Motor will not turn past 6000 rpms
Had my first race of the season last week (been out due to back surgery).Money was a little tight due to doctor bills. Got a rebuilt motor from a friend for a great deal, he does a good job for the price. Ran a 6.20 gear last week and turned 6k. Felt like i was hitting a rev limiter coming out of turns and down straights. Switched to 6.50 gear for this week, exact same thing, 6k is it! From past racing it should be around 6800 with that gear. On starts and restarts it will stay on the bumper of the top 5 cars thru first turn and then fall flat. Brand new street fire MSD, not locked, brand new Holley red fuel pump, new ar 135 plugs. tried timing from 32 to 38, no difference. Could it be carb, fuel pressure, cam, plug wires, Im at a loss. Im Gonna put a flame thrower 50k coil and matching module in this week, new plug wires. 355 motor, 425 lift cam, 600 holley carb, engine builder adjusted valves last night at track and no change, heads are fresh 882's.