big bore vs stroker

[banshee67]

hey i was thinking which would offer more power and keep the snappy acceleration without it bogging out? any opinions?

[Phelps]

bore and stroke has nothing to do with bog....... stroke in most cases is the better way to go.

[mopar1rules]

Adding compression will always help out throttle response and low end grunt all the way to top end and its cheaper than either of the above options.

[RagunCajun]

When I stroked mine I was told it would smooth out the hit and it did.

[banshee67]

i mainly was wondering wich would produce a higher power output

[toytech]

i mainly was wondering wich would produce a higher power output

 

it depends on how far you go with both, I went with a 4mil and an agresive dune port

[EvilBanshee]

i was always told you ll get more over all power out of a big bore then you will a stroker. strokers only give you low end torque.

[Nutwood 472]

i was always told you ll get more over all power out of a big bore then you will a stroker. strokers only give you low end torque.

 

 

I went with both,472cc stroker,72mm bore and a 4mil long rod crank,love it,has plenty of power and is pretty smooth,had Andy at M&M atv port the cylinders and cases,runs great!

[EvilBanshee]

I went with both,472cc stroker,72mm bore and a 4mil long rod crank,love it,has plenty of power and is pretty smooth,had Andy at M&M atv port the cylinders and cases,runs great!

 

Wow that s sounds like a kick ass kit. Im in the middle of building up a 421 with the 68mm bore and a long rod stroker crank. Im hoping it should make some serious power. Where did you get that 72mm sleeve from???

[Burt Reynolds]

IF your keeping stock cylinders i would go with a stroker. Take for instance a stock port bike with 30mm carbs and toomey t5's,you are probably in the range of 45ish hp. Drop a 4mm crank in and lower your ports to run it correctly and you be up in the 60's for hp.

 

You can get really high hp out of a big bore stock crank cub,but then you will have a mostly drag motor. STock cylinder ported 4mils set up right are monsters

[banshee67]

so if i bored up too about a 400cc, would i get better power with that or say a 2 or three mil crank

[EvilBanshee]

oh for sure, i use to have a 404 big bore, stock stroke, that thing was pretty wicked fast at the high end. but it had zero low end power.

[banshee67]

wouldnt the crank add somemore bottom end?

[EvilBanshee]

wouldnt the crank add somemore bottom end?

 

Oh for sure it would, hell do both, That way you get the best of both worlds. I just bought a entire engine kit from Vito's. 421 68mm big bore with a long rod stroker kit.

[banshee67]

do you know where i could get a 2 mill crank for a decent price? all i have found are 4 mill and above