577 Cubic Inch TT Motor

**John Hennessey** · August 31st, 2006, 08:15 PM

1 7/8 T321 stainless headers flowing into twin 76 mm turbos. Motor in vehicle is currently stock and will be replaced by 577 CID stroker motor.

**John Hennessey** · August 31st, 2006, 08:17 PM

3.5 in. side exhaust. Outside of the big bore motor, none of this stuff is new to the Viper go fast world.....

Tanked · August 31st, 2006, 08:19 PM

577cid....Twin Turbo....think you can get 1,700rwhp? You could call it the Venom 2000. Kinda has a nice ring to it.

Honestly, what do you think it could do on pump gas.

I'd hate to ask what it would cost.......

**John Hennessey** · August 31st, 2006, 08:20 PM

The new twist is that it will be powering a 3,000 lb. Competition Coupe. Which is probably a good thing to be so light as we are only planning to push 1300 rw hp most of the time.

**John Hennessey** · August 31st, 2006, 08:29 PM

Quote:

Originally Posted by Tanked

577cid....Twin Turbo....think you can get 1,700rwhp? You could call it the Venom 2000. Kinda has a nice ring to it.

Honestly, what do you think it could do on pump gas.

I'd hate to ask what it would cost.......

We will be happy with 1300 rw hp that can be run wide open for a few minutes at a time reliably.

Sadistic · August 31st, 2006, 08:33 PM

Will such a long stroke limit the revs of the motor and thus the effectiveness of the turbos as opposed to a shorter stroke version?

The Great One · August 31st, 2006, 08:41 PM

Quote:

Originally Posted by John Hennessey

The new twist is that it will be powering a 3,000 lb. Competition Coupe. Which is probably a good thing to be so light as we are only planning to push 1300 rw hp most of the time.

1300 RWHP in a CC must be hell on wheels.

FE065 · August 31st, 2006, 08:50 PM

Awesome

Go Fast For Life · August 31st, 2006, 09:52 PM

Bravo John! How big is the bore on that beast?

GARY J · August 31st, 2006, 10:28 PM

So that clearly makes me the underdog. I love a challenge.

Nice pics John. Looking forward to December.

**John Hennessey** · August 31st, 2006, 10:49 PM

Quote:

Originally Posted by Sadistic

Will such a long stroke limit the revs of the motor and thus the effectiveness of the turbos as opposed to a shorter stroke version?

The stroke is only increased by 0.100 in. and we have done a lot of motors with this stroke and its never been a problem.

**John Hennessey** · August 31st, 2006, 10:49 PM

Quote:

Originally Posted by Go Fast For Life

Bravo John! How big is the bore on that beast?

4.250 in.

**John Hennessey** · August 31st, 2006, 10:52 PM

Quote:

Originally Posted by GARY J

So that clearly makes me the underdog. I love a challenge.

Nice pics John. Looking forward to December.

Somehow I figure you will do just fine. We could always borrow some of SVS's lead weights to even the scales if we had to.

Thanks for the props guys, Gary J.

Gary, looking forward to your event in Dec. - it looks first class like all things you do.

Torquemonster · August 31st, 2006, 11:15 PM

Looking good! Pistons included ;-)

1300rwhp reliable for extended WOT should be a piece of piss - it's all in the engine build, plumbing and oiling. You will want a dry sump in that if you are serious about reliability at WOT. Mike LeFever has one about ready now for the SRT10.