Re: [BaadAssGremlins] 5/16 feeding 400hp

[Rick Griffin <amc_poppy@xxxxxxxxx>]

Try a little more timing say 36-38 total if it will start Ok. Cam should be good for 6200-6500 rpms easy.How about valves ? Are they too tight? I take all the slack out and then a quarter turn more [0 lash] What kind of fuel pressure do you have at the carb? It says 5/16 in and 3/8 out could cause some pressure drop.I think AMCs like a lot of fuel. We are using a 1050 on a 370 and it has not hurt it.Picked up a tenth..Other than advancing or retarding the cam I am out of guesses. Rick

--- On Tue, 8/18/09, z_man401 <z_man401@xxxxxxxxx> wrote:

From: z_man401 <z_man401@xxxxxxxxx>
Subject: [BaadAssGremlins] 5/16 feeding 400hp
To: BaadAssGremlins@xxxxxxxxxxxxxxx
Date: Tuesday, August 18, 2009, 6:29 PM

 

I am having issues with my 401. Under load my car does not like to rev past 4000 rpm. My timing is 34 or 33 degrees advanced at 2500 rpm,
I have tried both an Edelbrock 800 cfm and Holley 770 Avenger and no difference.. I have the Duraspark ignition.. I will be upgrading to TFI as we speak.. I have a brand new Edelbrock RPM fuel pump(which made no difference..

I was talking to guys at the local speed shop shop and they said 5/16 line is the problem. I have heard 5 /16 will support 500 hp.

anyway I know at most i might have 420 hp.

My specs

401 bore .040
forged 10:5 to 1 pistons
edelbrock RPM heads/intake
Comp Cam 236-246 @ .050 520 int 538 ex
edelbrock shorty headers
Edelbrock RPM PUMP 5/16 in and 3/8 out

I looked at one of my plugs (i dont feel like taking headers off yet)
and it shows perfect light brown color...

Any suggestions?

Rob

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