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Old 12-12-2011, 04:16 PM   #1
joedlsjoedls is offline
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Default Look what I just bought for my 347 stroker
This is going in my 68 GT/CS.

What I bought
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HP numbers are good and all, but they are like asking someone how much they can bench. What difference does it make if I can still kick your ass?
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Old 12-12-2011, 04:37 PM   #2
94cobra69ss39694cobra69ss396 is offline
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Sweet. Isn't that what you had on it before with the old 302? How much compression does your 347 have? Are you going to have to drop the compression?
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Old 12-12-2011, 04:41 PM   #3
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Cool! Makes me excited for what the Snake will be like someday.
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Old 12-12-2011, 04:41 PM   #4
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Sweet. Isn't that what you had on it before with the old 302? How much compression does your 347 have? Are you going to have to drop the compression?
I had it on the 302 that is going in RX-Snake, then I had it put it on my 347 stroker. It's 9.7:1 compression. Here's a video when the engine was on an engine dyno.



It made over 550 HP on that engine dyno with 8 PSI of boost. Later I increased the boost to 12 PSI and ran water methanol injection.
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HP numbers are good and all, but they are like asking someone how much they can bench. What difference does it make if I can still kick your ass?
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Old 12-12-2011, 04:51 PM   #5
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That's a lot of compression for a roots. Are you going to run the meth injection again or just keep the boost low?
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Old 12-12-2011, 04:56 PM   #6
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That's a lot of compression for a roots. Are you going to run the meth injection again or just keep the boost low?
My ls2 runs at 10.5:1 with no meth injection
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Old 12-12-2011, 05:00 PM   #7
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That's a lot of compression for a roots. Are you going to run the meth injection again or just keep the boost low?
I'll probably lower the compression to ~9:1. If not I'll start off with low boost. Haven't made up my mind yet. I was going to re-build the 347 with high compression and a big cam, but I decided to just replace the blower. I loved the way that engine ran. Very streetable and pulled like a freight train.
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HP numbers are good and all, but they are like asking someone how much they can bench. What difference does it make if I can still kick your ass?
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Old 12-12-2011, 05:01 PM   #8
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My ls2 runs at 10.5:1 with no meth injection
How much boost?
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HP numbers are good and all, but they are like asking someone how much they can bench. What difference does it make if I can still kick your ass?
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Old 12-12-2011, 05:48 PM   #9
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My ls2 runs at 10.5:1 with no meth injection
You have a much more efficient engine and a heat exchanger and I thought your engine only had 9:1.
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Old 12-12-2011, 05:57 PM   #10
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How much boost?
I'm at 5.5 pounds, I should be good up to 9 before i really need to look meth/ water
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