Too much cam
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
the OP never said anything about the rest of his setup, so i assume stock. and i'm saying its WAY too much cam for an otherwise stock setup. and i'm also saying its a waste of time and money -- and will only serve to hurt his driving enjoyment -- if the cam is the only thing going on...........tune, or no tune.
and i don't get the "nowadays" line......we're talking about a GEN I smallblock, that aint nowadays. it was 1991, and the tech is older than that.
and i don't get the "nowadays" line......we're talking about a GEN I smallblock, that aint nowadays. it was 1991, and the tech is older than that.
As far as "nowadays", it may be a gen 1 motor, but cam technology has come along way since 1991. Along with tuning technology.
Racer
Joined: Dec 2003
Posts: 454
Likes: 0
From: Double Oak TX
the OP never said anything about the rest of his setup, so i assume stock. and i'm saying its WAY too much cam for an otherwise stock setup. and i'm also saying its a waste of time and money -- and will only serve to hurt his driving enjoyment -- if the cam is the only thing going on...........tune, or no tune.
and i don't get the "nowadays" line......we're talking about a GEN I smallblock, that aint nowadays. it was 1991, and the tech is older than that.
and i don't get the "nowadays" line......we're talking about a GEN I smallblock, that aint nowadays. it was 1991, and the tech is older than that.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
BUT, In a TPI motor, with the stock intake, more aggressive cams will do nothing but sound good.
Thread Starter
Advanced
Joined: Aug 2006
Posts: 56
Likes: 0
From: Minneapolis Minnesota
This is the rest of it,
the OP never said anything about the rest of his setup, so i assume stock. and i'm saying its WAY too much cam for an otherwise stock setup. and i'm also saying its a waste of time and money -- and will only serve to hurt his driving enjoyment -- if the cam is the only thing going on...........tune, or no tune.
and i don't get the "nowadays" line......we're talking about a GEN I smallblock, that aint nowadays. it was 1991, and the tech is older than that.
and i don't get the "nowadays" line......we're talking about a GEN I smallblock, that aint nowadays. it was 1991, and the tech is older than that.
383 11.5 - 1 #30 Injectors Ajfpr, Y pipe with no precats, after markit muflers.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
Is that the combo? Then heck no its not too much cam.
BUT you may have been better off with a different type grind. More lift, same duration, more lobe seperation, higher #, like a 114 LSA, advanced 2 or 3 deg. Something like that would make more power and idle better, require less tuning time.
Of course, that does depend on the flow capabilities of the heads. No sense in a .575 lift cam if the heads peter out at .550
BUT you may have been better off with a different type grind. More lift, same duration, more lobe seperation, higher #, like a 114 LSA, advanced 2 or 3 deg. Something like that would make more power and idle better, require less tuning time.
Of course, that does depend on the flow capabilities of the heads. No sense in a .575 lift cam if the heads peter out at .550
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
Anyone tune it yet? Check with PCMforless. Alvin is the best around for mail order tunes for chip cars. We tune them but dont do the mail order stuff.
Last edited by edcmat-l1; Jan 5, 2007 at 06:59 PM.
Team Owner
Joined: Sep 2002
Posts: 22,209
Likes: 12
From: OBAMA IS HITLER
i made an azzumption (stock setup), and made an azz out of me
i apologize, ed, if i came on a bit strong.
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Burning Brakes
Joined: Nov 2004
Posts: 781
Likes: 0
Have we discerned whether or not the 'chip' has been re-tuned/programmed for this cammed 383?
The stock TPI Speed Density ECM is not going to like the cam's narrower 112 LSA, among other things. Any change in injector size can also cause problems.
This combo needs a 'chip' deleting the EGR, optimizing injector pulse, altering the timing curves, increasing the idle RPM, plus addressing a few other parameters based on valvetrain mods and intake/cam/head specs.
The stock TPI Speed Density ECM is not going to like the cam's narrower 112 LSA, among other things. Any change in injector size can also cause problems.
This combo needs a 'chip' deleting the EGR, optimizing injector pulse, altering the timing curves, increasing the idle RPM, plus addressing a few other parameters based on valvetrain mods and intake/cam/head specs.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
Been buildin motors along time (ASE Master Tech, 20 yrs exp). I can look at specs and tell you what it'll do in what car/motor. Aint braggin, just BTDT.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
Have we discerned whether or not the 'chip' has been re-tuned/programmed for this cammed 383?
The stock TPI Speed Density ECM is not going to like the cam's narrower 112 LSA, among other things. Any change in injector size can also cause problems.
This combo needs a 'chip' deleting the EGR, optimizing injector pulse, altering the timing curves, increasing the idle RPM, plus addressing a few other parameters based on valvetrain mods and intake/cam/head specs.
The stock TPI Speed Density ECM is not going to like the cam's narrower 112 LSA, among other things. Any change in injector size can also cause problems.
This combo needs a 'chip' deleting the EGR, optimizing injector pulse, altering the timing curves, increasing the idle RPM, plus addressing a few other parameters based on valvetrain mods and intake/cam/head specs.
Thread Starter
Advanced
Joined: Aug 2006
Posts: 56
Likes: 0
From: Minneapolis Minnesota
Thanks all for the input. Will sleep better tonight. Dyno tune with new chip burn may keep the cam in place and run out ok. Did not do my home work and paying for it. One says to do this then after the fact some one says you should have. My falt not asking all the right stuff up front and puting too much trust in any one. One said this one said that, when I get out the right info in the forum I get back some good stuff That I wish I looked for before I started this goat rope. Thanks again.
Racer
Joined: Oct 2006
Posts: 283
Likes: 0
Hey Edcmat. . . .
You seem to be knowledgeable. I would like a cam in my car that has a noticeable lope, yet is streetable with the stock converter. I will have the heads ported and polished to better flow at some point in time. What would you recommend. I have a 1996 LT-1 stock engine.
You seem to be knowledgeable. I would like a cam in my car that has a noticeable lope, yet is streetable with the stock converter. I will have the heads ported and polished to better flow at some point in time. What would you recommend. I have a 1996 LT-1 stock engine.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
Hey Edcmat. . . .
You seem to be knowledgeable. I would like a cam in my car that has a noticeable lope, yet is streetable with the stock converter. I will have the heads ported and polished to better flow at some point in time. What would you recommend. I have a 1996 LT-1 stock engine.
You seem to be knowledgeable. I would like a cam in my car that has a noticeable lope, yet is streetable with the stock converter. I will have the heads ported and polished to better flow at some point in time. What would you recommend. I have a 1996 LT-1 stock engine.
A noticeable lope and the stock converter are not gonna work well together. It might sound ok, but it will surge, lurch, not idle cleanly (in gear) because of the extra load against a tight converter. If you can, have your heads flowed. If you want lope, go with a converter.
A couple things to remember. 114 LSA and about 228 degrees @ .050 is about the point of lope. Something with that LSA and duration OR LESS would prob be OK with a stock converter.
Thread Starter
Advanced
Joined: Aug 2006
Posts: 56
Likes: 0
From: Minneapolis Minnesota
with
the OP never said anything about the rest of his setup, so i assume stock. and i'm saying its WAY too much cam for an otherwise stock setup. and i'm also saying its a waste of time and money -- and will only serve to hurt his driving enjoyment -- if the cam is the only thing going on...........tune, or no tune.
and i don't get the "nowadays" line......we're talking about a GEN I smallblock, that aint nowadays. it was 1991, and the tech is older than that.
and i don't get the "nowadays" line......we're talking about a GEN I smallblock, that aint nowadays. it was 1991, and the tech is older than that.
Drifting
Joined: May 2003
Posts: 1,730
Likes: 1
From: Charlotte NC
St. Jude Donor '05
Hey Ed,
Nice to see you over here!
I appreciate all the kind words. Ed is a great guy and has a really nice shop we've visited quite a few times in VA beach.