my77stang

maybe you need to proofread that last post, cause i read it like 4 times and couldnt understand what you were trying to say[8D]

anthros

look at the rod ratio of a stock chev 445 big block then come and talk to be about rod ratio, a 347 or 427 stroker kit has a lower rod ratio then that engine and you cant get that chev enginge to break if maintained..... its ALL in balancing, clearences, and assembly.

ncplaya88

This post is mostly about putting in a stroked 302 or stroked 351. The 351 seems to always win tho lol

my77stang

anthros i think you meant 454, and you can believe they werent balanced worth a **** (like all motors from ford, dodge, chevy from "back in the day"). they werent high revving motors, they were made for bottom end grunt. plus, being a big block everything is thicker and can handle the extra stress.

its the same reason i would build a 429 before i built a 460. or the same reason a 427 chevy is a better motor than a 454..... the huge stroke motors are excellent for trucks, vans, campers, 4x4s, stump ripping torque - but they are not suited to rev high like the smaller stroke configurations are.

i dunno about you, but i'd rather loose a little on the bottom (in all honesty it makes it easier to hook and book) and be able to bring that sucker up another 1500 rpms or so @ the top where its actually making big power.

so, shifting @ 6800 > shifting @ 5300 (basing this off a 5500 redline)

aode08

No replacement for displacement.

But a properly built shortblock can give comparable results if you went big.

Anyone heard of ruger and his Dart block twin turbo project?

w8less

aode it was just a single turbo and nope but good question. same goes for samseed and iceman

Joel5.0

+
+
Simplified to the mentioned R:S issue =
I4 1.9L= 1.49 R:S
I4 Zetec 2.0L = 1.55 R:S
I6 250CID = 1.50 R:S
I6 300CID = 1.56 R:S

331 = 1.66RS
347 = 1.59 R:S
347 = 156 R:S
408 = 1.56 - 1.5 R:S
427 = 1.48 R:S

Why is R:S such an issue for stroker setups, but not for OEM setups that have proven themselves to last 400K+ miles ?

ncplaya88

are stroker kits on a rebuilt motor not as reliable as a stock rebuilt motor? To me it seems the same, both are rebuilt. You can get over 100k miles out of a stroker motor right? whats R:S ?

VigCS

If it's a well-built motor they should be just as reliable. R:S is rod to stroke ratio. I'm not sure how it's calculate, but I believe it has something do with how hard the pistons push on the walls of the cylinder. Some believe it will warp a cylinder over time such that it's not completely round after a while running one.

92GreyGT

Any of them are as reliable as the quality of the parts used, quality of maching, and quality of assembly.