Check out my car and talk to me about 318/340 swap
Now that I am done at work today and have time to reply, heres for all you smart guys on here talking about running 360 heads on a teener. That performance gain is all in your mind. Heres 3 models for you to look at. Standard bore 318, stock rod ratio, pistons TDC .080" in the hole, and I will give it 5cc valve reliefs from a quickee rebuild. .038" compressed height felpro permatorque headgasket with a 4.03" diameter. Real common autopart store stuff. And the 72CC 360 heads. The first model shows 7.46-1 compression with them 72cc 360 heads on a stock 318 with stock pistons. Hardly an effing hot rod
Second model I changed nothing on the equation but stuck 60cc heads on it. CR jumps to 8.34-1. Better yes, but about a stock 318 running on rat piss.
The 3rd and final model I changed the heads to 62cc, and put the piston at near zero deck height with 5cc valve reliefs. This is typical of the KB167, and some decking. That shows 9.66-1 compression. A nice pump gas hot 318.
In closing are ya gonna get there with a low compression 318 short block and 360 heads. Hardly. You may get closer with zero deck flat tops and them 360 heads, but not on a stock low compression 318 your not. The numbers dont lie
Now that I am done at work today and have time to reply, heres for all you smart guys on here talking about running 360 heads on a teener. That performance gain is all in your mind. Heres 3 models for you to look at. Standard bore 318, stock rod ratio, pistons TDC .080" in the hole, and I will give it 5cc valve reliefs from a quickee rebuild. .038" compressed height felpro permatorque headgasket with a 4.03" diameter. Real common autopart store stuff. And the 72CC 360 heads. The first model shows 7.46-1 compression with them 72cc 360 heads on a stock 318 with stock pistons. Hardly an effing hot rod
Second model I changed nothing on the equation but stuck 60cc heads on it. CR jumps to 8.34-1. Better yes, but about a stock 318 running on rat piss.
The 3rd and final model I changed the heads to 62cc, and put the piston at near zero deck height with 5cc valve reliefs. This is typical of the KB167, and some decking. That shows 9.66-1 compression. A nice pump gas hot 318.
In closing are ya gonna get there with a low compression 318 short block and 360 heads. Hardly. You may get closer with zero deck flat tops and them 360 heads, but not on a stock low compression 318 your not. The numbers dont lie
