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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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#38301 11/16/2004 12:25 AM | Joined: Jul 2003 Posts: 31 Junior Member | | Junior Member Joined: Jul 2003 Posts: 31 | I have a 327 small block chevy (about 300hp) in my 53 3100. The fuel pump installed by the PO was leaking,so I dedided to install a new one. I intstalled a Mallory high performance fuel pump rated at 70 ghp at 6-8 psi. Now when I start up the engine it shudders like crazy, but then smooths out. When I put it in a foward gear it starts shuddering again and just won't go.
Any body have any ideas, what the problem may be?? Is it possible that the fuel pump that I installed is to much for my engine??
Thanks,
Wayne C. | | |
#38302 11/18/2004 1:11 AM | Joined: Jul 2003 Posts: 55 Member | | Member Joined: Jul 2003 Posts: 55 | What type of carb are you using? I know Edelbrock has a spec for their carbs (5-6 psi I think). It wouldn't hurt to get a guage and check your fuel pressure. Good luck. John
1968 Chevy C-10, 250 and 3 speed on floor, Hedman headers, Offy intake, Edelbrock 600cfm 4 barrel, HEI
1966 Chevy C-10, motor and tranny went into the '68. Waiting to be restored.
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#38303 11/18/2004 7:19 PM | Joined: Jun 2000 Posts: 2,773 'Bolter | | 'Bolter Joined: Jun 2000 Posts: 2,773 | Sounds like you need a pressure regulator.
Fred
52 3600
69 C-10
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