Street TT Pontiac Engine Dyno vid
 

All components sourced from Butler performance; machined, assembled, and dyno'ed at Wheeler Racing Engines/Wheeler Dyno Service. Cool video, the guys at MCR are doing a GTO street car for a customer. Be sure to check out the rest of their site...they do some ultra-fine work!!

TQ

http://www.musclecarrestorations.com...TurboDyno.html

Awesome Dyno vid--Pontiac power.

Awesome dyno numbers, Give us some details please!:jumping:

Damn! 1,075ft lbs of torque at 3800 rpm! thats as high as they could read it, well over 1200hp on a safe race gas tune and 925hp on PG!

Travis, are they using your EFI system?

Great to see another turbo Pontiac! Nice video.

killer video. how about some details on the engine.

I'll put that quote in the archive: You can be rich forever, you'll only be lean once.

Awesome video. Awesome engine, even if I'm not a big fan of turbo engines.

Sweet!!

I was really impressed by this engine. It's a 505 (4.375x4.25), with standard port Edelbrock heads, Victor EFI intake, forged rotating assembly, hydraulic roller cam, IA2 block....it's just a really solid street engine. I couldn't believe how low it would idle....I got it to idle quite smoothly at 700 rpm (ah, the joys of EFI!). The EFI system is a FAST XFI unit, and as always, was super easy to tune.

I really wanted to max out the dyno from 3800 to 6000 rpm, but we didn't quite have enough fuel pump capacity to be attempting that! I know for sure that we could easily make 1400 hp with this engine on half and half race gas/pump gas.

The whole package was a neat deal. The hydraulic roller cam really made the engine super docile, and very, very quiet. This is just a basic street engine package in a strong block.

TQ

A twin turbo 505, EFI, IA2 block with over 1000HP/Torque a basic street engine package? Damn, we don't have the same definition of a 'basic' street engine :p

Neat

Bug - I guess I was referring to the long block itself.....other than the block, it's pretty much what a lot of guys have in a stout street engine.

But yeah, you're right.....I can remember when a 1000 hp engine was something to brag about in a race car. Now, I see 1000 hp in street cars all the time. Not that there's a real use for it (other than bragging rights), but.......

Wow, what great numbers, great looking engine too !

Who is the guy with the Huntsville, Alabama accent working the EFI computer? (:>)

Tom V.

Looked to be a very productive day on the dyno with a real nice pump gas tune. What kind of airflow did you have through the intercoolers?


I'm always interested in the cams people put in their turbo engines.
Could you post the cam specs and installed CL please.

Good video! If I ever hit the lotto Im buying a dyno. lol.

X2 on the cam specs??

Chicken & Bird:

Cam is a Comp custom grind, 258 intake, 248 exhaust on a 115 LCA, installed on a 112. Hydraulic roller, .580 lift.

I could not believe how calm this engine was. I'm sure the 7.9:1 compression ratio had a lot to do with it.

Also: Airflow through the intercooler was effectively zero, other than ambient air motion in the dyno cell. Pump gas air temps were in the 80-90 degree range.
Tom -
That's one ugly hick, whoever he is.

Awesome work! What's your opinion on a single pattern cam in a 460cid+ cube turbo appl. vs. like the one you posted. Do you know why it was installed @ 112?

Quote:

"Also: Airflow through the intercooler was effectively zero, other than ambient air motion in the dyno cell. Pump gas air temps were in the 80-90 degree range.

I thought the same thing Travis. Figured it would be much better on the road with real airflow going through it.


Tom -
That's one ugly hick, whoever he is.

You know how those women are, Good looking woman and an ugly guy. Makes the wife look a lot sharper.

Tom V.

Awsome combo... Please tell me it's not just going in a car show cruiser. Combos like these could do very well in heads-up classes.
Bryan

Making the power nowadays sure isn't the problem anymore. What a motor. 700 rpm idle and 900 pumpgas ponies. Saw the car it is going to be in and it sure can't use any of the power with those wheels and tires. Talk about total overkill. It is fun to going onramp flooring it and smoking the tires @ 70 mph, but it starts getting kinda dangerous and nerve wrecking as well, especially in a car so nicely built as that 67.
As for myself I always dreamt of making that much power and still drive on the street. Now that I have it (IA2, F1R 15 lbs.)in my car I find myself not driving it much anymore. Guess the journey was more fun than the destination...

I hear you. Scary when your on the rev limiter before your foot hits the floor at 50mph, even with 390-45-15 drag radials. I brought the boost down to 11lbs and it still is stupid on the street.

Agree 100% there is only so much you can put down on the street! I made 3 good runs with my car at 15psi this summer, it was enough to put the fear of god in me! lol. The car would blow off the m/t drag radials from a 50 roll. Way to much for me, I put a weaker wastegate spring in. :o To be honest I had as much fun building the car as I do driving it. :)

Whoever drives this thing will need a LOT of tire :eek:
What car is this insane twin turbo engine going in ?

Check the website from the video, and click the 67 GTO. I did because I wondered how the hell they would fit the header setup in a stock frame car. But it's not a stock frame, but it's an incredible buildup!!