ILLINI!!! 12.985 @ 107.43 w/ 1.929 60' time on street tires.

02-05-2001, 10:43 PM	#11
Green92LX Registered Member Join Date: Jun 1999 Location: North Haven,CT Posts: 336	I have an E-cam in my '92 and I swear by it, actually its a crane cam with the same specs...anyway, it sounds nasty with the Flowpaths and pulls like hell too!!! I can't wait to hear it with my S-Trim. ------------------ 1992 5.0 LX, Edelbrock 6037 Heads, Cobra Intake,E-303, 1.6 Roller Rockers,65MM Holley TB, 75 MM Pro M Mass Air, 190 LPH FP w/ 24 lb injectors,BBK equal length shorties,offroad h-pipe,Mac Flowpath Mufflers, Pro 5.0, 3.73's,Motorsport "C" springs,welded subframe connectors, Ponies w/ 225/50 Nittos, 93 Cobra Spoiler Daily driver: 89 Coupe with 205K plus, BBK shorties,offroad h-pipe,2-chamber flowmasters with dumps, cut and welded stock shifter...and it runs like a champ.

02-07-2001, 02:03 AM	#12
withamc Registered Member Join Date: Aug 2000 Location: Thousand Oaks, CA Posts: 396	Okay - I did it - I ordered the Crane 2031 and a degreeing kit. It should be in in about a week or so. It doesn't look like it's that difficult to do, then it's off to the Germanson Automotive for a dyno tune. ------------------ 86 GT, GT40P heads, Cobra cam, 1.7 RR's, Cobra intake, 65mm TB, 73mm Vortech, 24# injectors, MAC GT40P headers, 2-1/2" BBK H-pipe (w/cats), Flowmasters, 3.55s. ************** Crane 2031 on order

02-07-2001, 04:03 PM	#13
yello95gt Registered Member Join Date: Jun 2000 Location: jackson,Ms 39208 Posts: 20	you do not have to degree it. just line the dots on the timing chain up and stick it in.