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Old 12-12-2011, 03:16 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, 03:37 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, 03:41 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, 03:41 PM   #4
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Originally Posted by 94cobra69ss396 View Post
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, 03:51 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, 03:56 PM   #6
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Quote:
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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, 04:00 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, 04:01 PM   #8
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Quote:
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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, 04:48 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, 04:57 PM   #10
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Quote:
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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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