434?
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From: fargo, nd
434?
i was just debating looking for a 351w and stroking it instead of doing a 347 stroker on my 302, and came across a 4.25" stroke forged crank for a 351w for 510 dollars... what im wondering is if it would fit a stock 351w block? i know it would bolt in because its got the same main journal size and spacing, but would i have to have the block clearanced? would i have to find an aftermarket block with longer cylinder walls? with a .030 overbore it comes out to a 434... id probably have to have custom pistons though... too many options and not enough direction. heres a link to the crank i was looking at
http://www.cnc-motorsports.com/produ...520&CtgID=8509
http://www.cnc-motorsports.com/produ...520&CtgID=8509
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From: fargo, nd
for my 460 to 545 build everything bolts right in, no clearancing anything required... all i need for machine work is a .030 overbore and balancing the rotating assembly... if it would fit id just throw a 545 in the maverick too... same price for the lower end stuff, and a much stronger block... but it wont fit 
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From: right here in michigan
basically any stroker for a windsor will need a little grinding at the bottom of the cylinder for the rod bolt swing thru.on a 4.25 stroke you may be into the pan rail where it narrows up on two cylinders.does the pin get into the oil ring with this stroke?
edit:that is a pretty good deal,internal balance too.
edit:that is a pretty good deal,internal balance too.
Last edited by bronco521; Feb 18, 2007 at 01:45 AM.
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From: fargo, nd
id read that somewhere too... i wasnt sure if it was a clearance issue or a power issue... i know the stock 351w block is only reliable to about 550 horse... but i wouldnt cam or revv it to that point... i used to have pictures of a 302 block split in half from trying to push 500 horse through it. 347 forged kit with girdle... girdle was the only thing that held the two sides of the block together after a 75 horse shot of nos.
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you can get 434 in a stock block.
385 blocks are very nice when doing strokers because of the good clearence.
if your going to get big power with a stock block, get a main support. its worth the $120 or whatever it is.
385 blocks are very nice when doing strokers because of the good clearence.
if your going to get big power with a stock block, get a main support. its worth the $120 or whatever it is.
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From: fargo, nd
i was figuring around 450 ft-lbs and 300-350 horse at a reasonable rpm for a 434 in the maverick... i know i could get a whole lot more horsepower out of it than that, but i dont want to have to revv it like i do my 4 cylinder probe.
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From: right here in michigan
what heads are you putting on it?if they aren't some big ones it won't rev much anyway.those numbers should be easy to get with that many cubes but for the same effort i think you can get more.
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From: fargo, nd
i was figuring afr 185s... not real big but good for street 
i could probably do the 205s but i dont want to cut down on the low end
i could probably do the 205s but i dont want to cut down on the low end
Last edited by darrin1999; Feb 19, 2007 at 04:43 PM.
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with that many cubes low end shouldn't be a problem.i would say the 205's won't give up much on the bottom to the 185's but would make alot more mid because the port volume would be closer to what that many cubes would need.
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From: fargo, nd
im going to have to double-check shock tower clearance for the 351w... i know its about an inch and a half wider through the top than the 302... and the 302 is a pretty tight fit already. i should be able to use my dremel for any clearancing i need to do... after all why pay someone to do something you can do yourself for little or nothing now all ive got to do is find someone thatll do the headers for it... or somewhere that has them. im a little welding impaired
now all ive got to do is find someone thatll do the headers for it... or somewhere that has them. im a little welding impaired
Last edited by darrin1999; Feb 20, 2007 at 07:28 AM.
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From: fargo, nd
how strong is a 8" rear? im not too worried about the c-4- i know it would take it- would the 8" take a 434 or do i have to go out and get a 9" custom shortened? if the 8" wont take it ill probably just stick with the original plan of the 347... i think it would be a whole lot easier all around because i can get shelf headers for it, shelf motor mounts, pretty much everything is shelf components because the 302 was a factory option. besides, i already have 2 302s i could rebuild spare parts are good.
spare parts are good.
Last edited by darrin1999; Feb 21, 2007 at 03:59 PM.
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From: Fairmont
I would question the rod to stroke ratio.
This kit has such a small ratio, that I have to question longivity. I had a conversation with the engineers at KB piston about this kit. They strongly urged not to go below 1.5:1 rod to stroke ratio.
This kit has such a small ratio, that I have to question longivity. I had a conversation with the engineers at KB piston about this kit. They strongly urged not to go below 1.5:1 rod to stroke ratio.