I'm currently building a street-only 360 and shooting for low rpm torque / high efficiency engine.
Would like to hear thoughts about the high dynamic compression ratio, cam choice and octane on this 'low rpm' engine.
Am I good to go, or pushing the limits too much with the cam?
Engine specs- 360ci +0.030"
- Stock, but balanced, rotating assembly except for .030" KB 0-deck pistons.
- Iron heads, '302' casting (closed chamber). 60cc polished chambers and valves
- Edelbrock aluminium Performer intake, w/ blocked heatriser ports.
- Shooting for a very tight quench-clearance of around 0.025-0.030".
- Average rpm-usage: 600-2500rpm. Max. rpm around 5000 rpm.
- Fuel is Propane/LPG (±104 octane)
- Cam is CompCams XE256H, used with 1.6 ratio rockers
- Will also run a 160 thermostat and fab a cool-air intake system.
- Car is '73 Dodge Dart, A518 OD trans, 3.55 rearaxle.
All pistons are .015"
below above deck on 1 side of the block and 0.010" below on the other side. I will equalize this with use of .028" and .039" headgaskets and a slight mill on 1 head.
- Calculated Scr is 11.6:1 / Dynamic cr is 9.96:1
Cam card
Screen pic of calculated Dcr below, taken from:
https://www.uempistons.com/index.php?main_page=calculators&type=comp
