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Old 10-11-2015, 11:44 AM   #36
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Originally Posted by smurf stang View Post
So olerodder you dyno'ed you car and it laid down 686 but you yanked the motor and on the stand it only put out 658? Never seen that before unless there was a problem somewhere along the lines.


I know numbers can be flubbed but that is a huge difference.
Sorry, I've been out of town.
When I did the refresh on my 408 we put it on Dinan Motor Sports of Morgan Hill engine dyno for break-in and tuning we got 642hp@6800rpm and 544lbft@5700rpm. Also wanted to see where max torque was so Mike @ Mike's Transmission of Lancaster, CA could put a loose converter together for me. We did 12 pulls and the last one was 658hp@6800 and 550@5800rpm. After I got the motor in the car I went to the oldest hot rod shop in Northern California...can't remember the name as they've gone out of business and put it on their chassis dyno....they got 686hp the first pull...I told them to stop as their dyno couldn't be correct...anyway I left. I also went to another shop in Northern Cal where it produced 668hp at the rear wheels....I just figured that guy didn't know his head from a hole in the ground.
Chassis dyno's are not accurate at all...IMHO
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Old 10-11-2015, 11:47 AM   #37
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Originally Posted by straybullitt View Post
I don't think that the engine I'm referring to has ever been on an engine dyno. And I never saw a chassis dyno sheet. I have no reason to disbelieve the owner. The car is a single turbo Fox, and it was promptly kicked out of Sacramento Raceway, after it's first pass, for no roll bar. If I remember correctly, it was in the high 10's! Lol.
Sorry...I'm not a turbo or blower guy and for me the true test of making HP is with a Carb...I just assumed you friend wasn't using any power adders and was N/A.
Your friends Fox Body isn't white is it???
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Old 10-11-2015, 01:44 PM   #38
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Originally Posted by olerodder View Post
Sorry...I'm not a turbo or blower guy and for me the true test of making HP is with a Carb...I just assumed you friend wasn't using any power adders and was N/A.
Your friends Fox Body isn't white is it???
I believe that it is. The car was primered black but he mentioned that he thought that it was drawing unneeded attention from the local constabulary, so I'm pretty sure that it is painted, mostly, white currently.
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