Biggest 5.3 out there.....
#12
Tin Foil Hat Wearin' Fool
iTrader: (36)
Good luck with that oil burner, piston rocking ****. I have a 4.100 in my 418 and it eats piston skirts and the wrist pin is so far up into the oil ring and I will be happy if it only drinks 2quarts every 3K which I doubt it will be that little. You also have to remember with a long stroke engine harmonics are going to be worse and you will not be able to spin it really high and it have any longevity to it since the iron blocks(6.0s inlcuded) have a short bore, the piston skirts come WAY out of the bottom causing the pistons to rock alot and eat skirts. There is a reason no one builds a 394(3.901x4.125) or 392s(3.901x4.100). Do what you want it seems you are set on building an odd setup but as Im sure you know 99% or the "odd-ball" setups are oddball because they dont work as well as something comparable. Use my info for what you want but I have been there done that and would definately go with a 4" stroke or a stock stroke bigger bore and spin it to the moon if I did it over again. With that said I love the off-idle tq my motor had even with the 237/242 112 cam I had in it.
#14
Tin Foil Hat Wearin' Fool
iTrader: (36)
Originally Posted by 03sierraslt
Wasnt there some issues with the 4.125 cranks hitting in places? I was thinking 01slowz71 had a few issues with his 4.1 as far as clearance but could be wrong. When you ask what is the longest stroke you can use do you mean use with no modifications or just what is the absolute longest stroke period even with modifying the block, windage tray, piston skirts etc?
#15
Admin
iTrader: (22)
Originally Posted by 1slow01Z71
I had a **** load of clearance issues with my 4.100 stroke crank when using a 6.125 rod, now with a 6.200 rod it would have been easier but that would shove the wrist pin even further up in the oil ring. In order for my 4.100 stroke to fit in my 6.0 block it took spacing the windage tray out about half an inch, cutting and modifying the pickup tube, grinding on the crank counterweights and rebalance, grinding on the wrist pin bosses, grinding/cutting on the pistons skirts, back-cutting the skirts, filing and smoothing those backcuts to blend in the with the wrist pin boss and LOTS and LOTS of measuring with feeler gauges to make sure I had the right clearances. Thus I say 4" stroke, not worth the extra hassle. FYI stock LS1 over-bore is 3.901 for when you are looking for pistons I suggest talking to Richard at WCCH he can get you some nice pistons and rods for a good price along with anything else you might need, he has been a world of help to me in my builds.
I thought you had a bunch of issues.
#18
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Originally Posted by 1slow01Z71
Good luck with that oil burner, piston rocking ****. I have a 4.100 in my 418 and it eats piston skirts and the wrist pin is so far up into the oil ring and I will be happy if it only drinks 2quarts every 3K which I doubt it will be that little. You also have to remember with a long stroke engine harmonics are going to be worse and you will not be able to spin it really high and it have any longevity to it since the iron blocks(6.0s inlcuded) have a short bore, the piston skirts come WAY out of the bottom causing the pistons to rock alot and eat skirts. There is a reason no one builds a 394(3.901x4.125) or 392s(3.901x4.100). Do what you want it seems you are set on building an odd setup but as Im sure you know 99% or the "odd-ball" setups are oddball because they dont work as well as something comparable. Use my info for what you want but I have been there done that and would definately go with a 4" stroke or a stock stroke bigger bore and spin it to the moon if I did it over again. With that said I love the off-idle tq my motor had even with the 237/242 112 cam I had in it.
Thanks for the info. The motor will be in a weekend/nice weather car,not a daily driver. Not spinning it too the moon either, @ 5500-5800 it will be done.
#19
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Originally Posted by SnakeOiler
Once you increase the bore or the stroke, it's no longer a 5.3L - I think this is a trick question
The biggest 5.3 is a 5.3
The biggest 5.3 is a 5.3
Thanks for the tip, as I thought adding cubic inches kept the Liters the same
#20
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With a 4.00" stroke and MAX bore to stock 5.7 pistons would get you 382cid. Could be fun popping the hood to show people your "cam only" 5.3L. Not many people would suspect a stroker out of a 5.3L because it is so "oddball".
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