I think to much some slap me, 3s < 5s Options

[macavely]

Ok so toyota has the 3s block which is a great one we all know this .. but see as its te 3th make of the S block wouldn't the 5S be a better block ? ... why would toyota make the 5 th version of the block weeker then that of the 3rd? .... and while at it why would the internals be weaker ? it just would make any senne for toyota to not move up .. and keep there "toyota is for ever " thing going ... and then why would they put the 5S in so many cars and in the one that they sell the most ? unless it can take abuse like a pro ? then i'm thinkin my eingine has 221,XXX K miles on it and she is still strong ... and doesn't burn oil ? now what i want to try is doing is fine and camary with the SS and boost it the right way and see how much before it will blow up ....

[orvillescelica]

i think its jsut the way they number the engines. You shouldnt think of it that they are always trying to improve on the engine. When they are, they create the 3rd gen 3s vs. the 2nd gen 3s.

When they 5s and 3s, think of it as the 3rd time they have used the s block and the 5th time they have used the s block. Although they were created using the same block, they were developed with very different requirments in mind. The 3rd time they used the s block as a base (3s) to start on, they requirements were performance and the ability to handle turbo pressures. The 5th time they used the s block as a starting base (5s), their requirements where fuel economy, long life, and cheaper production.