LT1-LT4 Modifications 1993-97 Gen II Small Block V8

350 solid roller LT1 dyno numbers

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Old Feb 27, 2012 | 03:52 PM
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Default 350 solid roller LT1 dyno numbers

A neighbor just bought a '89 IROC-Z with an LT1 350 solid roller transplant. I'm having a difficult time finding solid roller graphs for a 350 LT1, but the new owner was told it puts down 420-430 at the rear wheels. I know dyno's are tuning tools, but does that seem reasonable given the vague description of the motor?
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Old Feb 27, 2012 | 04:00 PM
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Guys get those numbers from hydraulic cams and ported stock heads so I don't see why it would be hard with a solid roller and decent heads.
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Old Feb 28, 2012 | 08:08 AM
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Originally Posted by JimMueller
A neighbor just bought a '89 IROC-Z with an LT1 350 solid roller transplant. I'm having a difficult time finding solid roller graphs for a 350 LT1, but the new owner was told it puts down 420-430 at the rear wheels. I know dyno's are tuning tools, but does that seem reasonable given the vague description of the motor?
At what RPM? I'd be more interested in seeing the curve than looking at peak numbers.
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Old Feb 28, 2012 | 08:59 AM
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I don't think he has a graph, just word of mouth. Maybe we can visit a local dyno to get some numbers.
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Old Feb 28, 2012 | 02:47 PM
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Looking to do 400+ WHP out of a 357 with a TH400... hydraulic roller cam and still build vacuum.
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