Mopar R3 Block

Ironracer said

Looks like the 59° has a Severe angle.. that's the Race Only unit, I assume? Hope I'm not clouding Your thread, learning here...

Click to expand...

No the 59 is the factory angle required to use most heads the way I understand it. The 48' is the corrected geometry race version that requires specific heads...the way I understand it. lol