holley 7010

[rgalajda]

You've confirmed my suspicions. The tight LSA will contribute to that also.

[rgalajda]

You've confirmed my suspicions. The tight LSA would contribute to that also.. The reverse idle setup makes it hard to get a stable idle with this cam. I assume if you were working with say a RV cam things would be different. Thanks for replying.

[RFSPHPbb]

wonder if a guy could install a regular #1850 primary metering block? do away with the reverse idle.

Or, drill the IFRs in the 7010 metering block?

[1109RWHP]

So is there any accurate way to read idle AFR on a big cammed motor?

[RFSPHPbb]

not that I know of. the exhaust pulsing can be mitigated but I don't know of any way to stop the pass-through of air during valve overlap. anybody got any bright ideas?

[RFSPHPbb]

does anybody know if there would be difficult issues converting the 7010 primary to a 1850 style deal?

[rgalajda]

Over the winter I decided to convert the Holley 7010 780cfm stagger bore carb from reverse idle emissions carb to standard idle system .
So plugged the air bleed in the main veturi's with a 8/32 set screw .
Drilled the main body and throttle base for idle passage.
Angle drilled throttle base .078" for idle discharge.
Replaced main metering block from a holley spread bore ( has accelerator pump passage tube )
Changed IAB from .034" to .070"
Installed a secondary metering block from a 3310-1
Was easy to tune from there.

Went on a mystery cruise on the weekend took us to the Niagara Escarpment here in Southern Ontario Canada. Not what I was expecting, with secondary roads to get there and up and down steep hills including a switch back requiring 10 mph to maneuver it in the Escarpment. So not exactly a highway tour. 42 cars stopping at a stop sign some times. Anyways I got 18.2 miles per imperial gallon . Thats 15.2 mi/gal (US) in a 4000 lb 1975 Monte Carlo 454/500hp 400 turbo trans and 2.73:1 rear axle. I'm sure I can better that on the highway.

[Right hand drive]

[rgalajda]

Imperial gallons?

[Right hand drive]