[DeTomaso] REPLACMENT CARB ?

[Will Kooiman]

Yes, of course, but the point is DP carburetors have smaller power valve enrichment circuits.  If you jet them to have proper A/F ratios at wide open, they are richer at cruise than street carburetors.

Btw, I think everyone agrees that the intake of choice for most street Panteras is the Performer RPM that you mentioned.  And I think everyone also agreed that either a 600cfm or 650cfm would be sized about right.  When I suggested 750dp, I meant more for the manliness and to have room for growth.  The specific carburetor is more a matter of personal preference.  I love Holleys.  They are the embodiment of hot rodding - to me.  I don't like Demon or Edelbrock carburetors.  But some people do.

On 1/26/22, 2:13 PM, "MICHAEL DREW" <mikeldrew at aol.com> wrote:

    Will write:

    “There is a difference between street carburetors and double pumpers, but that's because the DP carburetors are richer during cruise.  Their power valve circuits provide less gas, because they are intentionally jetted richer.“

    It should go without saying (but I’m saying it anyway) that ANY carb needs to be jetted correctly no matter what. People often say that a DP uses more gas, but that is ONLY true if it is not properly jetted. It may well be true that most come out of the box jetted too rich for most applications. But it’s the owner’s fault if he just accepts that state of affairs. It’s a matter of a moment to change to smaller, appropriately sized jets. 

    Mike

    Sent from my iPhone

    > On Jan 26, 2022, at 05:07, Will Kooiman <will.kooiman at gmail.com> wrote:
    > 
    > There is a difference between street carburetors and double pumpers, but that's because the DP carburetors are richer during cruise.  Their power valve circuits provide less gas, because they are intentionally jetted richer.