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2011-2014 Mustangs
Engine/Tuning
Rebuild or replace? Built short block on the chopping block?
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<blockquote data-quote="clinton2003" data-source="post: 15996078" data-attributes="member: 144769"><p>well, your going to need a lot of work to make the flat plane crank to work... we are talking a gt350 computer (or probably aftermarket), gt350 cams, timing components. at that point, you probably should just get gt350 heads as then you wont have to do all the machine work to make the cams/followers fit your heads....</p><p></p><p>thats just off the top of my head....</p><p></p><p>If you want to go full tilt na, you want a good set of rods, i beams arent a bad idea, since it sounds like you want to spin some high RPM.</p><p></p><p>how much was block bored? .005? if so you cant bore it out again (or shouldnt anyway) as the stock sleeve is really thin. </p><p></p><p>If your block already needs a rebuild, may as well use that stuff, i'd recommend the manly "lightweight" I beams. they weight the same as the H beams but are much stronger and you wont have too much of an rpm limit (maybe 10k?) </p><p></p><p>i'd also recommend sleeving your block. doing so will make sure you dont have any sort of strength issues. At that point you can decide to punch the sleeves out to 3.700 bore (94mm 5.2 liter) or leave at stock bore 3.630. (92.2mm coyote gen1 & 2) The Gen 3 bore is actually 3.660 inches (93mm). </p><p></p><p>the voodoo motor has a SLIGHTLY longer stroke( 93mm vs 92.7mm) and 12:1 compresstion. but have issues with oiling etc... </p><p></p><p>if your running e85 or race gas, id toss 14:1 compress pistons in there without thinking about it... IF you ever plan on doing boost <u>OR</u> want to run regular 91/93 octane you may think of staying around 12. if not, shoot for the moon.</p><p></p><p>If i were you, i'd go get my block sleeved. Punch it out to 3.66, get a custom set of pistons for 14 or 15:1 compression. Manley or equivalent I beams for strength, toss your heads on and make some awesome power. Your going to want to get a set of cams/springs for this as well to help get the most air in/out as you possibly can. Also you should look at possibly an 18 intake, from what i have seen, a ported 18 intake is as good as a cobra jet intake, for MUCH less money, but i bet cobra jet will be better after 8000 rpm. Your also going to probably want to do some sort of aftermarket computer. that way you can get the RPM's you want. It's a good bit of money but </p><p></p><p>You're looking at 2500 for sleeves, 1000-1300 for pistons/rings, 1500 for rods, 300 for bearings, 1000ish for machine work assembly of short block, so about $6600 JUST in parts/motor work. If your short block is good, you may be able to sell that for 3-3500, and find a f150 or mustang block to sleeve. May be able to hit up Sai Li for a ready to go sleeved block, but probably in stock bore. </p><p></p><p></p><p></p><p>the reason people do boost, is its actually cheaper to get power out of... most of the time anyway. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /> Good luck, i hope to see your car turn into an NA monster... not may of them around. </p><p></p><p>PS. sorry for the bouncing back and fourth randomness. Welcome to my brain.. haha</p></blockquote><p></p>
[QUOTE="clinton2003, post: 15996078, member: 144769"] well, your going to need a lot of work to make the flat plane crank to work... we are talking a gt350 computer (or probably aftermarket), gt350 cams, timing components. at that point, you probably should just get gt350 heads as then you wont have to do all the machine work to make the cams/followers fit your heads.... thats just off the top of my head.... If you want to go full tilt na, you want a good set of rods, i beams arent a bad idea, since it sounds like you want to spin some high RPM. how much was block bored? .005? if so you cant bore it out again (or shouldnt anyway) as the stock sleeve is really thin. If your block already needs a rebuild, may as well use that stuff, i'd recommend the manly "lightweight" I beams. they weight the same as the H beams but are much stronger and you wont have too much of an rpm limit (maybe 10k?) i'd also recommend sleeving your block. doing so will make sure you dont have any sort of strength issues. At that point you can decide to punch the sleeves out to 3.700 bore (94mm 5.2 liter) or leave at stock bore 3.630. (92.2mm coyote gen1 & 2) The Gen 3 bore is actually 3.660 inches (93mm). the voodoo motor has a SLIGHTLY longer stroke( 93mm vs 92.7mm) and 12:1 compresstion. but have issues with oiling etc... if your running e85 or race gas, id toss 14:1 compress pistons in there without thinking about it... IF you ever plan on doing boost [U]OR[/U] want to run regular 91/93 octane you may think of staying around 12. if not, shoot for the moon. If i were you, i'd go get my block sleeved. Punch it out to 3.66, get a custom set of pistons for 14 or 15:1 compression. Manley or equivalent I beams for strength, toss your heads on and make some awesome power. Your going to want to get a set of cams/springs for this as well to help get the most air in/out as you possibly can. Also you should look at possibly an 18 intake, from what i have seen, a ported 18 intake is as good as a cobra jet intake, for MUCH less money, but i bet cobra jet will be better after 8000 rpm. Your also going to probably want to do some sort of aftermarket computer. that way you can get the RPM's you want. It's a good bit of money but You're looking at 2500 for sleeves, 1000-1300 for pistons/rings, 1500 for rods, 300 for bearings, 1000ish for machine work assembly of short block, so about $6600 JUST in parts/motor work. If your short block is good, you may be able to sell that for 3-3500, and find a f150 or mustang block to sleeve. May be able to hit up Sai Li for a ready to go sleeved block, but probably in stock bore. the reason people do boost, is its actually cheaper to get power out of... most of the time anyway. :) Good luck, i hope to see your car turn into an NA monster... not may of them around. PS. sorry for the bouncing back and fourth randomness. Welcome to my brain.. haha [/QUOTE]
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Rebuild or replace? Built short block on the chopping block?
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