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

Changed plugs- what a difference....

Old Dec 18, 2004 | 04:39 AM
  #1  
qwiketz's Avatar
qwiketz
Thread Starter
Melting Slicks
20 Year Member
 
Joined: Jul 2004
Posts: 3,277
Likes: 32
From: Mission Viejo California
Default Changed plugs- what a difference....

I changed from a Autolite double platinum 606 plug to a champion 7401 plug gapped at .038. The plugs previously were gapped at .58 and worked like garbage. Before I had some pinging or spark blowout starting at about 4k rpm. Now I ran it clean up to the shift point. The power increase is very nice too. My car was pretty loose at the top of second gear which is about 55-65, and that's with the 335 pzeros out back.

On the to do list are the following:

-replace stock pump with a bigger in tank for added safety
-replace the 4 rib belt with a 6 rib(I don't know who worked on this thing previously, but I'd like to strangle them)
-install the inlet tube vain from greg @ blower works
-install water/alcohol injection
-reflash the pcm
-get some big drag radials
-get a 2500 rpm converter (i have a stock or about stock one now)
Reply
Old Dec 19, 2004 | 10:47 PM
  #2  
Mo_Bandy's Avatar
Mo_Bandy
Melting Slicks
20 Year Member
 
Joined: Dec 2000
Posts: 2,719
Likes: 60
From: Fremont Oh
Default

qwiketz,

Told ya so

That's good news, your started on a great setup. Need help, keep me posted....

Mo
Reply


Thread Tools
Search this Thread

All times are GMT -4. The time now is 10:10 PM.

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