Performance 460 F350
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Joined: Mar 2006
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From: fargo, nd
521 stroker means 521 cubic inch displacement... or i cant remember the chamber size on the fuelie heads- you might be able to go 545 ci but that would be pushing the compression limit on even pump premium, which is why i usually just say a 521.
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From: fargo, nd
but to take advantage of a blower you have to set the engine up for low compression... if you set the engine up for higher compression you wont need the blower as much- the way i see it a blower is just a way to make up for not enough compression in the first place
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From: fargo, nd
being efi there really isnt any aftermarket parts... you can get a little bigger throttlebody but thats about it... its not like a 302 where you can get any aftermarket fuel injection part you want and build it however you want... if you were willing to go to a carb setup and instead of a carb put a big aftermarket tbi in then you can build the engine however you want... the hard part is that the fuelie 460 heads are different than the carb heads
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Joined: Mar 2006
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From: fargo, nd
ive just had better luck with carbs... every fuel injection system ive ever had has had major fuel system problems... thats why i stick to vehicles made before 1979. my most reliable car was my 1969 mercury monterey... put over 10,000 miles on it and all i had to do was replace a brake line and the starter... took it across the country on vacation... ended up getting all my money stolen and had to leave it in myrtle beach... i miss that car.
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Senior User
Joined: Dec 2004
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From: Charlo, New Brunswick
a 545 stroker could work with 39cc dish pistons and ported stock heads (around 8.8:1 CR) the thing would be a torque monster because of the small ports and restrictive intake... would probably put out around 375hp/600ftlb or something after some tuning and a couple thousand $ in parts
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Joined: Mar 2006
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From: fargo, nd
yep if you were willing to buy custom dish pistons you totally could run a 545... but i always look for off-the-shelf parts... and the biggest stock dish ive seen on 545 pistons is 22cc... and with bigger 36lb injectors and a bigger cam you could probably do better than 375 horse... maybe 425-450... but the intake and throttlebody are your big restrictions after upgrading to headers
Senior User
Joined: Dec 2004
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From: Charlo, New Brunswick
JE makes an of the shelf forged 4.39" pistons w/ 39cc dish (made for a 521 using 6.80" rods and 4.30" crank, but works with a 4.50" crank and 6.70" rods), summit sells them for 730$ a set... 400+ hp is easy if the intake flows well enough... wich I'm not sure
Last edited by 302s&460srocks; Nov 29, 2006 at 10:56 PM.
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Posting Guru
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Can you list everything I would need to make this a 521 or 545 stroker. I need to start buying the parts,so all thee parts are important. Which is better, the 21, or the 45? Are they worth it, is a supercharger still the better more efficient way to go?
Posting Guru
Joined: Mar 2006
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From: fargo, nd
well... its up to you where you want to put your money... but my vote is the stroker. for the 545 all you need is a scat cast 4.5" stroke crank-scat part #9-460-4500-6700-2200, scat connecting rods part #2-454-6700-2200, je pistons part #170879, your piston rings of choice, proper engine bearings, and youve got a pump gas 545. www.cnc-motorsports.com has all the shortblock parts at some of the best prices ive been able to find, and if there are any questions im sure theyll be able to help you. also dont forget to get the whole assembly balanced at whatever machine shop you choose to do your cylinder boring just to make things simple
