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360 wont rev past 3k.... HELP #1690257
10/25/14 01:10 AM
10/25/14 01:10 AM
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moparguy93 Offline OP
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I recently built a 360 small block. I took it out for a test drive to day and I noticed once I hit 3000 rpm it stumble and starts popping bad. it happens in all gears. when its in park it only revs to 3500 but will stumble. my rev limitor is set at 6200. please help.. THANKS

engine specs-
74 360 bored .030 over
kb 107 pistons
eagle rods and cast crank
lunati 513/533 cam
1.6 roller rockers
lunati valvetrain
m1 intake 750 speed demon carb
6.5 fuel pressure
jets 74/83
6.5 power valve 9 hg idle/ 6 in gear
msd 6al-2 ignition/pro billet distributor

Re: 360 wont rev past 3k.... HELP [Re: moparguy93] #1690258
10/25/14 02:05 AM
10/25/14 02:05 AM
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Posts: 296
Ontario Canada
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Hutch Offline
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What ignition box are you using?


Hutch

Re: 360 wont rev past 3k.... HELP [Re: Hutch] #1690259
10/25/14 02:08 AM
10/25/14 02:08 AM
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mn
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moparguy93 Offline OP
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msd 6al 2 programmable part number 6530

Re: 360 wont rev past 3k.... HELP [Re: moparguy93] #1690260
10/25/14 02:20 AM
10/25/14 02:20 AM
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Posts: 296
Ontario Canada
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Hutch Offline
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Sorry, thought maybe you had a 7 series programmable box that may have had a downtrack rev limiter (time based). They can do that.


Hutch

Re: 360 wont rev past 3k.... HELP [Re: moparguy93] #1690261
10/25/14 04:10 AM
10/25/14 04:10 AM
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Quicktree Offline
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check your float levels, if thats ok find another control box

Re: 360 wont rev past 3k.... HELP [Re: Quicktree] #1690262
10/25/14 05:55 AM
10/25/14 05:55 AM
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mn
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moparguy93 Offline OP
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Just checked my float level and they are both high... will that cause the problem I'm having

Re: 360 wont rev past 3k.... HELP [Re: moparguy93] #1690263
10/25/14 07:57 AM
10/25/14 07:57 AM
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it's possible if it running over.lower them to about half way in the sight glass and try it

Re: 360 wont rev past 3k.... HELP [Re: Quicktree] #1690264
10/25/14 08:03 AM
10/25/14 08:03 AM
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moparguy93 Offline OP
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OK I'll lower than floats in the morning to see if that helps.. any other suggestions from anybody?? Exhaust smells real bad and the plugs look fine..

Re: 360 wont rev past 3k.... HELP [Re: moparguy93] #1690265
10/25/14 08:11 AM
10/25/14 08:11 AM
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Arizona
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Chris'sBarracuda Offline
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1. Disconnect the tach.

2. Try a different box.




Chris..

Re: 360 wont rev past 3k.... HELP [Re: Chris'sBarracuda] #1690266
10/25/14 08:50 AM
10/25/14 08:50 AM
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yea it would be great if you could borrow another 6al-2 and swap it out.

Re: 360 wont rev past 3k.... HELP [Re: Quicktree] #1690267
10/25/14 09:52 AM
10/25/14 09:52 AM
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north cakalaky
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is this the 1st time driving it.....i had the same problem and the pickup wires going to the distributor were backwards.


65 Barracuda
All aluminum Indy HEMI with some boost!
COMING TO A TRACK NEAR YOU!


Re: 360 wont rev past 3k.... HELP [Re: instigator] #1690268
10/25/14 11:42 AM
10/25/14 11:42 AM
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Pennsylvania
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Red 79 Offline
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Quote:

is this the 1st time driving it.....i had the same problem and the pickup wires going to the distributor were backwards.




First thing I'd check with symptoms you describe. The distributor pick-up will work either way it's hooked up, but if backwards it throws the rotor phasing way off.

Re: 360 wont rev past 3k.... HELP [Re: Red 79] #1690269
10/25/14 08:45 PM
10/25/14 08:45 PM
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moparguy93 Offline OP
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Problem fixed!!!!!! Distributor wires were switched around. Revs to 6k no problem now. Thanks for all the help

Re: 360 wont rev past 3k.... HELP [Re: instigator] #1690270
10/25/14 09:49 PM
10/25/14 09:49 PM
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Quote:

is this the 1st time driving it.....i had the same problem and the pickup wires going to the distributor were backwards.


great job i totally forgot about that.

Re: 360 wont rev past 3k.... HELP [Re: Quicktree] #1690271
10/25/14 10:15 PM
10/25/14 10:15 PM
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Arizona
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Chris'sBarracuda Offline
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Quote:

Quote:

is this the 1st time driving it.....i had the same problem and the pickup wires going to the distributor were backwards.


great job i totally forgot about that.





Usually when that's the issue, they cough spit and sputter when trying to start..


Chris..







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