vortech v9 on stock ls1 dyno results...
Teching In
Joined: Jan 2009
Posts: 9
Likes: 0
From: Windsor, CO
I have some pulleys i might let go, i have the v9 gtrim kit on my stock 2000 firebird last dyno i did i was at 550hp and the valve covers has never been off the car, stock bottom end, stock cam/ heads
damn, that sounds like nice #'s. How many lbs of boost, how many miles on engine, what size pulleys? Pm me with details, thankx...
Holy ****... I found out why the #'s were so low. The blower belt was worn and slipping bad. I havent gotten it back to the dyno to see new #'s but its a world of diff from sotp feeling. I wonder if it needs retuned due to the belt slipping while on the dyno getting tuned???
too late right? Well take it easy.
well, damn it, that just means more money. I have logged it and havent seen any kr. I was wondering if I could get ahold of a wideband would this be enough along with watching for k/r to be safe or deffinitely get a retune? Vortech says the stock pulley combo should make 9lbs on stock engine but with the mods I have Should I be seeing more than 6lbs? Im getting a boost guage to see if the #'s are still 6 or higher BTW.
I have the v-9 intercooled kit with a 2.62" pulley making 9 lbs of boost at 5000 ft above sea level. It put down 515 rwhp SAE on a stock LS1 with only a corsa cat-back and ptb. I was loosing boost at one point and replaced my Bosch by pass valve with a better one and boost was restored.
I have the v-9 intercooled kit with a 2.62" pulley making 9 lbs of boost at 5000 ft above sea level. It put down 515 rwhp SAE on a stock LS1 with only a corsa cat-back and ptb. I was loosing boost at one point and replaced my Bosch by pass valve with a better one and boost was restored.
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The stock 3.12" pulley is supposed to make 8-9 lbs at sea level. My 2.62" pulley actually makes 10 lbs at 5000ft but I have a boost limiter to bleed off the excess, and I get boost much sooner in the lower rpm's.
I got ya. I talked to vortech and they said I should have about 8lbs with stock 3.19 pulley and that I must have a leak because Of the 6-7lbs Im getting. I also thought about belt slip but havent seen any residue on the pulley so???? Would that 2.75 pulley be what I need? I dont know what size pulley to get. Vortech said they dont have one to fit my blower. All or theirs has a different offset and I could machine some off the back. Can anyone confirm this? I just dont wanna buy a $100 pulley that dosent work.
stock 99 ls1 cam n springs. I cant justify changing cams on this high mile stocker and having something break and take out a cam thats worth what the entire engine is. I will probably change it to the ls6 or gt2-3 cam when another engine goes in. Hopefully that wont be anytime soon...
stock 99 ls1 cam n springs. I cant justify changing cams on this high mile stocker and having something break and take out a cam thats worth what the entire engine is. I will probably change it to the ls6 or gt2-3 cam when another engine goes in. Hopefully that wont be anytime soon...
