C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Mods but no tune question

Thread Tools
 
Search this Thread
 
Old Oct 23, 2005 | 12:57 AM
  #1  
Caleb56's Avatar
Caleb56
Thread Starter
Racer
 
Joined: Oct 2003
Posts: 263
Likes: 0
From: jojobe Tx
Default Mods but no tune question

compression boosted 9:5 to 11:0
rebuilt motor
fully balanced
floating connecting rods
dual purpose street and track cam
hedman headers
centerforce dual friction clutch
cf pressure plate
cf flywheel
lingenfelter intake manifold
lingenfelter superram
52mm throttle body
afpr
heads 48 cc to 56cc heads fully ported and polished
roller rockers
msd wires
dual valve springs with titanium retainers
cloyes true timing chain
airfoil
k and n airfilter
frisbee gone
but no tune. How much hp and torque am i losing with no tune?
Reply
Old Oct 23, 2005 | 01:05 AM
  #2  
cv67's Avatar
cv67
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Default

Impossible to tell, I highly recommed getting one soon.
Need:
-Cam specs
-Year, displacement
-What brand heads? Any flow #'s?
Reply
Old Oct 23, 2005 | 01:47 AM
  #3  
Caleb56's Avatar
Caleb56
Thread Starter
Racer
 
Joined: Oct 2003
Posts: 263
Likes: 0
From: jojobe Tx
Default

Originally Posted by cuisinartvette
Impossible to tell, I highly recommed getting one soon.
Need:
-Cam specs
-Year, displacement
-What brand heads? Any flow #'s?
valve lift 462-470 lobe center 106-114 duration 210-215
1989 350
stock heads, bigger valves, dual valve springs, tit retainers
48ccto56cc
stock injectors
anyone know of an affordable tuner?
Reply
Old Oct 23, 2005 | 01:50 AM
  #4  
Morley's Avatar
Morley
Drifting
 
Joined: Mar 2005
Posts: 1,923
Likes: 0
From: GA
Default

forget how much HP you are loosing from no tune....How much damage are you doing to the engine without a tune?
Reply
Old Oct 23, 2005 | 01:52 AM
  #5  
Caleb56's Avatar
Caleb56
Thread Starter
Racer
 
Joined: Oct 2003
Posts: 263
Likes: 0
From: jojobe Tx
Default

Originally Posted by Morley
forget how much HP you are loosing from no tune....How much damage are you doing to the engine without a tune?
I didnt know it was that serious. Should i stop driving it till its done?
Reply
Old Oct 23, 2005 | 02:51 AM
  #6  
Zix's Avatar
Zix
Le Mans Master
15 Year Member
 
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
Default

Well, if it's running too rich you can wash out the rings, and if it's running too lean you can burn an exhaust valve. Among other things. I would get it tuned as soon as you can to be on the safe side. A mail-order tune is easy and a good place to start, you can contact a few people;

www.pcmforless.com
www.fastchip.com

I've had good luck with both of them, get on the phone and get it done!!
Reply
Old Oct 23, 2005 | 03:33 AM
  #7  
Caleb56's Avatar
Caleb56
Thread Starter
Racer
 
Joined: Oct 2003
Posts: 263
Likes: 0
From: jojobe Tx
Default

Originally Posted by Zix
Well, if it's running too rich you can wash out the rings, and if it's running too lean you can burn an exhaust valve. Among other things. I would get it tuned as soon as you can to be on the safe side. A mail-order tune is easy and a good place to start, you can contact a few people;

www.pcmforless.com
www.fastchip.com

I've had good luck with both of them, get on the phone and get it done!!
Ordered it right now and put your name as the one who referred me. Thanx
Reply

Get notified of new replies

To Mods but no tune question





All times are GMT -4. The time now is 12:21 AM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE