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Old 05-20-2003, 12:33 PM
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Post Stroking a 454??????

Ok everyone, I always hear about the 383 being a monster with torque, and the same with big blocks. I was wondering why don't I hear about people stroking 454's? Is there a downfall to that somewhere? I've read in other postings that you can stroke a 454 to a 496, but never read anything about how they act. Can someone clue me in? Thanks!

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Old 05-20-2003, 03:00 PM
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i bet they are a monster! that would be sweet .. what makes a stroker?.. isn't it a larger crank?
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Old 05-20-2003, 03:06 PM
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I think that's what a 502 is. A stroker is,as the name implies,a crank that has a longer stroke than stock, thereby making the c.i. bigger.

[ May 20, 2003: Message edited by: woodz428 ]</p>
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Old 05-20-2003, 03:07 PM
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I`ve seen rotating assemblies up to 778 cui... Yes BBC... Think they use aftermarket blocks though...?
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Old 05-20-2003, 04:44 PM
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hm.. i would like to stroke out my 350.. where could i get a good cheep crank at?
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Old 05-20-2003, 04:59 PM
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A 502 is not a stroked 454. A 496 is a stroked 454 although i dont know the actual inches.

NOS what you want to do is easier said than done, and just by how you responded im guessing you dont have any expierence with it, if you want a 383 have a machine shop build it. Its a 350 block, with a 3.75" stroke crank {stock 400 stroke} If using a stock 400 crank it has to be turned down .200 to fit the smaller mains. Usually people get aftermarket cranks because of cost effectiveness and strength. Now you have to get new pistons anyways so your best off running a 6" rod and getting the correct compression height piston to match. Then you need to know if you have an external or internal balence assembly {if im not mistaken most 383's are external but you can get them internal} Based on wich balanceing you have you need to get a flexplate/flywheel and damper. Then when assembling it you may need to notch the block for rod clearance. When buying a cam you may need to get a small base circle cam to clear your rods. Also you may need to clearance your rods for the cam. Just a little insight
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Old 05-20-2003, 08:06 PM
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yea, i kinda thought there was more to it.. im only 17 sorry.. i would like to stroke my 350 out.. i wonder how much for all that stuff.. is there a kit for that?.. if so where anh how much
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Old 05-21-2003, 07:00 AM
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Nos. Summit sells a stroker kit to turn your 350 into a 383. I like to call it an "economy" set-up. It's a cast crank and hypereutectic pistons. Great for the street, but I wouldn't recommend using it with a blower and high boost or too big of a nitrous shot. It's a little over a grand. Here's the site so you can check it out.
<a href="http://store.summitracing.com/partdetail.asp?part=SUM%DCSUM383KIT" target="_blank">Summit 383 Stroker Kit</a>

About the stroker 454, does anyone know if this is a reliable set-up?
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Old 05-21-2003, 07:25 AM
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sweet! ill look at that
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Old 05-21-2003, 07:49 AM
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a 496 is a 454 with a 4.25 inch stroke and the stock 4.25 bore, a 502 is 4.5 inch bore and 4 inch stroke, and a 502 with a 4.25 stroke crank is a 540!!
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Old 05-21-2003, 09:58 AM
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As a Ford guy ,I new they stroked the things, just didn't know what the configurations were. That will be some info to rattle around until some future date, thanks.

[ May 22, 2003: Message edited by: woodz428 ]</p>
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Old 05-21-2003, 09:23 PM
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I can't tell you how it runs yet but it sure made some nice dyno pulls. I have a 496 which consists of a 454 block punched .060 over with a 4.25 steel crank and 6.385 H beam rods with srp forged pistons(10.5.1. Which made 673 HP on the engine dyno. I can't wait until I finish with the chasis to try it out! That was on motor no Nitrous! but with that low compression and the block being o ringed Nitrous should be a real blast
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Old 05-22-2003, 06:45 AM
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Sounds damn cool ss. Where did the power start coming into effect?, and what rpm was your peak hp and torque? I just asked this question because a 383 is very common, but a 496 isn't and there are people out there with 454's everywhere. I want to build one for my next project, but thought there might be something wrong with the set-up that made it not too reliable or something. Keep me posted on how things turn out! Thanks!
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Old 05-22-2003, 10:31 AM
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There is nothing wrong with a 496, its just that the crank is a custom deal, unlike a 383 where a used 400 crank and old 350 rods can be used with a little grinding. but ive seen a couple in cars, but if you are building a new motor i would throw the 4.25 crank in an old 502 block bored .065 makeing a 555 cui, it would cost about the same to build and make LOTS more power
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Old 05-22-2003, 11:59 AM
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That does sound better duece, no replacement for displacement...it's just funny to hear you say "old" 502. I don't know how it is in Denmark, but here in Cali, 502's aren't just lying around. Thanks for the info too. I was checking out your photo album, did you make that frame yourself? It looks pretty damn sweet!
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