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Bruce68

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Posts: 5
Reply with quote  #1 
Hey hope you can help me with some issues,after getting carb back from upgrade to venom 2 blocks and refresh. Car will not idle with venom 2s put old metering blocks back on car will idle but not we’ll transfer slots are square mixture screws are 11/2 turns out afr is from 13.5 to15.5 between 7and 9 in hg if I hook up Pcv valve tried 3 different ones vac drops to 6 in hg timing is 24 degrees initial. Car seems lazy and running dirty not at all crisp on restart afr pegs lean and will creep up to an erratic afr between 13 and 15 thanks for any help you can give me
PRO-SYSTEMS

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Posts: 3,660
Reply with quote  #2 
Reinstall the Venom metering blocks and baseline the mx screws at 2.5 turns out on your carb.  Thats how they should have been set when it left the shop, not 1.5.

E back the effect or give us a call OR E me direct at prosystems12@gmail.com

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Patrick James-President
Bruce68

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Posts: 5
Reply with quote  #3 
Thanks Patrick I will do that should I leave the transfer slots square? Will standard Holley 4150 gasket work with the venom2 blocks? That carb always ran great! When I put the old blocks on it didn’t seem to run like it did before I will replace the blocks and see how it does Thanks again
PRO-SYSTEMS

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Reply with quote  #4 
Yes it uses standard 4150 gaskets.

Keep me posted.

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Patrick James-President
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