Engine Tech
#1
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Join Date: Nov 2009
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Engine Tech
Say fellow gear heads i have a problem with my BBC. Rebuilt the 750 holley and the distributor back and forth with plugs, R44, #5, i cannot get past 5400RPM without the engine acting like it has a rev limiter on it. Took it to a mechanic friend and he seems to think it is valve spring failure.
What do you think? Motor specs below.
396 + .030=402cid
540 lift hydraulic cam
10 to 1 compression (.250 dome pistons)
Edelbrock Aluminum Heads
Performer RPM RECT.PORT
EdelbrockAir Gap Intake
Mucie 4 speed
What do you think? Motor specs below.
396 + .030=402cid
540 lift hydraulic cam
10 to 1 compression (.250 dome pistons)
Edelbrock Aluminum Heads
Performer RPM RECT.PORT
EdelbrockAir Gap Intake
Mucie 4 speed
#5
Is it a 4 - 7 swap cam? ( I'm not sure if hyd cam 4-7 swaps are avail ops
This may sound stupid, but do you have a chip or some other kind of rev limiter on it? Chips do go bad. If you do have a chip change it or if it's a dial make sure it is well above 5,400. I run my limiter at 8,500 eventhough I only turn 7,800 to 8,000.
It also could be in the distributor. Are you sure the rotor is phased correctly and it's not cross firing?
This may sound stupid, but do you have a chip or some other kind of rev limiter on it? Chips do go bad. If you do have a chip change it or if it's a dial make sure it is well above 5,400. I run my limiter at 8,500 eventhough I only turn 7,800 to 8,000.
It also could be in the distributor. Are you sure the rotor is phased correctly and it's not cross firing?