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Some new Hefffner TT dyno numbers

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Some new Hefffner TT dyno numbers
Old August 13th, 2004, 09:44 AM   #1
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Some new Hefffner TT dyno numbers

We recently made a few changes to our standard twin turbo system and were able to get it on the dyno yesterday. Needless to say we are fairly pleased with the power that the car makes. This was done with a 488 cubic inch engine with Ross pistons, ported stock heads, an AEM engine management system and our twin turbo system. This run was done with race gas. This conversion was done in just about eight weeks. There will be more to come in the future with this car but this is all I can say for now. Until the you'll just have to drool over these.
[image]http://www.viperalley.com/gallery/data/500/1948tt-med.jpg[/image]
[image]http://www.viperalley.com/gallery/data/500/1948tt2.jpg[/image]
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 09:46 AM   #2
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Re: Some new Hefffner TT dyno numbers

It's a tiny picture that won't get any bigger.
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 09:49 AM   #3
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Re: Some new Hefffner TT dyno numbers

Please enlarge.
It looks like you made over either 900 or 90 HP!
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 09:50 AM   #4
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Re: Some new Hefffner TT dyno numbers

Don't mean to be rud....but that pic is just WAY too small. Can we get a larger one please.
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 09:52 AM   #5
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Re: Some new Hefffner TT dyno numbers

Oh, that helps! Nice!!!!
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 09:53 AM   #6
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Re: Some new Hefffner TT dyno numbers

Pardon my ignorance. I'm better at building cars than I am at posting pictures, I swear.
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 09:55 AM   #7
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Re: Some new Hefffner TT dyno numbers

over 1000 hp and tq... is that a lot?

HOLY CRAP!!!
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 09:59 AM   #8
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Re: Some new Hefffner TT dyno numbers

Quote:
Originally Posted by Heffner Performance
Pardon my ignorance. I'm better at building cars than I am at posting pictures, I swear.
I believe you! Good job, dude! That's some mighty fine power! :thumb:
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 10:02 AM   #9
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Re: Some new Hefffner TT dyno numbers

Quote:
Originally Posted by JID
over 1000 hp and tq... is that a lot?
I don't know but it feels noteably faster than a stock GTS.
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 10:03 AM   #10
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Re: Some new Hefffner TT dyno numbers

Do you have a vipeair on it?

Great work !!!!
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 10:20 AM   #11
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Re: Some new Hefffner TT dyno numbers

Quote:
Originally Posted by Mike Adams
Do you have a vipeair on it?

Great work !!!!
LOL - but hey I still think blowers are better than turbos! Not.

Congrats Jason, looks like you and Dr. Roof can have some good races at the VOI.
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 11:00 AM   #12
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Re: Some new Hefffner TT dyno numbers

Jason congrats on the awesome power.... I hope you are supplying your customer with a case of depends....so he does not leave any marks on the seat just on the pavement.

Cudaman
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 11:11 AM   #13
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Re: Some new Hefffner TT dyno numbers

Congrats Jason - great to see that car on the dyno that is one helluva power curve

ok blower guys who keep telling us SC are quicker than turbos - come and do a 4th gear roll on against this one from any speed in 4th or 5th to the redline.... if you don't concede defeat now - you just do not know when to quit -

but the next upgrade should probably convince you... [img]/images/graemlins/laughing.gif[/img]

not talking 1/4 mile here - that comes down to setup, traction and driving - talking about a roll on from 100mph up - overlay blower power curves and weep.

I enjoyed saying that it's all in good fun

Jason - in the 1st 3-4 gears - that car is going to be loose as a goose
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 11:17 AM   #14
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Re: Some new Hefffner TT dyno numbers

That is some crazy ass power curves for both torque and HP. What kind of boost is that thing running?
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 11:19 AM   #15
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Re: Some new Hefffner TT dyno numbers

500 ft-lbs of torque at 3000 RPM. Holy Mary Mother of God. 4th gear roll on would be like riding in the space shuttle.

That's incredible [img]/images/graemlins/shocked[/img]
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 11:26 AM   #16
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Re: Some new Hefffner TT dyno numbers

Congrats with the numbers but could you and Roof have to much power for the 1/4 mile. Once you get past the 900RWHP-950RWHP is the rest just for show or is it needed for a 1/4 mile race. I know that the big boys have RWHP into the multi thousands of RWHP but the Viper set up is a different story. Do you have a better chance with an auto trans vs a 6 speed with all the HP?

John with his red SRT in San Antonio was having a hard time with all the HP and traction. What is the secrete to putting 1000+ RWHP to use on the track without wild wheel spin throughout all the gears?

The Unlimited class gets better everyday.

Rohn
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 11:27 AM   #17
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Re: Some new Hefffner TT dyno numbers

AWESOME NUMBERS!!

Jason,

I'll trade pic-posting skills for a ride in any of the TT Beasts anyday!
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 11:28 AM   #18
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Re: Some new Hefffner TT dyno numbers

awesome #'s.. I can't imagine.
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 11:34 AM   #19
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Re: Some new Hefffner TT dyno numbers

Quote:
Originally Posted by slapphappy
500 ft-lbs of torque at 3000 RPM. Holy Mary Mother of God. 4th gear roll on would be like riding in the space shuttle.

That's incredible [img]/images/graemlins/shocked[/img]
Yip - passing 800ft/lb by 3500rpm and 1000lb ft 200rpm later - can you say "wheelspin at 100mph" on the fattest road radial tires?

Rohn - if anyone has the answers to those questions - you can be sure they'll want to demonstrate them to you personally before they'll wish to explain it via an instruction manual and a picture book [img]/images/graemlins/laughing.gif[/img]
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Re: Some new Hefffner TT dyno numbers
Old August 13th, 2004, 11:38 AM   #20
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Re: Some new Hefffner TT dyno numbers

Damn - that is impressive!!

Will this car be at the VOI???
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