Pipe Recommendation For 421 Cub ?

[GrayRacing]

ok guys, everyone tells me that a cub will run 2 or 3 tenths slower with bigbores on it, and the thing is, i had grandriver sb pipes on and it blew them off, it sound like the motor wouldnt clear out, but then, i changed my pipes at the track, i put on my Wicked Performance bb silent pipes on, and it ran a million times better, it cleared out and everything, so if anyone could, id like to hear from the experts, and know what size pipe, and what kinda pipe i should run, it would really help me. thank you if u do.

[ATVDRA]

ok guys, everyone tells me that a cub will run 2 or 3 tenths slower with bigbores on it, and the thing is, i had grandriver sb pipes on and it blew them off, it sound like the motor wouldnt clear out, but then, i changed my pipes at the track, i put on my Wicked Performance bb silent pipes on, and it ran a million times better, it cleared out and everything, so if anyone could, id like to hear from the experts, and know what size pipe, and what kinda pipe i should run, it would really help me. thank you if u do.

 

 

The Wicked pipes build power much lower than the average and that really makes a difference when you can start using your power earlier and the will rev as to what you will need on a cub. Try giving him a call and he can tell you by the specs what would work best for your app.

[dajogejr]

If the porting on the cubs is stock and just cleaned up...then small bore shearer or CPI.

If it's ported, run what whomever ported it recommends.

[locogato11283]

i say shearer either way. if it ran better with the BB why not run them?