[DeTomaso] REPLACMENT CARB ?

[Larry Weston]

Don’t forget that Ian, who started this thread, wants to maintain a stock appearance on his stock engine, but ditch the 4300.
A Spreadbore to squarebore spacer will raise the carb and cause interference at the air cleaner and engine screen.
A 1974 air filter housing base won’t fit over a center hung Holley. It interferes at the float adjustment screws. So, the answer might be a 4160 side hung Holley on a painted Edelbrock Performer, no?
Still, a little tickle related to throttle cable linkage will remain.
Or luck might turn up a Ford air cleaner base that does fit a center hung Holley, a bit rare nowadays though.


Sent from my iPhone

On Jan 25, 2022, at 7:28 PM, Mike Drew <mikeldrew at aol.com<mailto:mikeldrew at aol.com>> wrote:

Will wrote:

(Snip)

Some PNs:

Manual Choke 650DP    0-4777C

>>>This is the factory carb that De Tomaso used on the European GTS, and later GT5 etc. on stock or mildly modified 351C engines.

Here is the same carb with electric choke:

https://www.summitracing.com/parts/hly-0-4777ce

Assuming you are replacing your stock intake at the same time, the Edelbrock Performer is the one 99% of Pantera owners are using and it works great:

https://www.summitracing.com/parts/edl-2665

They are expensive new, but frequently available used on eBay at a deep discount.

This exact combo is what my wife has in her Pantera, which has a stock 1971 high compression engine fitted with a mild cam and no other substantive modifications. It makes 377 HP and 390 ft lbs (thank you Dan Jones!). Your weaker L-model base engine won’t allow numbers like that but you should see improved driveability and increased power with the 650 carb.

A 750 is way too much for a stock motor. It will likely be wasteful of gas, and feel fat and boggy at normal road use RPM. A 600 would likely feel really snappy but run out of breath higher up. 650 seems to be the best compromise for your engine spec.

Mike

Sent from my iPad

On Jan 25, 2022, at 12:59, Will Kooiman <will.kooiman at gmail.com<mailto:will.kooiman at gmail.com>> wrote:

Some PNs:

Manual Choke 650DP    0-4777C
-------------- next part --------------
   Don't forget that Ian, who started this thread, wants to maintain a
   stock appearance on his stock engine, but ditch the 4300.

   A Spreadbore to squarebore spacer will raise the carb and cause
   interference at the air cleaner and engine screen.

   A 1974 air filter housing base won't fit over a center hung Holley. It
   interferes at the float adjustment screws. So, the answer might be a
   4160 side hung Holley on a painted Edelbrock Performer, no?

   Still, a little tickle related to throttle cable linkage will remain.

   Or luck might turn up a Ford air cleaner base that does fit a center
   hung Holley, a bit rare nowadays though.
   Sent from my iPhone
   On Jan 25, 2022, at 7:28 PM, Mike Drew <[1]mikeldrew at aol.com> wrote:

   Will wrote:
   (Snip)
   Some PNs:
   Manual Choke 650DP    0-4777C
   >>>This is the factory carb that De Tomaso used on the European GTS,
   and later GT5 etc. on stock or mildly modified 351C engines.
   Here is the same carb with electric choke:
   [2]https://www.summitracing.com/parts/hly-0-4777ce
   Assuming you are replacing your stock intake at the same time, the
   Edelbrock Performer is the one 99% of Pantera owners are using and it
   works great:
   [3]https://www.summitracing.com/parts/edl-2665
   They are expensive new, but frequently available used on eBay at a deep
   discount.
   This exact combo is what my wife has in her Pantera, which has a stock
   1971 high compression engine fitted with a mild cam and no other
   substantive modifications. It makes 377 HP and 390 ft lbs (thank you
   Dan Jones!). Your weaker L-model base engine won't allow numbers like
   that but you should see improved driveability and increased power with
   the 650 carb.
   A 750 is way too much for a stock motor. It will likely be wasteful of
   gas, and feel fat and boggy at normal road use RPM. A 600 would likely
   feel really snappy but run out of breath higher up. 650 seems to be the
   best compromise for your engine spec.
   Mike
   Sent from my iPad

     On Jan 25, 2022, at 12:59, Will Kooiman <[4]will.kooiman at gmail.com>
     wrote:

   Some PNs:
   Manual Choke 650DP    0-4777C

References

   1. mailto:mikeldrew at aol.com
   2. https://www.summitracing.com/parts/hly-0-4777ce
   3. https://www.summitracing.com/parts/edl-2665
   4. mailto:will.kooiman at gmail.com