TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

Cam Specs

Thread Tools
 
Search this Thread
 
Old Mar 25, 2004 | 10:46 PM
  #1  
White91GTA's Avatar
Thread Starter
Senior Member
 
Joined: Dec 2003
Posts: 647
Likes: 0
From: Oklahoma
Car: 1991 Trans AM GTA
Engine: 5.7L TPI
Transmission: 700R4
Cam Specs

Just curious what everyone thought about a cam with the following specs:

296/304, .539/.558, 112

I have a guy that is very knowledgeable on engines and their components doing the research for me to get me the best setup he can find that will still be able to be driven on a daily basis.
Reply
Old Mar 26, 2004 | 06:54 AM
  #2  
Fevre's Avatar
Member
 
Joined: Jan 2003
Posts: 404
Likes: 0
From: Hartland MI
Car: 89 Formula
Engine: 355
Transmission: 700r4
Axle/Gears: 3.73
Depends on what the rest of your set up looks like. If you are running a stock set up then :nono: but if you have upgrades such as better intake, heads, exh, etc. then
Reply
Old Mar 26, 2004 | 07:12 AM
  #3  
White91GTA's Avatar
Thread Starter
Senior Member
 
Joined: Dec 2003
Posts: 647
Likes: 0
From: Oklahoma
Car: 1991 Trans AM GTA
Engine: 5.7L TPI
Transmission: 700R4
exhaust has been changed, running straight pipe into dual race bullets. planning to install an lt1 intake, and the heads are somewhere down the road. the guy that is researching the cam for me is also trying to find the best heads for the combo.
Reply
Old Mar 26, 2004 | 02:15 PM
  #4  
D Stroy H8's Avatar
Supreme Member
 
Joined: Jan 2002
Posts: 1,370
Likes: 0
From: Las Vegas, NV
Car: 1990 Iroc-Z
Engine: L98
Transmission: 700R4
By all means it is a good cam for your future setup. As of right now, with a stock L98 top end and good exhaust, it is still too much. Leave it in the box until you have your heads and intake ready to go
Reply
Old Mar 27, 2004 | 09:19 AM
  #5  
HiTech5's Avatar
Banned
iTrader: (4)
 
Joined: Dec 2000
Posts: 861
Likes: 0
From: ILL
Car: 1986 Pontiac TA
Engine: 383
Transmission: 700R4
Axle/Gears: 3.70
I like to look at the .050 duration numbers.

An advertise duration of 296/304 sounds like a big cam.

I am running a solid roller that has an advertised duration of 280 and .050 of 242.

If you decide to run that cam, try to bump compression to at least 10.5-1.

By the way, you WILL need a higher stall torque converter.

My cam of choice would be the LPE 74219.

www.geocities.com/dzperf
Reply
Old Mar 27, 2004 | 10:46 AM
  #6  
White91GTA's Avatar
Thread Starter
Senior Member
 
Joined: Dec 2003
Posts: 647
Likes: 0
From: Oklahoma
Car: 1991 Trans AM GTA
Engine: 5.7L TPI
Transmission: 700R4
Originally posted by HiTech5
I like to look at the .050 duration numbers.

An advertise duration of 296/304 sounds like a big cam.

I am running a solid roller that has an advertised duration of 280 and .050 of 242.

If you decide to run that cam, try to bump compression to at least 10.5-1.

By the way, you WILL need a higher stall torque converter.

My cam of choice would be the LPE 74219.

www.geocities.com/dzperf
What needs to be done to bump the compression up to 10.5:1. I am going to be getting the tranny rebuilt before I get the cam and will be running a 3500 stall TCI converter. Also, will I need bigger injectors for that cam?
Reply
Old Mar 27, 2004 | 10:48 AM
  #7  
formularpm's Avatar
Senior Member
20 Year Member
 
Joined: Sep 2002
Posts: 983
Likes: 55
From: Nebraska
Car: '89 Formula
Engine: 355
Transmission: 700R4
Axle/Gears: 9 bolt
Flat top pistons and your stock 64cc chambers will put you near 10.5:1 static CR.
Reply
Old Mar 27, 2004 | 01:35 PM
  #8  
D Stroy H8's Avatar
Supreme Member
 
Joined: Jan 2002
Posts: 1,370
Likes: 0
From: Las Vegas, NV
Car: 1990 Iroc-Z
Engine: L98
Transmission: 700R4
Hmmm, you could also go with a thinner head gasket. That will yield a half point in compression (bump it up 0.5).

They seal just fine, just put it on right.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jorlain
Tech / General Engine
6
Oct 8, 2015 01:57 AM
BAMiller
TPI
4
Sep 14, 2015 06:38 PM
ericjon262
Engine Swap
7
Sep 11, 2015 06:07 PM
angel2794
Engine Swap
11
Sep 8, 2015 06:22 PM
Formula_88AE
Engine Swap
1
Sep 3, 2015 01:47 PM




All times are GMT -5. The time now is 01:47 AM.