3 window

iTrader: (1)

To anyone out there, what are your results? I️ see around 165 psi, throttle open with a good charge on the battery. The cam was degreed when installed and put in at 108 centerline. I’m used to seeing 185 psi+ so this just seems low to me. My 5.3 is roughly 9.5:1 also. Let me know.

JoeNova

I had roughly 195 psi with same cam in my 5.3, but I have flat tops.

3 window

iTrader: (1)

can’t see a small dish losing 30 psi

Ratical

iTrader: (82)

Do a leakdown or squirt a small amount of oil in the cylinder first and see if it goes up substantially. Are all the cylinders fairly equal?

Ratical

iTrader: (82)

Does it have the original heads on it?

3 window

iTrader: (1)

All cylinders are equal essentially. It’s got 243s on it. Leak down is tight. Less than 3%

Turbo D

iTrader: (3)

Cam timing could be out, did you do it dot to dot?

3 window

iTrader: (1)

Negative. I degreed it to 108 Icl as per the grinder.

JoeNova

dished pistons and 243s puts your compression around 9:1. That's almost a full point less than mine. I would say 165 is a bit on the low side but not by much.

Ratical

iTrader: (82)

Sounds like everything is healthy, just maybe lower static compression than you figured. Have the heads or block been decked? My CC is 150psi with my 6.0, 226/231 cam on a 115 sep. and -18cc dish and 70cc heads. Sounds like you verified everything you should. Run it!

3 window

iTrader: (1)

Sounds like all is right in line with others. Good enough. Thanks guys.

01ssreda4

iTrader: (96)

Strange situation, I run a small battery (like lawn mower sized) and it did not like cranking my 11.1 LS1 over. When i swapped to a 243 headed L33 with an isky turbo grind, it spins it over like its on speed or something. After posing the question to a few, maybe its the turbo cams events that help the engine light off easier? I dunno.