High altitude HP
Thread Starter
Burning Brakes
Joined: May 2019
Posts: 765
Likes: 182
High altitude HP
I have a 99 vert, only mods to the drive train are a bb exhaust and a honker intake. I live at 6000 feet , altitudes around the area in utah go from 5 to 7k feet.
So im down at least 15% in hp. A very experienced tuner advised me that nothing short of a super charger or turbos will do much for hp gain. He is going to dyno it and see if a tune can get me at least back to stock hp..it is running lean as the recent plug change shows. But that's a lot of hp to throw at a stock clutch, torque tube and diff.
I would be happy with a 100 hp gain and leave it at that..
Just don't know what will work up here.
here.Anyone with first hand actual knowledge of what I can do. He said even a cam and headers will not warrant the cost. I like his honesty as ..like he said..I can sell you stuff..but I don't think you will be happy.
So im down at least 15% in hp. A very experienced tuner advised me that nothing short of a super charger or turbos will do much for hp gain. He is going to dyno it and see if a tune can get me at least back to stock hp..it is running lean as the recent plug change shows. But that's a lot of hp to throw at a stock clutch, torque tube and diff.
I would be happy with a 100 hp gain and leave it at that..
Just don't know what will work up here.
here.Anyone with first hand actual knowledge of what I can do. He said even a cam and headers will not warrant the cost. I like his honesty as ..like he said..I can sell you stuff..but I don't think you will be happy.
Drifting
Joined: Sep 2022
Posts: 1,453
Likes: 1,118
Anything you can do to increase the HP at sea level you can do at altitude, just with similar comparable HP loss due to the higher altitude.
Even forced induction would make less HP at altitude, at a given boost level.
Heads, cam, intake, throttle body, every mod works at any altitude.
Even forced induction would make less HP at altitude, at a given boost level.
Heads, cam, intake, throttle body, every mod works at any altitude.
Instructor
Joined: Oct 2020
Posts: 140
Likes: 45
I'm at the same altitude as OP. I heave a heads cam car and it does just fine. The cost of heads and cam will be more expensive these days but to tell people it won't work at altitude isn't accurate. A super charger will give more power but also likely cost more.
Thread Starter
Burning Brakes
Joined: May 2019
Posts: 765
Likes: 182
I think his point was that while a sc costs more it delivers way more bang for your money. But its a lot of money. I figure a bigger radiator, clutch and headers are needed. Looking at around 14 k for all that.
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Melting Slicks
Joined: Mar 2023
Posts: 2,941
Likes: 1,692
From: North Coast
The object is to get more air and oxygen in the cylinders and under pressure.
Superchargers and turbos will do it but so will a higher lift cam and heads with bigger injectors.. The Turbo SC is just the easiest way.
Superchargers and turbos will do it but so will a higher lift cam and heads with bigger injectors.. The Turbo SC is just the easiest way.
Drifting
Joined: Aug 2014
Posts: 1,402
Likes: 394
From: Virginia
St. Jude Donor '18
How do you plan to use the car? It's 26+ years old. Definitely a cost vs. benefit vs. risk equation. Torque tube and rear end will be fine. But you absolutely need a clutch upgrade. Full HCI on mine, now over 500HP, and first thing I had to do was put a clutch in it. (Went with LS7 OEM)
Thread Starter
Burning Brakes
Joined: May 2019
Posts: 765
Likes: 182
It only has 46k miles on it. I'm not going to race it but I hang out with a lot of people ..most driving c7 and 8's...I feel like a slug out there..we go on road trips and while I'm not into speeding too fast..just trying to catch up to them..is impossible!