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convert 3310 vac secondary to mechanical? #376818 07/15/09 11:27 PM 07/15/09 11:27 PM
Joined: Jun 2005 Posts: 163 Iowa,US 4bbl OP member
4bbl OP member Joined: Jun 2005 Posts: 163 Iowa,US	what's the pros and cons to doing the screw in the linkage trick tp convert your vacuum secondarys to mechanical ones on a race only application? 4bbl If you can't hear it coming what's the point.......

Re: convert 3310 vac secondary to mechanical? [Re: 4bbl] #376819 07/15/09 11:42 PM 07/15/09 11:42 PM
Joined: Jan 2003 Posts: 1,996 s. e. pa. C calrobb2000 top fuel
calrobb2000 top fuel C Joined: Jan 2003 Posts: 1,996 s. e. pa.	hi good idea if you want to go slower ! if you want a mech secondary use a 750 double pump carb . list 4779

Re: convert 3310 vac secondary to mechanical? [Re: calrobb2000] #376820 07/15/09 11:48 PM 07/15/09 11:48 PM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	Theres a reason a Mechanical Secondary carb is often refered to as a "Double Pumper"... You need a second accelerator pump to compensate for the big hole in the fuel curve created by opening the secondaries without air velocity...

Re: convert 3310 vac secondary to mechanical? [Re: 4bbl] #376821 07/16/09 12:14 AM 07/16/09 12:14 AM
Joined: Feb 2005 Posts: 4,884 Michigan MNobody master
MNobody master Joined: Feb 2005 Posts: 4,884 Michigan	Holley doesn't recommend it and like said there is no advantage to it.

Re: convert 3310 vac secondary to mechanical? [Re: MNobody] #376822 07/16/09 01:24 AM 07/16/09 01:24 AM
Joined: Jan 2003 Posts: 9,826 las vegas 70AARcuda master
70AARcuda master Joined: Jan 2003 Posts: 9,826 las vegas	the engine will have one big bog...no acelerator pump to cover the lean condition as the secondaries are throw open... Tony 70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)

Re: convert 3310 vac secondary to mechanical? [Re: 70AARcuda] #376823 07/16/09 03:43 PM 07/16/09 03:43 PM
Joined: Dec 2003 Posts: 531 USA 5 540DUSTER mopar
540DUSTER mopar 5 Joined: Dec 2003 Posts: 531 USA	put a bb in the kill bleed and a big shooter with a 50cc pump. check out old mopar performance book for instructions.

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