Engine Forged flat top pistons from 5.0 fit a 351 build?

2000xp8 said:

Let me clarify my statement a bit.
I'm not speaking to the shortblock aspect of the project.
My thoughts are if you have a good 306 currently, it's certainly not worth it to take it apart, buy all the 351 swap parts (which is going to add up), pay all the machine shop labor and then reuse 302 top end parts.
302 top end parts give you close to 302 results.
Let's not forget many of these projects go sideways, so who knows what you will encounter outside of what is predictable.

You could spend some money on mild head work (valve job, springs, bowl cleanup) with port matching to the lower intake, a custom cam (for sure) and make just as much power and spend probably 80% less money and do very little work.

Maybe even consider a used vortech and leave the parts you have and just upgrade the meter and injectors.

If you really want the 351, build a stroker on the stand purpose built from the ground up.
Take your time and do it right over the next few years.

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Yeah you might be right, I guess I’m bored and was trying to screwup with my engine which like I said is working flawlessly. And yes you’re right
Next time I open it I’ll do the valve seats and port polish the runners and bowls of those twisted wedge.
At this point I did the port match but I only did a gasket match and I know more than one will give me the reprimand “Gaskets aren’t templates” but I did that anyways. At this point I’ll try to do a real port match between head and lower intake to have a smooth no bumps transition between both of them. But again some will say doing that will do nothing but I have a different way of thinking.
A 408 stroker build is on my plans but obviously not doable with my actual budget but it is on my plans and it will be done with the best parts I can afford.

Considering the pros and cons of my initial plans probably will have to scrap that, unless I can get a good prediction of have better results compared with what I have with my actual 306

Thanks man

allFORDswapper said:

393 stroker: use those 306 pistons on the stock 351 connecting rods with a 3.85" crank and the 351 block bored .030 over

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I thought hearing something about 393 stroker somewhere, don’t know why almost everyone here discouraged me of using 302/306 pistons in a 351w. They’re forged and were never abused them, of course I have to cut 0.030” and use a different crank but they said NO.

As I mentioned the 306 I have now is working very nice but I was just analyzing the 351w possibility using those pistons from the 306.
Now the question is how reliable a 393 stroker is? By reading around I know a 408w is a nice combo.
So is it worthy trying to put a 393w stroker or I just save the money for a nice 408w stroker?

Thanks for your input

Qtrhrse23 said:

ARE we forgetting the 351W block will last years AND years of 500RWHP abuse, try that with a factory 302 roller. AND a 393 would make some blown 302s that are kept mild for weak block purposes eat a lot of dust.

Yea the crack to, but Id say 600+RW/6000 is all I would push it to. 302 no more that 425RWHP/5500.

A 351W stroker is a NA torque monster. And the stonger block is a definitely a plus. A NA 10 second 393W combo(3300lbs) is pretty easy to build, AND no worries about the block cracking.

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Yep that is a plus that makes one thing on the idea to build one of those strokers, reliability and longevity.