Just Got Headers In...
Thread Starter
Racer
Joined: Feb 2002
Posts: 451
Likes: 1
From: Mount Laurel NJ
Just Got Headers In...
well I finally got my headers installed. the car sure is louder, but it doesnt' really feel faster. In fact, it doesn't feel fast at all until I get over 80 mph. I think the headers actually made it slower from a standing start. I have to really gun it to go anywhere.... I'm confused.
it's a '90, and I got the Hooker long-tube headers.
it's a '90, and I got the Hooker long-tube headers.
Melting Slicks
Joined: Jun 2004
Posts: 3,032
Likes: 4
Originally Posted by Feenix566
well I finally got my headers installed. the car sure is louder, but it doesnt' really feel faster. In fact, it doesn't feel fast at all until I get over 80 mph. I think the headers actually made it slower from a standing start. I have to really gun it to go anywhere.... I'm confused.
it's a '90, and I got the Hooker long-tube headers.
it's a '90, and I got the Hooker long-tube headers.
I hope you have fun with your purchase, and that you'll grow to like em more... but I am still confused as to why everyone swears by Hooker for the l98....
Race Director
Joined: Sep 2004
Posts: 13,793
Likes: 0
From: St. Peters MO Sometimes you have to prove yourself by doing alot of killing or alot of dying...
Do you have a stock TPI motor? The long tube runner design of the intake pretty much limits the power band to around 4500rpm. The long tube headers are designed to give you maximum horsepower, but at the expense of the low end torque. This is particularly bad thing on stock TPI motors since they are torque mosters with a decent HP rating.
To get the most out of those headers, you're going to have to look at matching an intake and cam to the headers... and gears also.
This is where the quest for speed gets fun... and expensive. Check out TPIS or SLP for advice on next mods. Good luck in your journey
To get the most out of those headers, you're going to have to look at matching an intake and cam to the headers... and gears also.
This is where the quest for speed gets fun... and expensive. Check out TPIS or SLP for advice on next mods. Good luck in your journey
Thread Starter
Racer
Joined: Feb 2002
Posts: 451
Likes: 1
From: Mount Laurel NJ
yeah it's the stock TPI setup. I was planning on getting the TPIS MiniRam eventually. I knew the Hooker headers would shift the powerband to the upper RPMs, I just didn't realize how much that would affect the daily drivability of the car.
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
Team Owner
Joined: Sep 2002
Posts: 22,209
Likes: 12
From: OBAMA IS HITLER
Originally Posted by VetteNoob
I dont buy the TQ loss from 1 3/4" LT headers. I have TPIS headers and my dyno shows I gained HP and TQ across the board...
Melting Slicks
Joined: Jun 2004
Posts: 3,032
Likes: 4
Originally Posted by bradvette
I don't buy it either, and I'm kinda hyper about everything. I don't have real number like you do, but by buttmeter tells me what you're showing. However, it should be noted that a header install will really shine once the other engine mods are in place.....1 3/4" are best if your running at least 350-375chp
there isn't a torque loss, so much as a gain sacrifice. With the right size header for an L98, You'll get about the same HP gain, with a much larger torque gain...
and 1 3/4" are best if your running at least 383+ CI
Drifting
Joined: Jan 2003
Posts: 1,894
Likes: 3
From: Reading PA.
Yep you could use a sawzall I opted for a pair of tin snips to open it up then a smooth file for the finish work a little bit of semi gloss black and thats it. How about putting on some good plug wires and removing the cast alum piece directly behind the throttle body inside the plenum
Le Mans Master
Joined: Jan 2003
Posts: 6,187
Likes: 309
From: SIMSBURY CT
St. Jude Donor '07 thru '25
[QUOTE=VetteNoob]I dont buy the TQ loss from 1 3/4" LT headers. I have TPIS headers and my dyno shows I gained HP and TQ across the board.
Nice car + homepage! Looks like you also added "Ported/Siamesed Plenum & Runners" with the headers.
Nice car + homepage! Looks like you also added "Ported/Siamesed Plenum & Runners" with the headers.
Large Impressive Member
Joined: Jul 2003
Posts: 65,811
Likes: 71
From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
Originally Posted by Feenix566
well I finally got my headers installed. the car sure is louder, but it doesnt' really feel faster. In fact, it doesn't feel fast at all until I get over 80 mph. I think the headers actually made it slower from a standing start. I have to really gun it to go anywhere.... I'm confused.
it's a '90, and I got the Hooker long-tube headers.
it's a '90, and I got the Hooker long-tube headers.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
When you make air flow mods you need to bump fuel pressure a little to match fuel flow at WOT.
I you don't have an AFPR, set it to current fuel pressure and then bump pressure a few psi.
I you don't have an AFPR, set it to current fuel pressure and then bump pressure a few psi.
Melting Slicks
Joined: Jan 2003
Posts: 2,167
Likes: 0
From: What did the 5 fingers say to the face? SLAP!!
Originally Posted by VetteNoob
I dont buy the TQ loss from 1 3/4" LT headers. I have TPIS headers and my dyno shows I gained HP and TQ across the board.
SOTP can be deceiving. I highly doubt you lost anything down low. But like was also stated, you need to increase fuel pressure.
Le Mans Master
Joined: Jan 2002
Posts: 5,320
Likes: 4
From: Kyle TX (Because Mojo Made me fill it in)
Originally Posted by CTYANK2
Nice car + homepage! Looks like you also added "Ported/Siamesed Plenum & Runners" with the headers.
I think mikey whipreck said it pretty well. The 1 3/4" headers probably didnt gain as much TQ as the 1 5/8" ones would have, but I certainly didnt lose any.
