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370 turbo question

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Old May 8, 2017 | 10:26 PM
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Default 370 turbo question

I ordered all my forged rods and pistons to rebuild my ls1 but machine work seems to be on the expensive side out here in California. With that said it looks like I could get a complete 370 short block from a supporting vendor for around 5-700 more then building my ls1. My question is will my 70mm .96 ar turbo be too small for a 370? I currently have a speed inc Tu1 turbo cam and stock 241 heads with upgraded springs and retainers. Let me know your thoughts. Thanks
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Old May 9, 2017 | 11:24 AM
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I had a TU1 with a TC78 on my stock 6.0 and it ran out of steam pretty quick.
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Old May 9, 2017 | 11:33 AM
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Originally Posted by 70c10
I ordered all my forged rods and pistons to rebuild my ls1 but machine work seems to be on the expensive side out here in California. With that said it looks like I could get a complete 370 short block from a supporting vendor for around 5-700 more then building my ls1. My question is will my 70mm .96 ar turbo be too small for a 370? I currently have a speed inc Tu1 turbo cam and stock 241 heads with upgraded springs and retainers. Let me know your thoughts. Thanks
in my opinion, yes.... that turbo is small for that motor. The Tu1 is a good cam, and it won't be what makes your motor run out of steam quick..... but that turbo will.
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