Thread: compression ratio
Hybrid View
-
07-06-2006 12:37 PM #1
compression ratio
i put a 78 440 in my 88 ram and am a little dissapointed the engine is rebuilt as the 78 2 years ago i want to hop this engine up and need some sugestions,
first the manual says the motor has 8.2 compression ratio and a small 4.25 lift cam, and a cast crank and new pistons (bored .040), i think the heads are 88cc
edelbrock has the aluminum performer heads in 84cc, does anyone know what this will do to my compression ratio, i want to put a 4.80 lift cam in it but the compression ratio right now wont let me
if i can get a good head and cam package and have my motor hold up for about 3years i want to eventually tear it back down and put the 496 stroker kit in it and re use the heads and cam if i get new ones
-
07-06-2006 09:07 PM #2
I get about a .5 point increase in your compression ratio when adding 0.040 to the bore and subtracting 4cc away from the chamber
Also - I had to goto 22cc dish pistons to get your original compression ratio.
I may be missing something - you may want to try and put more exact numbers in for the gasket+deck and head gasket thickness
http://www.virtualengine2000.com/FreeCalculator.htm
I got the Skyjacker hydro shocks on and they are as soft as I'm going to get. It still rides kind of firm but better. One of the main issues is the front is about a 1/4 off it's bump stop, the lack...
Stude M5 build