Problems with 427 strokers??

1726 Views 7 Replies 7 Participants Last post by Redneckracer21, Mar 6, 2006

Redneckracer21

Discussion Starter · Mar 6, 2006

I've been looking into building a stroker outta my 351W i have. I was wondering if there are any reliablility problems with a 427 stroker?? I've heard a little bit about oil comsumption, but nothing really concrete. I was also wondering if the rod-ratios would affect it at all? The motor is going in a street-strip car and i don't want to be rebuilding it for a long while. Thanks.

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1 Bad 88 GT

· #2 · Mar 6, 2006

Depends on what combo you use to obtain the desired cubes. Stock block or or 4.125" bore Dart block?

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bmcd66250

· #3 · Mar 6, 2006

Most builders recommend not taking a stock block past 408 cid. Has to do with the rod angle working against thin cylinder walls.

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dfree383

· #4 · Mar 6, 2006

They say the same thing about 347's and I haven't noticed anything unusual about mine for 2 seasons...........

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mavman

· #5 · Mar 6, 2006

Well, you can use 6.25" rods with 347 pistons (1.10 compression height) and still have a better rod-stroke ratio than a lot of other V8's out there...including a 454 chevy and a 400 chevy. We all know that neither one of those has side-loading problems.

I say do it. What do you want, a motor that makes huge torque numbers down low or a motor that someone says "won't work"?

Be aware though, those short skirt pistons will have the pins in the oil ring, which requires support rails. So what, it might use a little oil. Hot rods all leak and burn a little! I would bet that with the right cam, heads, and compression 550-600 lb-ft or torque could be had without much hassle...and with those light pistons, it'll rev really fast!

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85mike

· #6 · Mar 6, 2006

Use the Dart or World block for anything larger than the 408.

I've built them both using the 6.200 d 6.250 legth rod without a problem. No pin up in the ring package either.

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Beoweolf

· #7 · Mar 6, 2006

On 2006-03-05 20:12, Redneckracer21 wrote:
I've been looking into building a stroker outta my 351W i have. I was wondering if there are any reliablility problems with a 427 stroker?? I've heard a little bit about oil comsumption, but nothing really concrete. I was also wondering if the rod-ratios would affect it at all? The motor is going in a street-strip car and i don't want to be rebuilding it for a long while. Thanks.

Guys,

He never mentioned a few important things'; What bore, stroke, rod length, pin height, block, deck height?

I can understand the assumptions being made, but it seems before giving advice on longevity, oil consumption, side-loading, etc. - you need to establish just what kind of components are going into the build. I'd argue that building an engine to a preconcieved size is not the way I would approach the problem (you could swap in a BBF if you just wanted big engine - yeah, I know - that brings in a whole new set of problems

). If it was me, I would decide what power level I was looking for, then figure out how to get there.

Boring a block to the Max, just to be able to say you have "X" cubic inches, then saying you are worried about longevity, seems counterproductive. Is 18 cubic inches going to make that much difference? .060 over on a 351 with maximum stroke crank and maximum rod lenght is just asking for problems down the road. Not saying that it will happen, since I don't know how hard you intend to drive it, whether or not you you are likely to "juice it" or put a supercharger on it later. There are a lot of reasons to stay off the boring bar if you are intending to stroke the engine.

If you are looking for cheap cubic inches, then you can't expect longevity, you have to trade something to get something. Hot rodding has always been about compromises...remember that old adage - Speed costs money, How fast do you want to go? You can also paraphrase that quote to see it from another point of view... reliable performance costs money - how durable do you want that engine to be?

_________________
"They that can give up essential Liberty to obtain a little temporary safety deserve neither Liberty nor safety"-- Benjamin Franklin

<font size=-1>[ This Message was edited by: Beoweolf on 3/7/06 12:38am ]</font>

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Redneckracer21

Discussion Starter · #8 · Mar 6, 2006

Thanks for the input guys. So if i'm going to drive this thing close to everyday except when there is snow actually falling i would be better off to go with something smaller? And i only have a 72 stock block to put it in, i can't afford a dart block. It doesn't matter to me if i have to reduce it to a 408, i heard some issues with the 427 and i thought i'd ask you guys. thanks again.

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