GMT 800 & Older GM General Discussion 2006 & Older Trucks | General Discussion

got my hemi on the dyno, pics inside

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Old 06-13-2004 | 12:17 AM
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Default got my hemi on the dyno, pics inside

it was on a MUSTANG DYNO in sherman texas at DYNOMITE PERFORMANCE.

-------- REMEMBER this is a MUSTANG DYNO -------------

these two sheets are one dyno run. without nitrous.



this one is the actual hp/tq curve sheet without nitrous. you cant hardly read the numbers


------------------------------------------------------------------------

these two are one dyno also, except WITH nitrous. 125 shot



this is the curve sheet also. the black line is the a/f ratio. it shows rich!!



the owner of the shop said that on a DYNOJET dyno that i would see around 425hp +/- 15hp and 550tq.

tell me what you think.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!11 11

he said that on a dynojet dyno i would pull around 315hp and 350tq n/a

94deg air ind shop and 51% humidity
Old 06-13-2004 | 12:21 AM
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very good numbers to me. now do some weight reduction and that pig will run...whats done to the truck besides the gas? congrats on the nice runs. btw, have you ran it at the track and if so, what times? high 12's? mid 12's?
Old 06-13-2004 | 12:35 AM
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its a reg cab short bed, 4.56 gears, removed cat, full boar muffler 3"in/3"out dumped, and dropin k&n
Old 06-13-2004 | 12:43 AM
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very impressive. i have a buddy with a short bed reg cab 4x4. he's having a hard time getting any performance mod to improve his times. i dont' know what's up with that truck
Old 06-13-2004 | 05:31 AM
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Very nice dyno. Good enough that next time i'm in Texas i may have to swing by Telephone and let you have a go at my truck.

Why did they shut it down at only 5200rpms? It looks like it still had some more in it on the top end.

Congrats, very nice.
Old 06-13-2004 | 09:56 AM
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Nice, those are good numbers. Very comparable to what a stock 5.7L LS1 makes. If your reg cab short beds weighed ~4200 lbs like the GM's you'd really be smoking us.

Thanks for the dyno graphs.
Old 06-13-2004 | 11:02 AM
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thanks alot. the 500+ tq is REALLY noticable. the 5200rpms was 105 on the speed limiter. i have 4.56 gears and it cuts out at around 5250 at 105, i should have turned the key.

i will leave all the tricks for later when i get on a dynojet, im not really all that excited at these numbers cause i cant compare them to anyone elses.

they are all off from a dynojet. so i dont know. all i know is the dyno shop was impressed.
Old 06-13-2004 | 11:27 AM
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Grats man!

I love it when people push their trucks instead of just being satisfied it has a Hemi

What are you gonna do for traction?
Old 06-13-2004 | 11:30 AM
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Yep, a Mustang dyno with a 5100lb load is gonna read a good bit lower than a dynojet.

Those are good numbers no matter what type of dyno though.

Do you guys have anyway to remove the speed limiters yet? I'm not to up on Dodge stuff.
Old 06-13-2004 | 12:01 PM
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Those 4.56s must feel nice. I've thought about swaping my 4.10s to 4.56s, but not sure if i will run out of 3rd gear in the 1/4. My highest trap so far was almost 116, and i was pretty high in 3rd.

I cant wait to get a new dyno with the 225 shot to see where i'm at. I'm optimistic and hoping to see 500rwhp and 575rwtq.


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