New cam vs Existing cam
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Senior Member
Joined: Apr 2003
Posts: 678
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From: Grand Terrace, CA
Car: 88 Camaro
Engine: 310 LG4
Transmission: 700R4 w/2200 stall
Axle/Gears: 3.42
New cam vs Existing cam
(I know i'll get flamed for this but...)
I got in my new torker II cam today. I entered the info from the cam card into desktop dyno to compare with my existing cam and the results are not what I expected.
With the new cam specs in place, Desktop dyno shows very low numbers vs what my old cam specs shows.
New cam data
http://store.summitracing.com/partde...=KeywordSearch
Existing cam data
http://store.summitracing.com/partde...=KeywordSearch
Why would this be?
I got in my new torker II cam today. I entered the info from the cam card into desktop dyno to compare with my existing cam and the results are not what I expected.
With the new cam specs in place, Desktop dyno shows very low numbers vs what my old cam specs shows.
New cam data
http://store.summitracing.com/partde...=KeywordSearch
Existing cam data
http://store.summitracing.com/partde...=KeywordSearch
Why would this be?
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iTrader: (3)
Joined: Sep 2003
Posts: 6,859
Likes: 14
From: Cypress, California
Car: 1989 GTA
Engine: 369 TPI
Transmission: 4L60E
Axle/Gears: 3.70 Nine Bolt
First question would be if you have an 1988 Camaro why are you not running a roller cam. This may lead to a 2nd question.
To answer your question a 214 degree cam is getting aggressive on a 310 cubic inch engine. The 232 degree cam is way aggressive on a 310 cubic inch engine and with your setup it probably can't use that much duration.
I'm running a 212 degree cam with a 350 cubic inch engine and making good horsepower.
To answer your question a 214 degree cam is getting aggressive on a 310 cubic inch engine. The 232 degree cam is way aggressive on a 310 cubic inch engine and with your setup it probably can't use that much duration.
I'm running a 212 degree cam with a 350 cubic inch engine and making good horsepower.
Last edited by 1989GTATransAm; Jul 8, 2005 at 04:26 PM.
Thread Starter
Senior Member
Joined: Apr 2003
Posts: 678
Likes: 0
From: Grand Terrace, CA
Car: 88 Camaro
Engine: 310 LG4
Transmission: 700R4 w/2200 stall
Axle/Gears: 3.42
I have an 88 camaro with an 85 Z28 motor, it wasnt a roller motor, 4BBL carb, LG4.
So you think that the cam I have now is better than my ne wone because of the duration? What all goes into effect on this problem?
So you think that the cam I have now is better than my ne wone because of the duration? What all goes into effect on this problem?
Thread Starter
Senior Member
Joined: Apr 2003
Posts: 678
Likes: 0
From: Grand Terrace, CA
Car: 88 Camaro
Engine: 310 LG4
Transmission: 700R4 w/2200 stall
Axle/Gears: 3.42
I'm a dummy, I was using seat-to-seat instead of .050 timing on the desktop dyno, so that is why my numbers were off. Once I fixed this, the results were much better than existing cam.
Supreme Member
Joined: Sep 2001
Posts: 6,111
Likes: 53
From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
In a 305 motor that cam is quite big. The lower rpm will be quite soft. You will need 10:1 compression, a very high stall converter and high rear gearing. I would install it in the motor with some extra advance. like installing it with the intake lobe centered on 101 to 103 deg BTC.
You're going to want a torque converter that gives an actual 3000+ stall speed behind your 310. Most converters are rated behind a healthy 350ci motor with more torque.
You're going to need a custom 9" converter.
I would use 4.10's.
3.42's and a 2200stall just are not going to work.
I'd dump that T-II intake at first chance. Old cam or new cam a Performer RPM will out perform it from idle right to 6000+rpm. It will fit under your stock hood with the right air cleaner.
You're going to want a torque converter that gives an actual 3000+ stall speed behind your 310. Most converters are rated behind a healthy 350ci motor with more torque.
You're going to need a custom 9" converter.
I would use 4.10's.
3.42's and a 2200stall just are not going to work.
I'd dump that T-II intake at first chance. Old cam or new cam a Performer RPM will out perform it from idle right to 6000+rpm. It will fit under your stock hood with the right air cleaner.
Last edited by F-BIRD'88; Jul 9, 2005 at 07:21 PM.
Thread Starter
Senior Member
Joined: Apr 2003
Posts: 678
Likes: 0
From: Grand Terrace, CA
Car: 88 Camaro
Engine: 310 LG4
Transmission: 700R4 w/2200 stall
Axle/Gears: 3.42
Originally posted by F-BIRD'88
In a 305 motor that cam is quite big. The lower rpm will be quite soft. You will need 10:1 compression, a very high stall converter and high rear gearing. I would install it in the motor with some extra advance. like installing it with the intake lobe centered on 101 to 103 deg BTC.
You're going to want a torque converter that gives an actual 3000+ stall speed behind your 310. Most converters are rated behind a healthy 350ci motor with more torque.
You're going to need a custom 9" converter.
I would use 4.10's.
3.42's and a 2200stall just are not going to work.
I'd dump that T-II intake at first chance. Old cam or new cam a Performer RPM will out perform it from idle right to 6000+rpm. It will fit under your stock hood with the right air cleaner.
In a 305 motor that cam is quite big. The lower rpm will be quite soft. You will need 10:1 compression, a very high stall converter and high rear gearing. I would install it in the motor with some extra advance. like installing it with the intake lobe centered on 101 to 103 deg BTC.
You're going to want a torque converter that gives an actual 3000+ stall speed behind your 310. Most converters are rated behind a healthy 350ci motor with more torque.
You're going to need a custom 9" converter.
I would use 4.10's.
3.42's and a 2200stall just are not going to work.
I'd dump that T-II intake at first chance. Old cam or new cam a Performer RPM will out perform it from idle right to 6000+rpm. It will fit under your stock hood with the right air cleaner.
So you dont think that cam would be any good with my setup then? I want something more agressive than my existing cam since it's only rated from 1000-4500, I can swap it for a 224/224 summit cam that is rated to 6500 (sum-1104) or a 224/234 (sum-1105), would one of those work better with my setup?
Edit: I guess I will keep my cam for now, it's much better than stock anyway. I just want the damn thing to run.
Last edited by 88_Import_Slaye; Jul 11, 2005 at 10:55 AM.
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Thread Starter
Senior Member
Joined: Apr 2003
Posts: 678
Likes: 0
From: Grand Terrace, CA
Car: 88 Camaro
Engine: 310 LG4
Transmission: 700R4 w/2200 stall
Axle/Gears: 3.42
Originally posted by sixpackmtrspts
you might be better off going with somne higher ratio rockers to increase lift of your existing cam, try that in the desktop dyno and see what you get
you might be better off going with somne higher ratio rockers to increase lift of your existing cam, try that in the desktop dyno and see what you get
However, I did put in a retard of 2 degree's for the cam and it showed an increase in the numbers. Is that something I should look into?
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