426 Hemi fuel pump applications, real world

[hemi68charger]

Hey gang..
It was brought to my attention the difference in pressure between the Carter pump M4862 (8_to_9.5_psi) and the polished M5903P (6_to_7.5_psi). The 4862 looks more like the OEM unit. Now, are there any hemi owners out there now running the OEM-lookin' 4862 pumps on there factory cars without problems? Or, did you have to install a regulator?

Thanks..
Troy

4826 (8_to_9.5_psi)


5903P (6_to_7.5_psi)
 

[472 R/T SE]

I think mine's a 4862 and my only problems are the carbs could use some dialing.  No problems at all.

Ooops you said factory cars. 

[hemi68charger]

I think mine's a 4862 and my only problems are the carbs could use some dialing.  No problems at all.

Ooops you said factory cars. 

Mike..
Thanks.. The spirit of the question you hit dead-on.. I was looking for "stock" hemi applications.. If it works for your Charger, I shouldn't have any problems then....     

Troy

[472 R/T SE]

I was trying to beat someone else to the punch.

Tim Banning mentioned a regulator cause the 650's supposedly don't like too much pressure IIRC.

Even though mine's considered a tribute car, I've tried to keep it stock appearing nixing any regulator idea.

[firefighter3931]

The 8 psi pump is too much for a carburated application....definately needs a regulator. The Carter "race" pump has been known to exceed 10psi. I've run many 6psi 120gph Carter street pumps with excellent results. 


Ron