Search found 278 matches

by jmarkaudio
Thu Jun 25, 2015 1:02 pm
Forum: Engine
Topic: too much carburation
Replies: 4
Views: 1632

Re: too much carburation

Put a large deadhead regulator on it, something like the Magnafuel large 4 port. Limit the pressure to 7 psi, 13 is way too much.
by jmarkaudio
Fri Jul 25, 2014 1:22 pm
Forum: Engine
Topic: Old school GM Hei help...
Replies: 4
Views: 1984

Re: Old school GM Hei help...

Sounds like a Pro Comp, trash it and get an MSD distributor...
by jmarkaudio
Tue Jul 08, 2014 1:54 pm
Forum: Engine
Topic: Pressure Switch / Secondary Fuel Pump
Replies: 8
Views: 3099

Re: Pressure Switch / Secondary Fuel Pump

You would set it up with a SPDT or DPDT relay. When boost is below the pressure you set it at it will ground the relay and switch to the unused normally open side turning the pump off. When boost is above it will lose the ground and allow current through the normally connected section, turning the p...
by jmarkaudio
Sat Jan 04, 2014 8:53 am
Forum: Engine
Topic: racing heads
Replies: 19
Views: 4835

Re: racing heads

As cast the Dart Pro 1 310 would be about as good as any. And quality castings.
by jmarkaudio
Thu Jan 02, 2014 7:20 pm
Forum: Engine
Topic: racing heads
Replies: 19
Views: 4835

Re: racing heads

Lots out there, what are you looking to do?
by jmarkaudio
Tue Dec 10, 2013 8:30 am
Forum: Racing Converters
Topic: 1/4 mile converter slip??
Replies: 12
Views: 4391

Re: 1/4 mile converter slip??

Thanks, Merry Christmas to you as well. Have a safe holiday! Sorry I'll miss you at at PRI this week, maybe I'll get up there next year.
by jmarkaudio
Sun Dec 08, 2013 4:15 pm
Forum: Engine
Topic: Points distributor help
Replies: 2
Views: 1369

Re: Points distributor help

Likely the wrong coil and/or ballast resistor. Finding the right combination these days may not be easy, NAPA will probably be your best chance. Another option is to use the points to trigger an MSD.
by jmarkaudio
Sat Dec 07, 2013 2:05 pm
Forum: Racing Converters
Topic: 1/4 mile converter slip??
Replies: 12
Views: 4391

Re: 1/4 mile converter slip??

I resent that SB2 comment, my 461 CI SBC with SB2's makes over 700 ft/lbs of torque... :mrgreen:
by jmarkaudio
Sat Oct 19, 2013 2:26 pm
Forum: Engine
Topic: Ignition timing, guessing game or not?
Replies: 5
Views: 2252

Re: Ignition timing, guessing game or not?

Cranking compression might tell you something about the cam, but to arbitrarily say timing is too high because of it doesn't factor in the rest of the info. Larger heads may need you to turn up the wick a little, more RPM, more converter stall or gear to see gains.
by jmarkaudio
Thu Oct 17, 2013 1:23 pm
Forum: Engine
Topic: Ignition timing, guessing game or not?
Replies: 5
Views: 2252

Re: Ignition timing, guessing game or not?

Timing needs are a combination of things, the primary factor being the ability of the combustion chamber to have a homogenized mix and have an even burn through the chamber. If the fuel quality is good, one that atomizes and vaporizes well the distribution will be more even and require less timing. ...
by jmarkaudio
Sun Oct 06, 2013 8:18 pm
Forum: Engine
Topic: E-85 Pros and Cons
Replies: 3
Views: 2101

Re: E-85 Pros and Cons

I've run on a 13.2 to 1 427 SBC and a 14.5 to 1 447 SB2 head engine with no issues. 5.04 in the 1/8 with the 447, 5.28 with the 427. I did run one night with a 1050 on my 461 SB2 at 15.5 to 1, ran a string of 4.91's. When I get it back together, broke lifter, I'll try a 1250 on it, should be good fo...
by jmarkaudio
Thu Jan 24, 2013 4:01 pm
Forum: Racing Converters
Topic: Stator?
Replies: 2
Views: 1699

Re: Stator?

OK, now we need pictures... :thumb:
by jmarkaudio
Thu Nov 22, 2012 11:41 pm
Forum: General BS
Topic: 2012 BLP Carb Shootout
Replies: 3
Views: 1773

Re: 2012 BLP Carb Shootout

Yes, I have a 2.400 billet carb I'll run again on the big block. The intake is conventional this year, will be skewed less by the variety of tops used on the Dart Box Ram last year. Small block is essentially the same engine with a small change in RPM for the pull. I have two carbs I have to chose f...
by jmarkaudio
Wed Nov 21, 2012 5:07 pm
Forum: General BS
Topic: 2012 BLP Carb Shootout
Replies: 3
Views: 1773

2012 BLP Carb Shootout

Here is the links for this years Carb Challenge at BLP. There will be a mic outside the dyno room for interviews, so you will hear a little interaction this year. Small Block Saturday and Sunday http://new.livestream.com/speedwayillustrated12 Big Block Monday and Tuesday. http://speedtalk.com/carb-s...