Just Got Back From TPIS
Burning Brakes
Joined: Jul 2006
Posts: 1,080
Likes: 2
From: Pittsburgh PA
What are they 24's? Could work. They will be done at about 350whp so 330-340 will be putting them at higher cycle duty but should be ok.
But its not a bad idea to replace old stock parts
But its not a bad idea to replace old stock parts
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 751
Likes: 0
From: Eau Claire Wisconsin
Yes, stock 24's, thats why I was thinking that an afpr would take up some slack. What fuel control if any is done through PCM tuning. (I know nothing about PCM tuning)
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 79
From: Monroe OH
NCM Sinkhole Donor
My guess is 12.8 sec 1/4 mile. Be sure to let us know how you do. Good Luck. 
Also, I've had good luck with TPIS so far and they are knowledgable about their products and the C4. As far as pricing, I think they are very competetive with other manufacturers. I've shopped them on the parts I have purchased and some parts are slightly more and some are slightly less. What I can say for sure is that I've not been disappointed with any of their products yet.
Also, I've had good luck with TPIS so far and they are knowledgable about their products and the C4. As far as pricing, I think they are very competetive with other manufacturers. I've shopped them on the parts I have purchased and some parts are slightly more and some are slightly less. What I can say for sure is that I've not been disappointed with any of their products yet.
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 751
Likes: 0
From: Eau Claire Wisconsin
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
With spray, I made 449 hp and 597 ft lbs at the wheels to run 10.97.
Best Mph on spray was 129.997, with 126 mph being typical.
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 751
Likes: 0
From: Eau Claire Wisconsin
My guess is 12.8 sec 1/4 mile. Be sure to let us know how you do. Good Luck.
Also, I've had good luck with TPIS so far and they are knowledgable about their products and the C4. As far as pricing, I think they are very competetive with other manufacturers. I've shopped them on the parts I have purchased and some parts are slightly more and some are slightly less. What I can say for sure is that I've not been disappointed with any of their products yet.
Also, I've had good luck with TPIS so far and they are knowledgable about their products and the C4. As far as pricing, I think they are very competetive with other manufacturers. I've shopped them on the parts I have purchased and some parts are slightly more and some are slightly less. What I can say for sure is that I've not been disappointed with any of their products yet.
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 751
Likes: 0
From: Eau Claire Wisconsin
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
Most of the et comes from the launch. 1.550 60' times are typical on a good day. I know a good converter guy
My combo uses the torque, as I only shift at 5200 rpm, and cross the line at 4800 rpm.On the spray, it is a different beast. Runs like it's got rabies.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
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
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 751
Likes: 0
From: Eau Claire Wisconsin
That is the same combo I am running now.
Most of the et comes from the launch. 1.550 60' times are typical on a good day. I know a good converter guy My combo uses the torque, as I only shift at 5200 rpm, and cross the line at 4800 rpm.
On the spray, it is a different beast. Runs like it's got rabies.
Most of the et comes from the launch. 1.550 60' times are typical on a good day. I know a good converter guy
My combo uses the torque, as I only shift at 5200 rpm, and cross the line at 4800 rpm.On the spray, it is a different beast. Runs like it's got rabies.
Max G’s
Joined: Nov 2008
Posts: 2,751
Likes: 79
From: Monroe OH
NCM Sinkhole Donor
That is good. I'm sure a lot of that time is due to the driver. I'm an autoxr, not a dragr, but have ran a couple of times down the drag strip. I have a a 700r4, 3.07 rar, and stock converter which is I think 1,200 stall. The best I've done has been 13.746. I did figure out I needed to put the car in third gear and let it run on out instead of letting it go to 4th. I'll try it next time I run the 1/4. I'm not sure about power last time I ran the 1/4, but I just got my car back from set up and it was dyno tuned at 250hp and 362 lb/ft torque at the wheels.
Burning Brakes
Joined: Jul 2006
Posts: 1,080
Likes: 2
From: Pittsburgh PA
My 3450lb car went 11.4's at 118-119mph with a 1.55 60 foot with 400whp. 150 shot which i dont think i was getting a complete 150hp shot out of it, i went 10.6's at 127-128
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 751
Likes: 0
From: Eau Claire Wisconsin
I think with these new parts my gears and converter will be more at home. I really do not want to go to 3.73's, I think 3.55's are a good compromise, especially with first gear of the 4L60.
I ran 4.56 gears with a TH350 and 26" tall M&H Racemasters on my 68 GS. Cruising at 45-50 mph on the highway is a PITA, going out of town with it was next to never.
The first gear launch in that car though, was breathtaking. I do miss my GS a little
I ran 4.56 gears with a TH350 and 26" tall M&H Racemasters on my 68 GS. Cruising at 45-50 mph on the highway is a PITA, going out of town with it was next to never.
The first gear launch in that car though, was breathtaking. I do miss my GS a little
Team Owner
Joined: Feb 2006
Posts: 24,460
Likes: 7
From: sw Ohio
TPIS, the people are like drug dealers. I got addicted. I need the parts. Headers, they lied and said "sure we have them in stock." Three weeks later I got them. At the time they were the best choice, they fit great, they are coated, they are overpriced and I had to have them. Miniram, way overpriced but I had to have it. Glad I got it, but damn a $1200 intake ?? Yes I would do it again because I"m hooked. Got to have good parts. I am probably not the only one. 
they have some great parts but they just cost too much. If I could get the whole mini ram for $800 i'd buy it.
Le Mans Master
Joined: Aug 2000
Posts: 8,838
Likes: 31
From: Australia
Safety Car
Joined: Apr 2002
Posts: 3,531
Likes: 1
From: Conroe TEXAS!
Cruise-In X Veteran
Ive had a few different experiences with TPIS. Lately they have been very helpful, they got me the parts I needed for the miniram install ASAP. (waterneck and throttle bracket)
I will second, Call them! Dont bother with E-mail.
Le Mans Master
Joined: Oct 2007
Posts: 9,700
Likes: 3,469
From: Akron Ohio
2025 Corvette of the Year Finalist - Modified
2024 C5 of the Year Winner - Modified
2023 C5 of the Year Finalist - Modified
2022 C5 of the Year Finalist - Modified
St. Jude Donor '09-'10-'11
I only had one experience with TPiS and it was very good. I like to call places anyway so I called and asked about a set of headers. They told me they didnt have any made and it would be a few weeks before they shipped. They came when expected and I never had any issues. Just one persons experience though.
Le Mans Master
Joined: Aug 2004
Posts: 5,141
Likes: 7
From: Metairie Louisiana
I was wondering what the specs on the ZZ409 were. Is this correct?
226/226, Lift .520/.520. 112 LSA
Last edited by rickneworleansla; Mar 30, 2009 at 03:33 PM.
Thread Starter
Burning Brakes
Joined: Jul 2007
Posts: 751
Likes: 0
From: Eau Claire Wisconsin
Yes those are correct. They list the lift with 1.5 rockers though. My 1.6's comes out to .555/.555 lift. Gotta love roller cams!