Hot cam tuning
Thread Starter
Burning Brakes
Joined: Dec 2003
Posts: 770
Likes: 0
From: Madison Mississippi
Hot cam tuning
I finally got all the idle bugs worked out and the comp cam pro magnums adjusted down (decided it was easier to adjust them with the engine running, messy but effective) and the computer aparrantly went into learn mode because the idle gradually smoothed out. My situation now, is the final tuning, she idles rich and at cruise speed it lopes a little. I am wondering where to go from here. The idle is rock solid @ 900 (Auto) and sounds mean, real mean. The cam really opens up around 3000 rpm (unlike stock) and it shifts @ 5500 which seems like it is too soon, considering how hard this puppy is pulling! Will a chip re-burn correct this shift and/or rich idle? I am using a hypertech thermomaster2 with 160 degree stadt. Any suggestions or comments are welcome. Heck, I am on the learning curve here! I want to max out this set-up. Oh yeah, I believe a 3.73 gear change would help too. Your thoughts? I only have the 1.6 RR's, ported intake, lt-4 cam.
:auto:
:auto:
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Re: Hot cam tuning (RUBYREDVETTECARD)
Well I will answer 1 of your questions. The WOT shift is controlled by the transmission govenor on 93 and earlier. 94 and up are by the computer. I got ski-down-it to reprogram my chip.
Le Mans Master
Joined: Sep 2001
Posts: 7,928
Likes: 1
From: More cowbell...
St. Jude Donor '04
Re: Hot cam tuning (RUBYREDVETTECARD)
With the hot cam you are definitely going to need a chip reburn..
The chip reburn will fix the rich idle, spark advance, overall fuel maps (at various RPMs) among other things.. Make sure you have an experienced tuner do your work for you (sounds like Ski-down-it is the guy to go to around here.. :) have heard good things about him..).
-Mark
The chip reburn will fix the rich idle, spark advance, overall fuel maps (at various RPMs) among other things.. Make sure you have an experienced tuner do your work for you (sounds like Ski-down-it is the guy to go to around here.. :) have heard good things about him..).
-Mark
Thread Starter
Burning Brakes
Joined: Dec 2003
Posts: 770
Likes: 0
From: Madison Mississippi
Re: Hot cam tuning (MarkLT1)
Thats good news, I would definately like to fine tune this set-up. If anyone is wondering about the hot cam pulling strong, forget about it. It pulls hard and sounds even better. Not sure if it what some racers would like, but for a car that drives on the street on weekends it's just perfect. :hurray:
Burning Brakes
Joined: Nov 2002
Posts: 1,239
Likes: 1
From: Las Vegas NV
Re: Hot cam tuning (RUBYREDVETTECARD)
Does your car have a PCM or ECM? I believe 93 was a split year meaning you may have an electronic shift trans. Either way shift manuely @ 6K and get your car programmed by SKI and all will be well. :thumbs:
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Drifting
Joined: Jul 2002
Posts: 1,273
Likes: 0
From: Olathe, KS USA
Re: Hot cam tuning (JAKE)
What are the Hot Cam specs again.
Advertised Duration; duration at .050, LSA and valve lifts.
I had those numbers but can't find them now.
Thanks,
Jake
Advertised Duration; duration at .050, LSA and valve lifts.
I had those numbers but can't find them now.
Thanks,
Jake
:seeya
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: Hot cam tuning (JAKE)
What are the Hot Cam specs again.
Advertised Duration; duration at .050, LSA and valve lifts.
I had those numbers but can't find them now.
Thanks,
Jake
Advertised Duration; duration at .050, LSA and valve lifts.
I had those numbers but can't find them now.
Thanks,
Jake
Le Mans Master
Joined: Feb 2000
Posts: 9,715
Likes: 27
From: Kempner Texas
Re: Hot cam tuning (Nathan Plemons)
What are the Hot Cam specs again.
Advertised Duration; duration at .050, LSA and valve lifts.
I had those numbers but can't find them now.
Thanks,
Jake
218/228 .525/.525 with 1.6 rockers. 112 LSA
Advertised Duration; duration at .050, LSA and valve lifts.
I had those numbers but can't find them now.
Thanks,
Jake
218/228 .525/.525 with 1.6 rockers. 112 LSA
I found another post that gives the valve lift at .525 across with 1.5 rockers, not 1.6. Which is correct?
Jake
Drifting
Joined: Jul 2002
Posts: 1,273
Likes: 0
From: Olathe, KS USA
Re: Hot cam tuning (JAKE)
What are the Hot Cam specs again.
Advertised Duration; duration at .050, LSA and valve lifts.
I had those numbers but can't find them now.
Thanks,
Jake
218/228 .525/.525 with 1.6 rockers. 112 LSA
Thanks.
I found another post that gives the valve lift at .525 across with 1.5 rockers, not 1.6. Which is correct?
Jake
Advertised Duration; duration at .050, LSA and valve lifts.
I had those numbers but can't find them now.
Thanks,
Jake
218/228 .525/.525 with 1.6 rockers. 112 LSA
Thanks.
I found another post that gives the valve lift at .525 across with 1.5 rockers, not 1.6. Which is correct?
Jake
1.5 rocker lift is .492 check my link posted above.
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Re: Hot cam tuning (crheinish)
Does your car have a PCM or ECM? I believe 93 was a split year meaning you may have an electronic shift trans. Either way shift manuely @ 6K and get your car programmed by SKI and all will be well. :thumbs:
