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How to make a 347


Guest jens

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Check out Probe Industries. Probe uses some good parts and has all th estroker stuff you could want for Fords. I seem to recall they use Eagle rods and Ross pistons but I might be mistaken. I've got their stuff in my 351W icon_smile.gif When you get to the 427 sizes do NOT skimp on heads and do not think that a mostly stock set like a GT-40 could be ported. Go with something that flows and is made for BIG cubes or you'll regret it. I know of at least one person who didn't listen to this advice and made little HP but tons of torque. He's buying good heads and intake now icon_biggrin.gif

 

Speaking of intake - GT40 lower isn't bad but go with a BOX upper for a bigger motor. The GT-40 upper has runners that are too long for a big cube app. Those runners are to make torque and in a 392+ cube motor torque is NOT a problem, airflow is! Consider converting a carb intake to EFI.

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I think that the 351w with a edelbrock 400 hp rpm package or the 385 hp ford motorsport package would be good enough for me as i have

read that a sirius 408+ cui engine should be build in a siamesed higher deck block from ford motorsport as the stock block shouldnt be bored more than 0.30". But i have seen a 408 probel a streetlegal 66 stang in the 10s with 9" slicks so high 11s shouldnt be a problem with a milder cam in a z. this company sells a 426 stroker cheap. http://www.rpmengines.com/RACING/mild_performance_engines.htm

But its only for mild performance so i wonder how good it is and that bore size they use as it got to be a stock block and maybe a offsetground 400 crank.

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I was wrong a 426 can be built in a stock block

Probe sells a 4.17" crank for 595.99$ and 6.125" rods for 449.99$ so with a 4.030" bore its a 426. But the piston pins is going to be very close to the rings.

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Guest Anonymous

They're prices seem pretty good. I havn't seen a graph of its power output (the 426), be nice to see what its torque/horsepower curve looks like. Of course as with almost any stroker, traction will be the biggest concern. icon_smile.gif

 

Regards,

 

Lone

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