408 peak RPM range

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Apr 19, 2012 | 07:28 AM

#21

BrianSF-GA

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From: Cartersville, Georgia

Quote:

Originally Posted by Mazzenger

I don't think your FAST 90/90 is holding you back much at all.
I would take beach house over the FAST 102!

By the way my 408ci sees peak HP around 6200-6300 rpm and
sees peak TQ around 4500-5000 rpm.

You are peaking just a few 100 rpm's more than mine. I am pretty happy with the power I have. I just want to be able to put that power down. I know with a stock suspension it will not happen.

I am thinking Street Glide then beach house ... I think she honestly knows that the beach house will come when we retire. Our current home is the investment toward that!

Apr 19, 2012 | 07:41 AM

#22

Blackbird-WS6

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So we all agree???.... Sell the cars and buy a beach house and a 24 pack??

Apr 19, 2012 | 08:01 AM

#23

BrianSF-GA

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From: Cartersville, Georgia

Quote:

Originally Posted by Blackbird-WS6

So we all agree???.... Sell the cars and buy a beach house and a 24 pack??

I would sell everything (well, not the bike ... gotta have some fun) and retire to the beach tomorrow, if I had the cash or retirement to live for the next 25 years ... !

Apr 19, 2012 | 12:20 PM

#24

gectek

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Quote:

Originally Posted by Blackbird-WS6

Thank you sir, I will look into the other springs but from what I'm seeing I should be find

What I meant with the heads is there not ported by tony or anyone else.... Just bc they are cnc doesn't mean they can't be ported

It's making power where i want it, I just wanted to make sure I wasnt having valve float thats all, even if you compare my numbers to the list of other 408s I'm on the higher end, I'm just up and down about the intake

If the 8019s were installed by AFR or Tony, I would assume they were set up to the .050 before coil bind requisite, so you should not have a problem with valve float as they are a VERY good spring. Usually valve float will start all at once and the power just tanks and no amount of tuning will help. If it happened, I am sure you tuner has a bit less hair on their head.

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