Beast96Z

iTrader: (21)

Basically, the stroke will produce more TQ down low. Strokers are awesome street cars due to the TQ. The all bore will produce higher HP numbers in the upper RPM's. There better suited for drag racing where the car stays in the upper RPM's more. Basically.......

DrkPhx

iTrader: (15)

There is a good article in Hot Rod magazine where they actually try to disprove or prove this theory with different big block engine configurations on an engine dyno. Pretty interesting results. Check it out.

DNAST1

Thanks for all the replies So now I move on to the next question which will open up a can of worms which is I see the 402, and the 427 being the most popular..... is it worthy to assume these 2 combo are also the most reliable (as far as not pushing the block to the extreme?). My ultimate goal is the cheapest(again reliable), way attain 500 RWHP on a daily driver(C5 MN6).

DrkPhx

iTrader: (15)

Theoritically the 402 would be more reliable than the 427 because it is not a resleeved block and puts out killer power.

Beast96Z

iTrader: (21)

Exactlly. There are a few sponsors that have pumped 550 rwhp out of 402's. If they were avalible when I bought my motor, that's what I would have bought.

11 Bravo

iTrader: (3)

Any of the motors will be plenty reliable if built right. I didn't see a 455 on the list. The bigger the better IMO.

Beast96Z

iTrader: (21)

I listed the 4.250 stroke as an option, but didn't actually draw out the package. Not to many people get that big because of the angle. The new Darton LS2 sleeves should be interesting to see how big you can get with the bore.......

11 Bravo

iTrader: (3)

Yes, but the 455 has no real world issues that I know of. Of course there aren't too many out there. No replacement for displacement. Built right, it should be good to go. If I could do it all over again, that would be my choice.

Builder

Here's a great page from Cartek with all of the bore/stroke relationships...

Beast96Z

iTrader: (21)

Which bore, stroke, and block would be your option to accomplish this? I almost had a 463 built for huge N/A power, but decided against it. I was gunna use a Callies/Darton block, Callies 4.250 stroke crank, and a 4.160 bore.

11 Bravo

iTrader: (3)

4.130 bore and a 4.25 crank. A 4.155 bore and 4.125 crank offset ground can get there as well. MTI is building 455's. I think they are keeping the specs secret But the one I saw posted made almost 550rwtq with almost 400 by 2000rpm's