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#11 |
Registered User
Join Date: Feb 2012
Location: So. Cali.
Posts: 2,673
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First and foremost :
Make sure it's properly tuned ! maybe one in every 100 engines i touch , are anywhere near properly tuned . If it has points set the plugs gaps to .040 or .045 , if HEI , set to .050 or .060 , you'll feel the increased power immediately . If it has points , make sure the points gap isn't over .014 as closer gap makes for better coil saturation , resulting in hotter sparks . Timing is critical too , unlike the average 350 SBC , a 250 needs very little primary lead advance to create peak power @ work ~ what this means is : don't give it 12 degrees lead advance (static or dynamic) , try it @ TDC first then maybe give it a few degrees . The biggest bang for your buck is to upgrade from breaker points ignition to HEI , even if just an old stock dizzy & coil . You've always gotta do the basics before moving on and be aware , these are light duty engines so Hot Rodding them leads to extremely short service life and to loose nut behind the wheel , blaming the truck instead of themselves .
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-Nate Geezer '49 3100 235 W/ Muncie SM420 SOLD '69 C/10 shortbed sidemount survivor 250 L6 W/ 350TH ![]() |
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