Next Mod?
Thread Starter
Heel & Toe
Joined: Sep 2020
Posts: 15
Likes: 3
Next Mod?
Got a 98 with
315 gears from 273 factory
Ported and polished heads
Vararam intake
SS long tube headers
Muffler delete (straight)
Texas speed cam 212/218
2200 stall converter
Dyno tuned
What should be next?
Also question about fuel... what should i be running?
315 gears from 273 factory
Ported and polished heads
Vararam intake
SS long tube headers
Muffler delete (straight)
Texas speed cam 212/218
2200 stall converter
Dyno tuned
What should be next?
Also question about fuel... what should i be running?
Thread Starter
Heel & Toe
Joined: Sep 2020
Posts: 15
Likes: 3
i use the car 99% for freeway driving. So looking for increase my 30mph-140 speed...I feel the gears and stall i have now are pretty good (unless its cold or damp) i can usually keep traction at 55+ if i stomp on it. But i have broke them loose doing 100 when it was damp... i got new nt05s the next day lol old ones were bald
Safety Car
Joined: Nov 2007
Posts: 3,882
Likes: 2,934
From: N.E. Suburb MN
i use the car 99% for freeway driving. So looking for increase my 30mph-140 speed...I feel the gears and stall i have now are pretty good (unless its cold or damp) i can usually keep traction at 55+ if i stomp on it. But i have broke them loose doing 100 when it was damp... i got new nt05s the next day lol old ones were bald
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
Heel & Toe
Joined: Sep 2020
Posts: 15
Likes: 3
i bought this car with these mods so i actually didnt choose this setup.. but i suppose if i was going to change out the intke/TB id probably look into forced induction....just really wasnt trying to spend THAT much lol
Instructor
Joined: Sep 2020
Posts: 200
Likes: 76
Well being a 98 it won't even have a LS6 intake on it (all 01-04 cars got the Z06's LS6 intake) so it's being choked quite a bit with that original LS1 intake considering all the other mods. I mean you could throw nitrous at it too.
Thread Starter
Heel & Toe
Joined: Sep 2020
Posts: 15
Likes: 3
I think im okay without the nos tho lol
Thanks for the info.
How much is it gonna run me to get it tuned? Is this gonna be a trip to the dyno or a mail in my pcm type of tune?
Instructor
Joined: Sep 2020
Posts: 200
Likes: 76
Well you can certainly just swap an LS6 intake (if you can find one) to your motor with no other upgrades and gain some power.
There is a bunch of ways to go about this though, Dorman 615-900 cost less than a 615-901 but the -901 has a 90mm TB opening for instance. If you go for a 90/92mm intake then peakspeedshop.com has ported reconditioned 90mm TBs for $425 ready to go or they will port your stock TB for $125 if you decide to stick with an LS6 or -900 intake. If you move up to a LS2 90mm TB you will also need a TB adapter harness which is gonna be around $60.
I'd say that if you can find $1,500 dollars to go with the FAST/ported 90mm TB setup. This will net you the most gains and is really the cheapest thing you can do besides forced induction to get further meaningful power increases. To save about $300 and sacrifice a few hp by comparison Rockauto has the -901 for $657.
If you can't find a LS6 intake then a Dorman -900 and ported stock TB are your next best option for the least amount of cash.
There is a bunch of ways to go about this though, Dorman 615-900 cost less than a 615-901 but the -901 has a 90mm TB opening for instance. If you go for a 90/92mm intake then peakspeedshop.com has ported reconditioned 90mm TBs for $425 ready to go or they will port your stock TB for $125 if you decide to stick with an LS6 or -900 intake. If you move up to a LS2 90mm TB you will also need a TB adapter harness which is gonna be around $60.
I'd say that if you can find $1,500 dollars to go with the FAST/ported 90mm TB setup. This will net you the most gains and is really the cheapest thing you can do besides forced induction to get further meaningful power increases. To save about $300 and sacrifice a few hp by comparison Rockauto has the -901 for $657.
If you can't find a LS6 intake then a Dorman -900 and ported stock TB are your next best option for the least amount of cash.
Last edited by Autotragic; Sep 27, 2020 at 12:24 PM.
Thread Starter
Heel & Toe
Joined: Sep 2020
Posts: 15
Likes: 3
I can only imagine how much fun that is. I use to be mildly obsessed with Grandprix GTPs really loved modding those and that SC wine is addicting. I cant imagine how awesome it would be on my vette. But rate now i think the 6-7k for the kit is out of my price range... unfortunately.
Banned Scam/Spammer
Joined: May 2007
Posts: 15,685
Likes: 1,330
From: Machineguns, because I don’t compromise
I’d save money for repairs, or maybe some paint restoration and protection.
Car past 20 years old, maybe well kept and now you have it. Have the paint corrected professionally, maybe have clear film added to protect from chips, ceramic coating to make it look wet always.
Car past 20 years old, maybe well kept and now you have it. Have the paint corrected professionally, maybe have clear film added to protect from chips, ceramic coating to make it look wet always.
Thread Starter
Heel & Toe
Joined: Sep 2020
Posts: 15
Likes: 3
I specifically asked a question regarding performance modification. But thanks for your no info opinion... my car could have been painted a year ago or maybe its flat black and paint repair is the last thing on my mind. Time to go give your useless advice to someone who is asking for a paint job question.