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261 head on a 235

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06-30-2016, 07:14 PM	#1
jeffbcn Registered User Join Date: Nov 2015 Location: Las Vegas Nevada Posts: 84	261 head on a 235 I have a 235 built in 62 with a 261 head from 55 to 57. Compression test 150 in all six. Standard one barrel Rochester with stock intake and exhaust. Dragonfire electronic ignition, plugs gapped at .050. What kind or horsepower would you guess in a 47 Thriftmaster?

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