Quote: Its not a low compression engine. Its 11.26 to 1. The compression test was done with 5 hits on the gauge, all plugs removed. From the day this motor was built, it never had any vacuum at idle, and always ran like a rat.
Not that its going to solve all of your problem but; How do you know your compression is 11.26:1?
I just did a quick calculation assuming flat top pistons at zero deck that have 5cc reliefs. A typical 0.039" thick compressed head gasket with a 4.150 bore and the edelbrock 65cc heads.
This claculates to 10.5:1. Did you cc the heads? they could be bigger and where are the pistons in relation to the deck? If the heads have bigger than advertised chambers or the pistons are below the deck you could very easily be down in the 9's on compression. To get the advertised compression of almost all pistons on the market for a 360 will require the deck of the block to be machined quite a bit.
Dave Clement
Pembroke, MA
03 PT Cruiser GT Turbo
99 Dakota SLT+ CC 4x4
68 Barracuda sport coupe
http://home.comcast.net/~dgc333/
