Originally Posted by SPEEDNEEDS1
I HAVE A 468 GM 990 HEADS, .714-.680 ROLLER CAMSHAFT, 12.9 COMPRESSION. I TRADED FOR THIS ENGINE AND IT CAME WITH THE FLYIN TIOLET. IT HAS A .39 JET IN THE NOZZLE, AND A .090 IN THE RETURN. ANY IDEA IF THIS IS CLOSE OR IS IT IN LEFT FIELD????? ANY HELP WOILL BE GREATLY APPRECIATED. ALLEN
Nozzle is big IMO also id rather see a 37 in there. With that head on there, I think you'll find it likes timing around 39-40 degrees.
Any idea where the barrel valve is set at ?