Quote:
Originally Posted by pontiac jack
Troy- You're right, the 540510 has a provision for the pump-interface. But it also has the 1/2" NPT tapped hole for heater-hose/guage-sender.
As for the 535552 being "SD", I'm skeptical. But you need to understand that the whole subject of "Super Duty" nomenclature prior to 1962 is a pet peeve of mine.
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Yep...aluminum 510 had heater nipple tapped....but the "so called" SD iron one did not..IIR..only difference I could find.
SD not around in 60 is a pet peeve of mine Jack ..
I firmly believe 60 was birth year for SD....maybe not for production runs..but for NASCAR & drag racing..I seem to remember that NHRA made the 510 intake legal for 60...but not legal for 61 model year..??
Next time I see Arnie I hope to ask him his opinion.......
__________________
ECM member.
2008 Outlaw Pontiac Drag Series Champion
MANDRA
Do it now fool! Life is short.
69 Grand Prix/3163lbs / IAII 535 w/ Tiger heads by Gaydosh....9.35@ 144 so far..
through mufflers. 1.26 60'.
Going back to track with pump gas engine....
My 60 Ventura retired to street/strip duty..