If that car put down 545 as claimed, you'd hit 600 on that dyno.

Sold! Maybe the new owner will join up and end the mystery of "Just how much HP does it have".....:tup:

Mystery solved
 

I am finally purchasing my dream car after 4 years of being a broke medical resident. Also, I have spoken AT LENGTH with the previous owner who built the car and have all invoices for build which was done less than 1 year ago, as well as multiple dyno results before/during build. Car is putting down 490rwhp. Also, just want to say thank you for all the info on this forum as well as the community which I have enjoyed trolling for the last 3 years. It gave me all the info to know what questions to ask about the z34. I will be test driving car on Tues, and assuming I am satisfied filling out paperwork that day. I can't wait to let you know for sure and post pics!

Also.....
 

Garaged at all times, babied by previous owner, weekend driver only. Clean CarFax. Previous owner had to sell due to change in lifestyle (baby!). Super nice guy who is also giving me Nismo car cover.

A question, if you can scan the dyno graph and post it up that shows the 490whp number. :tup:

On a moderately high reading dyno, 490 sounds perfectly reasonable, and in line with what others have made. Kinda funny the difference between what the guy who built the car says and the dealer trying to sell the car. I'd still go get a compression and leakdown test and do an oil analysis, no matter how cool the previous owner was. If I had a motor on the way out, I'd be tempted to trade it in and claim I was getting rid of it because of an incoming baby also.