Forged 347 or 370
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From: Macomb Michigan
Forged 347 or 370 I just ordered a forged 370 from Forced Fed High Performance. Is that a wise choice over a forged 347? If so, why or why not. I ordered it due to the fact that the pricing was the same beween the two. I'd like to go bigger, but due to $$$, this is it.
Thanks for comments, all my mods are in sig and plan on running 12psi.
Thanks for comments, all my mods are in sig and plan on running 12psi.
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It's not so much the minimal difference in cubes but the strength of the block that you are really choosing between. I spoke with a guy up in NY who does much of GMs R&D engine development about the alum 347/iron 366 dilemma. He said he had personally witnessed 3 ls1 blocks fail under moderate boost. He said with any kind of detonation the thin ls1 sleeves will crack and the motor will blow. For sake of keeping my investment running for years to come I went with his advice despite the added weight of the iron block. Look at W2W, when they chose to use the iron block for their record breaking 1600hp car, they probably had a good reason.
Originally Posted by 93formto98T/A
It's not so much the minimal difference in cubes but the strength of the block that you are really choosing between. I spoke with a guy up in NY who does much of GMs R&D engine development about the alum 347/iron 366 dilemma. He said he had personally witnessed 3 ls1 blocks fail under moderate boost. He said with any kind of detonation the thin ls1 sleeves will crack and the motor will blow. For sake of keeping my investment running for years to come I went with his advice despite the added weight of the iron block. Look at W2W, when they chose to use the iron block for their record breaking 1600hp car, they probably had a good reason.
W2W knows what they are doing....