so you are saying to just bore it out 3.70" over and add forged internals and the appropriate sized pistons?bdcardinal said:yes, you can put a stroker kit in an overbored block. the only thing thats different are the pistons. i personally think the stroke of the 4.6 motor is long enough and would never build a stroker motor. i would just go with a big bore(3.70").
FallenPhoenix said:one of the problems with our engines is that the borexstroke is almost square, not the best situation for a performance engine. Another problem is that the bore is so narrow that the valves are partially shrouded, upsetting smooth entry of the air fuel mixture and hurting power. The 4v heads see dramatic flow improvement with a big bore, the 2v can also benefit from this.
yea I know, I'm sure a lot of people would be interested in seeing thatbdcardinal said:i honestly have never seen a back to back comparison of a standard vs big bore modular motor test.
bdcardinal said:i honestly have never seen a back to back comparison of a standard vs big bore modular motor test.
Did you bore out your block when you got the stroker kit?johnnyvista said:well, there's the old addage that 'there's no replacement for displacement'. i can't say exactly how much power i got from the stroker motor by itself because i had some other work done at the same time. however, i can say that my car is a WHOLE lot faster than it was before the swap.
well i'll let you guys know how it turns out i think i'm going to do a big bore .25" over and put a 5.1 stroker in it this winter or spring.johnnyvista said:bdcardinal's right. but i haven't seen anyone doing a serious big bore setup on a 4.6 though. i'd love to see how it comes out.
i put in a new block with a .020 overbore. i figured it was a LOT easier to do it that way than to try and bore the block myself (or have a machine shop do it).
i've never seen anyone do a side by side comparison with a 4.6 - 5.0 or 5.1 stroker. i'd really like to see some numbers.
johnnyvista said:bdcardinal's right. but i haven't seen anyone doing a serious big bore setup on a 4.6 though. i'd love to see how it comes out.
i have CHP 5.1L stroker kit. here is the auto machine shop put on my receipt: bore 0.16 and hone 0.20 to plate. i dont even know wat the heck it is mean.Tony01GT said:well i'll let you guys know how it turns out i think i'm going to do a big bore .25" over and put a 5.1 stroker in it this winter or spring.and i think i'm going to have fox lake P&P my heads and get a big cam too
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