I am working on picking up Andys(340_Dart ) engine program.
I thought for the parts the car did not run the number like it should so I just wanted to give everything the once over. I found lots of little things wrong and I hope fixing them will get his car running much better.
The big thing is the cam was off for what the engine CR was.(CR was thought to be 10.9to1) and it was only 10.25to1 not allot but cam was ground for more squeeze. This was due to the chamber size CR was set with the thought the chamber was 68cc I checked one and it was 73.5cc.
I found the springs were set .250" from coil bind Andy was only turning this 6850rpm and the valve locks are beat up bad with only 50 1/4mi runs. The springs should be set max .070" from coil bind this should help settle valve-train down.
The next thing I would like to fix is it only has 5/16 push-rods like to get min. of a 3/8 push-rod in this deal.
I am converting the intake from 4150 to 4500 top I think this will help a bunch and the heads will get update valve job the min throat diameter was at about 85.5% I am going to set this to 90% and open up the sort turn.
Well here are some pics for you Andy.
Brett Miller BH performance
717-512-0783