LT1 +50 HP
Le Mans Master
Joined: Sep 2000
Posts: 6,473
Likes: 1
From: Cleveland
Cruise-In III Veteran
Cruise-In IV Veteran
Re: LT1 +50 HP (Nathan Plemons)
I'm fixing to prove that the throttle body didn't give me much of anything, as soon as I can get back to the dyno again.
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: LT1 +50 HP (Drewdog)
Abuot how much does each dyno run cost?
The second time I had the car dyno'd it cost me $50 from Clemons Racing in New Albany Indiana. We had a lot of people and we rented the dyno for the day and split the cost.
The third time I had my car dyno'd it was again at Clemons, but we had even more people. It worked out to like $35 a car for three pulls.
Each shop has it's own rules. For example Total Engine Airflow charges $100 an hour and you can do whatever you want. If you can tune the car go for it. They claim they will do partial hours, but I've never really talked to them about it. One of the local club members is in the process of trying to work out a group deal with TEA, we're shooting for $50 or less per car.
The group is really the best way to get a price break.
Burning Brakes
Joined: Aug 2001
Posts: 1,141
Likes: 1
From: McKinney Texas
Re: LT1 +50 HP (93aquaConvert)
I dont know what Andy1984 is talkin abought but there are a lot of bolt ons you can do to get more than 50hp out of a lt1..
Exhaust 10-15hp 10hp seems about right for a catback (max)
k@n filter open lid 10-15hp Maybe 5-10
longtubeheaders 20-30hp Headers a bolt-on?
pulleys 10-12hp Pulleys a bolt-on?
roller rockers 10-15hp ROLLER ROCKERS A BOLT-ON?!?!?!?
ported and polished intake manifold 10-15hp This is definately not a bolt-on either, but you would be closer to about 5hp, because the intake is so good in the first place. Plus, you don't polish LT1 heads/intake (ask Ed Wright or CNC Porters why)
52mm throttle body 10-15hp "What are you having a hard time believing vader? As far as the 52mm throttle body that yellow vette on the net with alot of mods claims .2 reduction with bbk 52mm"- your quote. 95% of people on this forum that have a 52mm TB say it doesnt help a stock engine or engine w/ bolt-ons AT ALL
adjustable fuel pressure regulator ? 94 and up vettes dont need one as Fuel Pressure is controlled by the OBDII System
bypass throttle body? 3-5hp
custom chip 10-30 hp Custom Ed Wright Dyno tune = approx. 15hp
That should be more than 50hp for just bolt ons huh?
:D
[B]All of the bolt-ons were 28-40hp according to my (and more accurate) calculations. :) You will learn a ton of stuff from people on this forum of what works or not :cheers:
Exhaust 10-15hp 10hp seems about right for a catback (max)
k@n filter open lid 10-15hp Maybe 5-10
longtubeheaders 20-30hp Headers a bolt-on?
pulleys 10-12hp Pulleys a bolt-on?
roller rockers 10-15hp ROLLER ROCKERS A BOLT-ON?!?!?!?
ported and polished intake manifold 10-15hp This is definately not a bolt-on either, but you would be closer to about 5hp, because the intake is so good in the first place. Plus, you don't polish LT1 heads/intake (ask Ed Wright or CNC Porters why)
52mm throttle body 10-15hp "What are you having a hard time believing vader? As far as the 52mm throttle body that yellow vette on the net with alot of mods claims .2 reduction with bbk 52mm"- your quote. 95% of people on this forum that have a 52mm TB say it doesnt help a stock engine or engine w/ bolt-ons AT ALL
adjustable fuel pressure regulator ? 94 and up vettes dont need one as Fuel Pressure is controlled by the OBDII System
bypass throttle body? 3-5hp
custom chip 10-30 hp Custom Ed Wright Dyno tune = approx. 15hp
That should be more than 50hp for just bolt ons huh?
:D
[B]All of the bolt-ons were 28-40hp according to my (and more accurate) calculations. :) You will learn a ton of stuff from people on this forum of what works or not :cheers:
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: LT1 +50 HP (Andy1983)
Why don't you polish LT1 heads and intake? I know plenty of people who clean up the heads and intake with fantastic results. Any mass produced casting has room for a lot of improvement.
The theory is to not just hog out the ports. Don't increase the size, just smooth it up, and you'll get better flow while maintaining your air velocity. The stock LT1 head is very nice with a little work. Professional "polishing" by a CNC machine will produce a lot of power and not sacrifice driveability.
The theory is to not just hog out the ports. Don't increase the size, just smooth it up, and you'll get better flow while maintaining your air velocity. The stock LT1 head is very nice with a little work. Professional "polishing" by a CNC machine will produce a lot of power and not sacrifice driveability.
Team Owner
Joined: Sep 2001
Posts: 62,139
Likes: 1,728
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: LT1 +50 HP (93aquaConvert)
What are you having a hard time believing vader? As far as the 52mm throttle body that yellow vette on the net with alot of mods claims .2 reduction with bbk 52mm :rolleyes:
Team Owner
Joined: Sep 2001
Posts: 62,139
Likes: 1,728
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: LT1 +50 HP (93aquaConvert)
Exhaust-about 10 by itself, with Longtubes, you could get anywhere from 20-25 for these two TOGETHER.
K&N open lid, 5hp max
pulleys, overrated, i wouldnt bet on more than a couple useable hp
port and polish, good mod but not a bolt on either, you could actually get 15-20hp from it
RR, not a bolt on, but you could get some good hp from it
52mm, nothing, unless Nathan becomes the first to get us some dyno #'s proving otherwise
TB bypass, 3-5hp
AFPR, not on that car, but it might give a couple on mine
chip, WITH all these above, then you might get some hp if you get Ed to burn one.
K&N open lid, 5hp max
pulleys, overrated, i wouldnt bet on more than a couple useable hp
port and polish, good mod but not a bolt on either, you could actually get 15-20hp from it
RR, not a bolt on, but you could get some good hp from it
52mm, nothing, unless Nathan becomes the first to get us some dyno #'s proving otherwise
TB bypass, 3-5hp
AFPR, not on that car, but it might give a couple on mine
chip, WITH all these above, then you might get some hp if you get Ed to burn one.
Instructor
Joined: Aug 2001
Posts: 131
Likes: 0
From: Minnesota
Re: LT1 +50 HP (vader86)
All the mods i stated are accurate possible gains if some arent "considered" bolt ons my bad. Ive had my vette 4 years and no i didnt get them out of a magazine or dumb mechanic ive seen or proof or claims of all gains.. If plemons can proove a 52mm throttle body doesent do anything sweet but most peaple aint gonna tell if it did aything unless they dyno or track test it which ive seen claims of .2 improvements track tested.. More cfm = more power anywhich way u look at it imo.
Ive seen you dreaming of getting a vette andy congrtas :D ... hows the women?
:jester
[Modified by 93aquaConvert, 6:36 AM 2/26/2002]
Ive seen you dreaming of getting a vette andy congrtas :D ... hows the women?
:jester
[Modified by 93aquaConvert, 6:36 AM 2/26/2002]
Safety Car
Joined: Jul 2001
Posts: 3,524
Likes: 1
From: Pinellas Florida Misfit
Cruise-In III Veteran
Re: LT1 +50 HP (93aquaConvert)
More CFM in isn't going to give you more power unless the motor needs it. And on a stock to mildly modified motor, a 52mm TB is worth nada.
Arisa on these forum has dyno runs on his 100% stock LT-4, there was no difference between the stock TB and a 52mm TB. Hopefully Nathan see's some improvment, but with his LT-4 hot cam and long tubes..the motor might be wanting more air. I personally don't think it's going to help much without heads.
Arisa on these forum has dyno runs on his 100% stock LT-4, there was no difference between the stock TB and a 52mm TB. Hopefully Nathan see's some improvment, but with his LT-4 hot cam and long tubes..the motor might be wanting more air. I personally don't think it's going to help much without heads.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
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
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
Race Director
Joined: May 2001
Posts: 14,165
Likes: 9
Re: LT1 +50 HP (Springer's 95)
I personally don't think it's going to help much without heads.
I think you're completely right. I only got the TB because I think it will help after I get the heads, and heads are in my future plans.
Team Owner
Joined: Sep 2001
Posts: 62,139
Likes: 1,728
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: LT1 +50 HP (93aquaConvert)
Springer is right, CFM doesnt equal hp unless it can get into the motor to be used. If you dont open up the heads then theyll still only allow a certain CFM to come in the intake.
