Strokers
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Junior User
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Strokers
g'day everyone,
im after a bit of grunt for my old beast so i've gone and got me a 460. in order to get more power i've been looking into stroker kits i.e 501ci, 502ci, and 557ci
the 557 sounds like the go but i don't know much about them. has anyone played with this sort of stuff before. some specs i found were
scat crank 9-460-4500-6635-2220-9000series
scat rod set 2-454-6800-2200-h beams 2-200 jnl rod set
wiseco 4.440'' flat top custom pistons 1.230'' .990pin
and a set of Edelbrock 60669 95cc rpm performer complete heads
if any one has got some tried and tested combos for me the info would be most appriciated.
cheers
getuted
P.S sorry bout posting in the wrong forum before!
im after a bit of grunt for my old beast so i've gone and got me a 460. in order to get more power i've been looking into stroker kits i.e 501ci, 502ci, and 557ci
the 557 sounds like the go but i don't know much about them. has anyone played with this sort of stuff before. some specs i found were
scat crank 9-460-4500-6635-2220-9000series
scat rod set 2-454-6800-2200-h beams 2-200 jnl rod set
wiseco 4.440'' flat top custom pistons 1.230'' .990pin
and a set of Edelbrock 60669 95cc rpm performer complete heads
if any one has got some tried and tested combos for me the info would be most appriciated.
cheers
getuted
P.S sorry bout posting in the wrong forum before!
Elder User
Joined: Jan 2004
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Could we interest you in a 514/521? 557 get the wrist pin holes up into the ring lands, which can cause problems.
This is from Paul over at BB Ford Heaven addressing a 557 stroker...
Brad
This is from Paul over at BB Ford Heaven addressing a 557 stroker...
In order to make this rotating assembly fit the 10.300 block, the pin bore must be located at 1.35" below the top of the piston. Machining the pin bore on this centerline cuts right through the bottom land of the oil ring groove. This would mean that during the upstroke of the piston, the oil conrol ring assembly will have no support directly over the pin bores, will flex downward and fail at doing its intended job.
To correct the cutaway portion of the lower ring land (that was caused by the pin bore machining step), the oil ring groove is now cut do a wider dimension that accomodates a ring support. This support is essentially a piece of material that is placed inside the ring groove and directly beneath the oil control ring assembly. It's purpose is to bridge the portion of the ring land that was machined away by the pin bore machining step. Oilah! The oil control ring has 360* support all the way around the piston again.
Are you sure I can't steer you toward a 533 with a 1.58 rod ratio and more piston-to-cylinder support at BDC?
To correct the cutaway portion of the lower ring land (that was caused by the pin bore machining step), the oil ring groove is now cut do a wider dimension that accomodates a ring support. This support is essentially a piece of material that is placed inside the ring groove and directly beneath the oil control ring assembly. It's purpose is to bridge the portion of the ring land that was machined away by the pin bore machining step. Oilah! The oil control ring has 360* support all the way around the piston again.
Are you sure I can't steer you toward a 533 with a 1.58 rod ratio and more piston-to-cylinder support at BDC?
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thanks brad
does anyone have any component numbers for a 514 or a 521 stroker, i have some numbers i think for a 502, does this sound like more of a sensible combo? im after power, and realiabilty! but isn't everyone!!!
does anyone have any component numbers for a 514 or a 521 stroker, i have some numbers i think for a 502, does this sound like more of a sensible combo? im after power, and realiabilty! but isn't everyone!!!
Hotshot
Joined: Dec 2003
Posts: 18,423
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From: iowa
well on option is to go with shorter rods ie 6.700 inch rods with JE pistons 4.440 with a 1.350 comp hieght, they arent quite so bad, or go 514 using a 4.140 stroke crank 6.700 rods, and je pistons, and these are better about the oil ring position, myself I am going with a 4.300 stroke 6.8 rods, and the JE pistons I mentioned with the 1.350 comp hieght for a 532cid, only problem is you really need to have a 73 or newer block as the 72, and older are exactly 10.300, and so is your piston so no room the square deck the block but after 73 they went to 10.310 giving .010 for decking to zero deck, and if compression is too high you can run the later heads with a 95cc chamber, and/or JE makes an inverse dome piston with a 39cc dish for the same stroker combo.
Also look at your crank selection it allows for the use of 6.635 rods so you can use even better pistons with a shorter rod, and not have the intersection problem, the biggest problem with a 4.5 stroke is make sure you clearence the block enough or it will hit.
Also look at your crank selection it allows for the use of 6.635 rods so you can use even better pistons with a shorter rod, and not have the intersection problem, the biggest problem with a 4.5 stroke is make sure you clearence the block enough or it will hit.
Last edited by monsterbaby; Sep 28, 2004 at 12:49 PM.
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thanks monsterbaby,
what about over boreing the block? does this type of combo have to be .080" or is .030" enough? this is my first stroked motor, i'd ''like'' to keep the compression around the 10:1 mark so i'll be using those edelbrock heads i mentioned before, i heard a "story" i might have to take them out to 100cc to accomadate for the pistons if i use flat tops. does that sound right???
what about over boreing the block? does this type of combo have to be .080" or is .030" enough? this is my first stroked motor, i'd ''like'' to keep the compression around the 10:1 mark so i'll be using those edelbrock heads i mentioned before, i heard a "story" i might have to take them out to 100cc to accomadate for the pistons if i use flat tops. does that sound right???
Hotshot
Joined: Dec 2003
Posts: 18,423
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From: iowa
JE makes the pistons in both .030, and .080 over, using the flat tops with a 100cc head, zero deck, 4.500 stroke and .030 over you will end up with 11.05:1 compression, and I come up with about 8.9:1 using the dished pistons
Senior User
Joined: Oct 2003
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From: Gig Harbor, WA
I've got the Scat 9000 4.5" stroke crank in my '77 Lincoln, .080 over, block and had no clearance issues. I haven't run it yet. The pistons are from Probe industries and have a 51cc dish in them.
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Laughing Gas
Joined: Feb 2002
Posts: 1,067
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From: Kincardine, ON
Stay with 30 over if you can
Getuted: the 30 over will give you room later if you need it. If you want 80 over than sonic check the walll thickness, some blocks are fine and others can be really thin. Best to have the piece of mind once it's bolted together. If you go larger (557) some Hard Block up to the water pump holes will help stabilize the cylinders, you need to run an oil cooler after this though. Studs or 4-bolt main conversion and a girdle would be good insurance. Your wallet will be your guide.
If cash is flowing free you could always look at the new block from IDT and make some big cubes, and if they produce the tall deck version......LOOK OUT!
Good luck with the project, and let us know how it turns out.
John.
If cash is flowing free you could always look at the new block from IDT and make some big cubes, and if they produce the tall deck version......LOOK OUT!
Good luck with the project, and let us know how it turns out.
John.
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From: Gig Harbor, WA
I'll report back when it blows or doesn't after 30,000 miles since I'm not filling the water jackets, adding main studs or 4-bolt mains. I did have the '77 Lincoln block sonic tested and my thinnest wall is .070" after boring .080" over, which I'm told is enough. My 557, 9.3 cr will probably never see over 4 grand, maybe never over 3 grand.
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thanks lads,
im gunna order the scat 557 stroker kit tomorrow it comes with 4.500 crank, scat rods, flat top je pistons i am also gunna get the 95cc edelbrock heads i talked about before. it will give me 10.5:1 compression with a 30thou overbore and hopefully be realiable!!! all the problems with the oil ring clearence is apparently ''fixed up'' with this kit to,(we will see) i've went and also the later block as well so decking wont be a drama i hope. now i've gotta decide on what sort of cam to run, im not real sure on how to decide??? all i know is that i want to run roller rockers and that sort of good gear. any help of advice will be more than welcome, as i have already made most of my disisions from this great site.
thanks again all
im gunna order the scat 557 stroker kit tomorrow it comes with 4.500 crank, scat rods, flat top je pistons i am also gunna get the 95cc edelbrock heads i talked about before. it will give me 10.5:1 compression with a 30thou overbore and hopefully be realiable!!! all the problems with the oil ring clearence is apparently ''fixed up'' with this kit to,(we will see) i've went and also the later block as well so decking wont be a drama i hope. now i've gotta decide on what sort of cam to run, im not real sure on how to decide??? all i know is that i want to run roller rockers and that sort of good gear. any help of advice will be more than welcome, as i have already made most of my disisions from this great site.
thanks again all
Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
in a stroker a solid roller will definatly make it talk, and lot's of good choices out there, and with that many cubes, even one that sounds radical on paper is not that bad to drive, I did some playing with dd2k using a 532 with 13.44:1 comp using one of the comp cams mud race/puller cams, and cam up with 714hp at 6500rpm, 705ft/lbs between 4500-5000 (using the bigger of the two roller cams in that section) big cubic inches do require lots of air so you will need an agressive cam.
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i was sorta looking at a roller cam to make it real nice but if angry is the way i have to go than so be it! what sort of rpm will this thing handle, blokes over hear say its a "truck" motor and won't pull any more than 4000 rpm??? 6000rpm would be nice
Senior User
Joined: Oct 2003
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From: Gig Harbor, WA
Just for info and compario. My machine will never see more than 4 grand, probably never over 3, so I'm in a different ball park altogether. I'm looking at different cams since at 557 the bottom end should take care of itself and the top end I don't care about. Actually, the 557 may never make it into Big Red, as long as the original 360 behaves itself.
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