Blown LSx hits the dyno

[streetk14]

Well, I finally got around to getting the tune on my '67 dialed in. I had the guys at A&A Corvette do the dyno tuning, and am fairly happy with the results. I am very happy with the driveability, and the car picked up around 60 rwhp.

The end result was 505 rwhp and 470 rwtq. 500 rwhp was my original goal when I started the blower project on this car, so I did meet my goal. I thought it would be closer to 550 rwhp, but high intake air temps held me back. A methanol injection system may be in my future, which should be good for another 50 rwhp.

But for now, the car is running great and will burn off the 315's in 2nd gear at speed. The torque curve is basically a flat line, so this thing is a lot of fun to drive. Now I just need to swap in my 9" rearend and take a trip to the dragstrip to see what it can do.

Andy

[Smock67]

Damn thats just plain sweet. how much boost are you running?

[4MuscleMachines]

Nice job! I also have a Maggie LS2+A4 trans ready to drop into a 70 GTO. My goal is also 550+rwhp. I am going with methanol and a baby blower cam. Congrats on the numbers.

[Rantheman]

very good info I would like to here any sound clips you have with the new setup I am debating weather i am going to run something like this or not

[Rybar]

Awesome news Andy! Yes video is a requirement now!

[John McIntire]

Good job! Nice numbers! That must be some fun!

[streetk14]

Thanks guys!

I'm right at about 10 psi right now, and yes, I do have a dyno video. I'm not sure how to get it up here for everyone to see, but I do have it on my computer.

I really need to do the meth setup, because the intake temps were high. My tuner said I could get another 4 degrees of timing with the cooler inlet temps, which is worth a good amount of power. It does feel pretty damn fast right now, so I'll probably do the meth after the new power fun factor wears off.

Andy

[Rybar]

Andy, upload the videos to Youtube.

[Moose]

Great #'s.. What mods beside the blower does the motor have..

Also, nice detail work on the engine.. looks great as well.

[streetk14]

Great #'s.. What mods beside the blower does the motor have..

Also, nice detail work on the engine.. looks great as well.

It has Patriot LQ9 heads, a Comp XER cam (224/230) & Stainless Works 1 3/4" long tubes. That's it besides Comp pushrods, ARP head studs and a double roller timing chain. Everything else is stock LS1 stuff.

I'm curious as to how well the engine would have performed with less boost. I had a larger pulley that is good for a couple pounds less, but we didn't mess around with it. I wonder if we could have made the same power with less boost and more timing. Oh, well...

Andy

[streetk14]

Andy, upload the videos to Youtube.

Here it is: http://www.youtube.com/watch?v=R9sciUCPoS4

[Rybar]

That sounded #%$*& Awesome Andy! Love it

[streetk14]

That sounded #%$*& Awesome Andy! Love it

Yeah, and I like how that rubber mat behind the car blows apart at the end of the run.

Andy

[Smock67]

Wow the anticipation in that video killed me but holy hell it was well worth it.

[Rantheman]

that sound great i want what you got

[gordonquixote]

SICK! I love it.

[Gordz32]

Awsome, love the blower whine and the numbers are great!

[curly]

Congrats on your numbers! Nothing like blower whine, is there?

[Moose]

It has Patriot LQ9 heads, a Comp XER cam (224/230) & Stainless Works 1 3/4" long tubes. That's it besides Comp pushrods, ARP head studs and a double roller timing chain. Everything else is stock LS1 stuff.

andy

the short block is still stock? Thanks for the info..

I've been trying to decide on what I want to do with my car. This is very great option. I want a clean look and plenty of power. But good drivablity. I had a 4th gen that put down 450 rwhp with a good h/c package, but drivablity was not great. I like the blower route..

[Patrick]

Looks and sounds great!!! Puts a little fire under me to get mine finished.