[DeTomaso] For those who like engine builds

[Tony DiGiovanna]

How did you get the webers dialed in without dyno pulls?

 

From: Kirby Schrader [mailto:kirbyschrader at mac.com] 
Sent: Wednesday, October 14, 2015 9:29 PM
To: Tony DiGiovanna
Cc: <detomaso at poca.com>
Subject: Re: [DeTomaso] For those who like engine builds

 

Tony,

 

It was not dyno’d, much to many’s disgust and disappointment.

Honestly, I spent so damned much on the engine, I was loathe to spend more knowing what I already knew from Tom.

I don’t know if you’ve ever tried to put a dry sump motor on a dyno, but it is a much bigger chore than one thinks, unless the shop is set up for that already… The one we used is/was not.

So, I passed on the dyno.

 

My motor has just slightly more stroke and just slightly less bore than Tom’s engine, which dyno'd at just over 705HP.

He spent a lot of time and money tweaking intakes and stuff with his, so I was pretty confident mine would do the same.

Or maybe better?  :-)

Bore =  4.133”  Stroke = 3.30"

They are both 354ci

 

The only differences between the two motors:

 

 - The cam is identical except for a little more lobe separation for the Webers.

 - The well aged and tweaked Mike Trusty Webers, of course. Tom uses a worked over Holley.

 - Tom uses custom ‘zoomie’ headers with Borla mufflers that look like 180’s, but they are not. I use good old GTS headers that have been whacked off and a 3” collector welded on, then 3” tailpipes with some shortie Magnaflows.

 

I was hitting the rev limiter at 8000rpm in 4th at the end of the TWS straight, so we moved it up to 8200.

Tom’s got his set to 8800rpm. Neither of us use 5th gear.

 

Prior to running into the Javelin at the last CVAR event, I managed my first 2 minute lap.

Getting there, slowly but surely.

 

Regards,

Kirby

 

On Oct 14, 2015, at 20:11, Tony DiGiovanna <tonydigi at optonline.net> wrote:

 

Do we know what it dynos at?

-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at poca.com] On Behalf Of Kirby
Schrader
Sent: Wednesday, October 14, 2015 8:05 PM
To: <detomaso at poca.com>
Subject: [DeTomaso] For those who like engine builds


http://www.spacecitypanteras.com/kirbyschrader/Pantera/racecar%20engine/inde
x.html
<http://www.spacecitypanteras.com/kirbyschrader/Pantera/racecar%20engine/ind <http://www.spacecitypanteras.com/kirbyschrader/Pantera/racecar%20engine/ind%0bex.html> 
ex.html>

FWIW,
Kirby



 

-------------- next part --------------
   How did you get the webers dialed in without dyno pulls?


   From: Kirby Schrader [mailto:kirbyschrader at mac.com]
   Sent: Wednesday, October 14, 2015 9:29 PM
   To: Tony DiGiovanna
   Cc: <detomaso at poca.com>
   Subject: Re: [DeTomaso] For those who like engine builds


   Tony,


   It was not dyno'd, much to many's disgust and disappointment.

   Honestly, I spent so damned much on the engine, I was loathe to spend
   more knowing what I already knew from Tom.

   I don't know if you've ever tried to put a dry sump motor on a dyno,
   but it is a much bigger chore than one thinks, unless the shop is set
   up for that already... The one we used is/was not.

   So, I passed on the dyno.


   My motor has just slightly more stroke and just slightly less bore than
   Tom's engine, which dyno'd at just over 705HP.

   He spent a lot of time and money tweaking intakes and stuff with his,
   so I was pretty confident mine would do the same.

   Or maybe better?  :-)

   Bore =  4.133"  Stroke = 3.30"

   They are both 354ci


   The only differences between the two motors:


    - The cam is identical except for a little more lobe separation for
   the Webers.

    - The well aged and tweaked Mike Trusty Webers, of course. Tom uses a
   worked over Holley.

    - Tom uses custom `zoomie' headers with Borla mufflers that look like
   180's, but they are not. I use good old GTS headers that have been
   whacked off and a 3" collector welded on, then 3" tailpipes with some
   shortie Magnaflows.


   I was hitting the rev limiter at 8000rpm in 4th at the end of the TWS
   straight, so we moved it up to 8200.

   Tom's got his set to 8800rpm. Neither of us use 5th gear.


   Prior to running into the Javelin at the last CVAR event, I managed my
   first 2 minute lap.

   Getting there, slowly but surely.


   Regards,

   Kirby


   On Oct 14, 2015, at 20:11, Tony DiGiovanna <[1]tonydigi at optonline.net>
   wrote:


   Do we know what it dynos at?
   -----Original Message-----
   From: DeTomaso [[2]mailto:detomaso-bounces at poca.com] On Behalf Of Kirby
   Schrader
   Sent: Wednesday, October 14, 2015 8:05 PM
   To: <[3]detomaso at poca.com>
   Subject: [DeTomaso] For those who like engine builds
   [4]http://www.spacecitypanteras.com/kirbyschrader/Pantera/racecar%20eng
   ine/inde
   x.html
   <[5]http://www.spacecitypanteras.com/kirbyschrader/Pantera/racecar%20en
   gine/ind
   ex.html>
   FWIW,
   Kirby

References

   1. mailto:tonydigi at optonline.net
   2. mailto:detomaso-bounces at poca.com
   3. mailto:detomaso at poca.com
   4. http://www.spacecitypanteras.com/kirbyschrader/Pantera/racecar%20engine/inde
   5. http://www.spacecitypanteras.com/kirbyschrader/Pantera/racecar%20engine/ind%0bex.html