[23TGW]

i dont know any specs on my motor.

what emulsion tube are you thinking?

the car runs good with the main stacks out up to 4000 rpm. I get a stumble around 32-3500 rpm which i believe to be the introduction to the mains.

i had 170 mains and i put in 150's but have yet to test it out. i will try today.

also i have a stumble when i hit the gas at 3500 and below rpm range so i am going to pull the exhaust valve out so i can see if that helps that stumble and go from there.( i have 50's in now)

explain what you mean by main system too big...this motor revs 7000+