IHADAV8.com - Turbo Buick Tech, and Nonsense
Tech Area => General Buick Tech => Topic started by: Scoobum on June 18 2015, 07:59:53 PM
-
How far retarded would a cam have to be before you'd see low compression numbers?
-
It would depend on the cam Brad.
-
It would depend on the cam Brad.
214/214 from TA Performance-Flat tappet. Cam card says it's ground 6 degrees advanced. An Edelbrock adjustable timing chain was used set at zero. Compression clocked in at 150 on all cylinders.
-
When they say it is ground advanced, that is reflected in the cam card numbers and should be installed straight up which should be the case when installed on zero assuming the gears are marked properly during manufacture.
If it's stock block with stock compression, 150 is probably pretty good because the cranking compression drops as we add duration in a general sense. Advancing cam events six degrees should give a bit more cranking compression but it is still affected by the longer duration. No free lunch.
-
Steve...this is the engine that duplicated mine...with the exception of the cam/timing gears...but it ran low 13's. A roller cam is now in it...so I'll never be able to prove what I thot was wrong with it.
-
I had this car at the track...and I was sitting in the passengers seat with the laptop and PL for a pass. I fell asleep waiting for the revs to come up on the tach on the gauge panel on PL.
-
almost has to be the cam/gears...something wrong somewhere