Super Frustrated!! need help

[djais1801]

That's good news... But I would still go over & see what he's doing & make your presense know... It may keep him motovated to finish, finally... Maybe you can learn something while your there watching...

yes...i went over yesterday and calm but assertive told him i need it by this weekend, and if he needs my help i can come by after 3pm. when the carb blew the power valve, gas got into the oil. so we changed it 1x, then i picked up some Brad Penn 10-40..to swap oil again.
He called me today..has the timing set, but it's still running lean. he thinks it's the gas, that it needs higher octane? If the timing is fully advanced, and new carb...what possible other options to it running lean?
could the 509 cam be screwing with it? apologize if that question is in "left field" just shows how novice I am to the mechanics of it.

 

[djais1801]

well..just went by his house and he got about 1/2 tank of Sunoco 104 and it's running fantastic!! Should have it back by this weekend.

 

[Budnicks]

I'm not sure what all is in your complete engine combo, but for example here are a few things to consider... With that camshaft... More than likely... It no doubt needs more jet, more squirter, more accl. pump cam, lower # of power valve too probably, higher flow of fuel pump, check fuel float levels, less restriction in the fuel system, a good cleanable fuel filters before the fuel pump & before the carburetor, a good K&N type or equivalent gauze type air cleaner & maybe even a colder spark plug, with some quality low ohm resistance plug wires, a hotter coil & ignition box or ECU... If the guy is a decent mechanic at all, he should really know that already... With that camshaft it will probably need to be somewhere in the neighborhood of 12*-15* of initial timing & 34*-37* total timing at 3500rpm, when fuel & ignition is correct, for everything to run right...

 

[djais1801]

She has a 3500 stall, 391 rear, ported 906 heads. about all the info i got from previous owner

 

[Budnicks]

I hope this guy acually know something about tunning a performance engine & is not just the typical grease monkey parts replacers, that all seem to work for the state, city or county...

 

[djais1801]

I hope this guy acually know something about tunning a performance engine & is not just the typical grease monkey parts replacers, that all seem to work for the state, city or county...

for what it's worth...i know that he used to have a 70 charger, and currently has a 69 corvette worked 400 4spd..

 

[Budnicks]

for what it's worth...i know that he used to have a 70 charger, and currently has a 69 corvette worked 400 4spd..

That is a little more incouraging...