is this possible?

[Aurora40]

Sam, 8388, does seem to be a knowledgeable guy. I don't think he is trying to BS you. It may be his car is just a factory freak. Or maybe he isn't the original owner, and someone else had the intake off. Or maybe he uses a rather gracious dyno. Who knows.

I think it's safe to say that the average owner won't make that kind of power with simply adding a Desert Development exhaust and timing the cams.

And I've never done it, but watching the videos on the cams, aren't they basically timed by the process of installation? Which is to say you have the assorted crank and cam pins in place, and voila it gets timed? I didn't know there was much room for error in that other than perhaps play in the pins.

What I am fairly sure of is that if there was a huge amount of power to be made timing the cams, then the folks that make their money selling performance to ZR-1 owners would get on board with that.

[40th#381]

My 93 Dynoed @ 371 HP @ BG in May 04.
The engine is stock with Marc Randolf chip Jeal headers and
Corsa exhaust w/no cats (thanks FL).

As you know those Ruby's are special :-)

Jan

[guinnessdood]

411RWHP without polishing and porting the Plenum and Injectors Housings (a top notch job at that!) and without headers and an aftermarket tune is not possible on ALL MOTOR. Someone needs to check out their dyno! Those numbers are just plain wrong. Even with all of that...it isn't likely to be more than about ~410 RWHP at best. Gotta get into the heads to bring much more than 400 RWHP. A lot of guys here have done a lot of these mods and those numbers just don't add up. No way.

[jonszr1]

I didn't want to be the first one to say bs as I remember what people said about my car after porting the inj and plenum comming out to 409.9. but I will have to agree with Ullys' take on this. NFW. bad dyno or motor work heads-inj-plenum porting by previous owner. but whatever if he loves his z thats what counts. we all are hopeleely addicted to the KOTH. on that we can all agree!!!!!!!!!!!!!!!!!!!!!!!

[8388]

I've talked to a few of the guys that were involved with the LT-5 project about my car, and it was agreed that cam timing can make a huge difference. Lets talk about this for a moment. We all know that freak cars do exist, mine is probably one of them.

Why or what makes it a freak ?

[Kevin]

cam timing, factory porting, built on a tuesday under a full moon?

[Peaven]

Originally Posted by 8388

I've talked to a few of the guys that were involved with the LT-5 project about my car, and it was agreed that cam timing can make a huge difference. Lets talk about this for a moment. We all know that freak cars do exist, mine is probably one of them.

Why or what makes it a freak ?

I'd say that having 30 or more rwhp than most any other LT5 setup exactly the same way qualifies it as a freak, check...make that superfreak. A freak in this case is a good thing.

Still, it's hard to fathom that a from the line, never been opened LT5 w/3" exhaust of any type can crank out 411hp at the rollers. Maybe someone got creative in Stillwater with your engine when she was being assembled, I dunno....assuming the dyno's right and as deep as an LT5 has to breathe to produce those #'s, that's the only explanation that makes sense to me.

[jonszr1]

it would help alot if you would post the dyno sheet. I hope you can understand how over the top this is . my car has jeal headers flowmaster ex. aluminum flywheel and coreys port job on the inj and plenum, when I posted my figures everyone cried B.S. until Corey posted the dyno sheet. SO if they gave it to me what do you think they are going to do now . That is why I pmed you with the offer to pay for a dyno session at Coreys. If this is true I will buy your car for 30k just to tear it down to see how it was done. Its that far outside the box. just my humble opinion

[8388]

Originally Posted by jonszr1

If this is true I will buy your car for 30k just to tear it down to see how it was done. Its that far outside the box. just my humble opinion

I hate to break it to ya, but, this car is not for sale especially for $30k
As for dynos, like I said before, I don't put too much in them. The true test is what it does at the track. BTW, the car is in North Dallas, and we can, at your expense pull the plenum off, right after a nice speed run

[WB9MCW]

A FREAK ZR-1---HMMMM---DYNO IT AND LET US SEE THE FREAKY #'s---

BUT LET US DYNO ANOTHER STOCK ZR-1 JUST B4 OR AFTER THE FREAK ON THE SAME DYNO!!!