(i hope this doesnt post twice)
I have tried a Holly 770 STreet Avenger and Edlebrock 800 EPS? No difference.. Still under load around 4000 RPM it just doesnt rev.
It doesnt pop,bog,miss. . it just doesnt go. I have had several issues with fuel delivery before in my FSJ Cherokee and it doesnt seam the same.. It just seams like under load it flakes out above 4000 RPM. According to Crane Cams my RPM RAnge is 3100-5900 RPM.
I have gotten the car up to 4400 RPM gradually even 5000 it doesnt seam to run out of gas even if i sustain the speed.. MY Cherokee would run outta gas above 65-70 MPH when the pump was bad. My gremmy doesnt seam top have that problem.. Anyway if i can get it to start again. I will adjust the valves... If that doesnt work i am done..
I will just drive it nicely for two more months then store it for 5 more years.
MY ignition issue,,, my green wire that went to positive side of coil( yes there is also a green
wire to negative side) has 12v with ignition on not running. I am thinking it should be like 9v instead..
My car has a bunch of electrical Gremlins that are on the loose..
Anyway I am going to look at my wiring diagram from my 78 Cherokee and look at my WD from my 77 and compare... I will be taking the TFI coil out and go back to what i had since i didnt have any luck with it...
Thank ALot
Rob Z
--- In
BaadAssGremlins@ yahoogroups. com, Patrick Dubois <patrick_dubois@ ...> wrote:
>
> Are those carbs vacuum secondary or mechanical ?
>
>
>
> Does your timing go any higher than the 33-34 @ 2500? What is it @ 4000?
>
>
>
> Reading plugs is a bit more complex than just looking at the color. In
order
> for this to be efficient, you need new plugs, make a pass on the track, shut
> it off (do not re-start) and read the plugs then. Idle time will jeopardize
> the read. Don't do too many changes at once or you'll be chasing your tale
> since you won't know what change impacted the car (positively or
> negatively).
>
>
>
> Start with the line, it's in my opinion an easy fix + you'll end up having
> to do it regardless. Make sure the in-tank pickup can supply the bigger line
> too, otherwise the exercise if pointless.
>
>
>
> _____
>
> From:
BaadAssGremlins@ yahoogroups. com> [mailto:
BaadAssGremlins@ yahoogroups. com] On Behalf Of z_man401
> Sent: 18 août 2009 18:30
> To:
BaadAssGremlins@ yahoogroups. com> Subject: [BaadAssGremlins] 5/16 feeding 400hp
>
>
>
>
>
> 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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