418 Stroker GTO dyno'ed
418 Stroker GTO dyno'ed First time the car has ever been on a dyno. Its an auto with a 4k stall. Was curious to see what the powerband was looking like. Although we couldn't get the rpm function to work on the dyno for some reason I am happy with the results. I included the scan. Powerband looks exactly how the car feels. These are unlocked numbers. Pulls great from tip-in all the way to redline. Built and tuned by me. With the exception of the short block. Shout out goes to TSP on that one!
Last edited by redgto4u; Dec 9, 2012 at 02:31 PM.
Too be honest the Numbers look alittle low to me. Do you have dyno graph with rpm instead of mph and with sae correction?
Im sure its a beast either way. Its alot of power so Enjoy it
Im sure its a beast either way. Its alot of power so Enjoy it
So was mine look in sig. Numbers arent bad at all I just think they could be alittle better. You have to figure they would be around 10 less with sae correction too. But all dynos are not the same and ITs alot of power enough to kill tires all day and night so it will be fun as hell to drive.
Last edited by offaxis; Dec 11, 2012 at 10:42 PM.
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Great discussion. Specific mods are:
TSP 418 11.5cr, hardcore intake, ported fast 92/tb,(TSP Texas Giant Camshaft 248/254, .615"/.622" 112lsa, AI 243 heads,pacesh!ter lt's, factory catback, UDP, drag springs, FTI4000 and performabuilt2.
I imagine a combination of the heads,lt's and hardcore intake/fast92 combo are holding it back a bit. Honestly it made exactly what I thought it would through this drive train...not an over achiever. I could spend even morrrrre money on better heads,stepped headers/exhaust, fast102/svede intake.
BUT I could also use that amount of money for a nice 200 shot setup aswell!
If you look at mike27408's numbers with slightly better intake/header setup than mine and through an m6 I dont think I'm far off at all.
offaxis, what converter did you have in the GTO? Mine is a 4000, but with this new motor its been flashing to more like 4300. Is there a way I can tell if I'm blowing through it or its maybe inefficient at this power level? Its hits HARD...lotta fun.
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TSP 418 11.5cr, hardcore intake, ported fast 92/tb,(TSP Texas Giant Camshaft 248/254, .615"/.622" 112lsa, AI 243 heads,pacesh!ter lt's, factory catback, UDP, drag springs, FTI4000 and performabuilt2.
I imagine a combination of the heads,lt's and hardcore intake/fast92 combo are holding it back a bit. Honestly it made exactly what I thought it would through this drive train...not an over achiever. I could spend even morrrrre money on better heads,stepped headers/exhaust, fast102/svede intake.
BUT I could also use that amount of money for a nice 200 shot setup aswell!
If you look at mike27408's numbers with slightly better intake/header setup than mine and through an m6 I dont think I'm far off at all.
offaxis, what converter did you have in the GTO? Mine is a 4000, but with this new motor its been flashing to more like 4300. Is there a way I can tell if I'm blowing through it or its maybe inefficient at this power level? Its hits HARD...lotta fun.
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Last edited by redgto4u; Dec 13, 2012 at 09:15 PM.
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What kind of timing would you guys expect me to be running. Its got 23 in it now. I always heard the 243 heads don't favor much more anyways. The cam has alottt of overlap to it though so dynamic cr might allow more timing..thoughts?
