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Old 02-20-2008, 04:57 PM   #1
66blownmustang66
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Default help?

im rebuilding a 93 5.0 (302), im going to use the stock crank, i want to buy forged pistons, i was wondering what you people think stock 302 rods can handle?? because forged h beam rods are a little out of my budget right now.. i got afr 185 heads on order.. any other suggestions...
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Old 02-20-2008, 06:51 PM   #2
mustanglover66
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Default RE: help?

What kind of power and rpms are you planing to run that will help figure out if the stock I beams can handle it. I'm not sure about stock but aftermarket I beam can handle up to around 450 hp.
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Old 02-20-2008, 09:29 PM   #3
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Default RE: help?

Shouldn'tbe an issue as long as the rods are shot peened for stress relief and upgrade the bolts. H-beam rods in a stock block is like killing a mosquito with a shot gun. Keep the rotating assembly light and balanced.
If you run boost, keep it realistic. 6-8psi with a 9:1 compression ratio. Should be a good durable engine.
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Old 02-20-2008, 09:41 PM   #4
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Default RE: help?

+1 I have read that the stock rods are pretty good when the rod bolts are upgraded.
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Old 02-20-2008, 09:56 PM   #5
Aussie66Fastback
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Default RE: help?

hey scott...explain shot peened rods???
apparently mine were done...sounds cool. never understood what it meant tho
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Old 02-20-2008, 10:43 PM   #6
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Default RE: help?

Basically you stick the rods in a rotating cylinder full of steel shot. As the shot pounds the exterior of the metal it relieves the stress in the grain structure, increasing the strength of the metal. The detailed explanation is kinda complicated metallurgical speak, but that's the general idea
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Old 02-21-2008, 12:16 AM   #7
67mustang302
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Default RE: help?

You can get decent 4340 forged I beams that'll take more than the block will for like $200-300. I'd do that just to go with a floating pin setup, I dunno if I'd want to put boost on a non floating pin if you're gonna be pushing the limits of the block, but that's just me. Find out what it costs to get your rods improved, then go with what costs less.
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