the psi's go up with the revs as in : 50psi at 1-2000 rpms, 75psi at 3000rpms, bout 80-85 at 4000. could there be air in the line?? or is this normal when haveing a 274 lift/duration cam??
CK5
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50 psi at idle on rebuilt 350 with high volume pump????
- Thread starter down4thakrown
- Start date
pauly383
Daddy383
I have heard 10 psi for every 1000 rpm is fine . 50 psi at idle sounds good to me . My engine does 50-60 at idle with 140,000 some odd miles on the bottom end . Now , later model trucks have an 80 psi gauge , got one for mine off a later second gen . I haven't changed to the 80 psi sender yet .
With the 60 psi gauge and sender , it did peg it driving .
With the 60 psi gauge and sender , it did peg it driving .
Emmettology 101
3/4 ton status
Not sure what pump is in my 383. But at idle my factory 60psi gauge is pegged.
Emmettology 101 said:
ive got a 1991 caprice police 350 (crappy motor) and it pegs at idle.... 60psi gauge isnt good enough
20-30 at idle is all you need. 35-40 at 2,000 rpm. 60-65 at 6,000rpm.
Anything more than that and you're just increasing pump wear, distributor shaft wear, distributor gear wear, cam gear wear, and increasing parisitic losses.
The pump should've come with a 70psi relief valve in it.
Anything more than that and you're just increasing pump wear, distributor shaft wear, distributor gear wear, cam gear wear, and increasing parisitic losses.
The pump should've come with a 70psi relief valve in it.
Mad-Dog
1/2 ton status
Gee..........i hope you installed a deep-sump pan with that high-volume pump that will suck a 5 qt. pan dry at high rpm's.. 
