Thread: 83 Z-28 w/ 406 roller hasn't the power it should, please comment?

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gear ratio??? carb jets/metering rods?? timing? curve?

have you checked the plugs????

Do you know the compression ratio???or what pistons were used???Cam specs???and exhaust specs--

I replaced the plugs. The gear ratio is likely stock for an 83 Camaro, definitely highway. If i remember right the 750 performer carb comes stock jetted for fuel efficiency. The timing and curve I am unaware of, as well as the compression ratio. He said that special pistons were not used in the rebuild. He was misleading about the cam, and just said "big cam". The exhaust is longtube hedman headers, hooked to dual exhaus that if I remember right goes into one muffler, and back out the back as dual again. And to be honest, I have no idea what metering rods even are.

I think my next step is probably to call the machine shop he claimed to have the work done at, and see just what they have to say. Being as it is a small town, and this guy owns a business and does regular business with them, hopefully I can get a little bit of info, but if they ONLY machined the block, it's likely they wont know.