Anyone here have a long tube runner setup that is properly tuned and have either dyno or track results to show for it? Looks like i will be going the vortec head and intake route with a LT4 hotcam and wondering who has gotten exactly what results from the LT4 hotcam in a LTR setup
thanks
PS anyone have a tpi vortec setup runnign yet with track or dyno # outside of SD says?

My best with the automatic trans was 13.189sec @ 102.xx mph.
Best with the M6 trans is 13.58sec @ 105mph, still working on my shifting and launch.

Engine specs are in the link in my sig, basically just a punched-out L98 with the HOT cam and more compression.

There are others running LTR TPI and the HOT cam, Mike Davis and Greg Westphal come to mind as I've been to the track with them. Mike's running 11.9sec @ 111mph, Greg is at 13.2sec @ 105mph.

The recipe is breathing upgrades. Better heads, aftermarket intake base, bigger runners, and headers. Gotta be able to move lots of air to make use of the HOT cam's extra lift and duration.

There's an article in Super Chevy where they test a TPI stock, with Vortecs and manifold then with the Vortec's, Hot Cam and Manifold. Very Impressive!
www.geocities.com/dzperf

Anyone?
NO one out there has hard numbers from a dyno run with a long tube runner setup? Going the vortec head/intake and hotcam route on my formula........Someone has that setup running but where? :-)
later
jeremy
PS no regurgitated scoggins dickey /super chevy article either a real account would be nice not from the people who made it

Not the most impressive, but you asked...


check my site for more info on the combo and mods...

FWIW, I plotted the SD vortec dyno data
(from Chevy High Perf. Mag. article)
directly against my Edelbrock base + Alum
L98 rear wheel dyno data, and (using 22%
automatic drivetrain loss) they were dead
on across the board..

So from what I can tell, the iron vortecs
are the same as the alum vette head when
sitting under a TPI, and for about the same
price...

YMMV

mike

(my dyno data is at
http://www.eecis.udel.edu/~davis/z28/winter01/dyno/

)

mike

Holy ****!! I can't believe how much your times improved after the Viglante TQ convertor!! Awesome!
bsa

Mike Davis' dyno data are on the link below. Great stuff here...including comparison of the same engine with LTR and Miniram setups.

http://www.eecis.udel.edu/~davis/z28/winter01/dyno/

My numbers aren't spectacular either, but here is my dyno:

Those numbers dont seem bad at all foe being rw numbers :-)
and yoru runnign a ported stock intake and im sure theres always more tuning to be pulled out for it in the prom ;-)
im doing the vortec swap in the next few mths so its nice to see people runnign similiar setups with tracktimes and/or real dyno numbers
thanks
jeremy

No, my numbers aren't bad, but they're not great either. I'm happy with the torque, but the stock intake is killing the HP. Hopefully I'll have some money soon and I'll be able to get rid of it.

As far as the tuning goes, I have the prom maxed out (to the best of my abilities anyway). For comparison, here is the first dyno I did with this engine, but running the stock prom:



That was just plain ugly.

Here's mine... in the sig.

I just recently put a 383 LTR vortec head (SCPC vortec TPI intake) engine in my car. I didn't use the hot cam though, I used the LPE 74211 cam (I liked its duration and lift #s a little better than the hot cam for a vortec head LTR setup). I don't have any dyno numbers yet, but my best run at the track is 12.59 @ 107. This may not help with your question about the hot cam. But I can tell you that the vortec heads and LTR setup work pretty well, at least for me. The hotcam is a little more aggressive (and a lot cheaper) than the LPE 74211 cam, so maybe it would work better, hard to say.

See Ya....Mike.....