Electric to mech fuel pump on a lump
#1
Electric to mech fuel pump on a lump
Hey guys ~ so my fuel pump just died. I have an '82 XJS with a Chevy 305 under the hood. Whoever did the V8 swap left the electric pump in place. I'm just wondering, can I swap in a mechanical pump instead of replacing the electric? Sounds like it would work fine, but I'm not sure if there's any hidden tricks about it...
Thanks in advance!
Thanks in advance!
#2
#3
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Is the 305 carburetted or fuel injected?
A carb'd engine needs only 4-5 psi so an old style engine mounted mechanical pump is fine. An injected egnine needs much more, depending on the type of injection. I think the old throttle body injected V8s need about 15-20 psi and the tuned port injection models more like 50-60 psi.....just guesses on my part. It's been years since I messed around with 'em.
Cheers
DD
A carb'd engine needs only 4-5 psi so an old style engine mounted mechanical pump is fine. An injected egnine needs much more, depending on the type of injection. I think the old throttle body injected V8s need about 15-20 psi and the tuned port injection models more like 50-60 psi.....just guesses on my part. It's been years since I messed around with 'em.
Cheers
DD
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