<rjbm1204@yahoo.com> wrote in message
news:8ef6a437-f781-404a-93f8-8ed0d345f8e2@d10g2000pra.googlegroups.com...
> hi to you all my name is roy and i drive a 1989 toyota 22r pickup 2
> wheel drive. i just finish overhaulling my truck i slap on a 283 comp
> cams, port and polish my head both the intake and exchaust, 45 webber
> sidedraft , headers i think short stack, 15lb flywheel, 5 speed
> trans. and also change my pinon on my defrencial. its seems pretty
> fast but my problem is when ever i try to race it would bug or stall
> on me at 4,500 rpm, why is that? and when i shift to the next gear
> when it reaches 4500rpm it does the same thing. what can the problem
> be? i try changing my fuel pump to a stronger one, i change me spark
> plugs platnum, msd coil, 8mm msd wires. and still does not perform
> right. please anybody help me... thanks

What is manifold vacuum at idle?

Check to make sure that the ignition timing advances with engine RPM.


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Ray O
(correct punctuation to reply)