Thread: Building a Time Bomb...

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well, dosn't a 305 have 9.5:1 comp? if so, only 4 PSI is safe on a good running engine, the least that a 144 will put out is 5-7, and because the 305 heads are low flowing, might be more like 7.

Wont be my first blown motor. My 68 is the same thing with a 350/144 Blower. I got a few sets of 350 heads in the garage, I know I have one set of 1.94, but I dont remember the casting. Thinking 881 or 883. They were rebuilt not long ago. Worst comes to worst I destroy a 305.

A blown 305 would be a great way to use up some of those smog low comp 350 heads we all have lying about. And as you say, if it scatters, what's one 305 more or less? You'd be doing the world a favor, and have a ball doing it! (Just pray none of the schrapnel comes up and wipes out the blower!)

C-mon now ease up on the 305,they will beat alot of over cammed and over intaked 350s.The 305 if fine for what it is,after all if were lookin for track power the 350 aint that big a step up.!!Unless thats a magical 45 cubes

Originally Posted by joe_and_jeep

Wont be my first blown motor. My 68 is the same thing with a 350/144 Blower. I got a few sets of 350 heads in the garage, I know I have one set of 1.94, but I dont remember the casting. Thinking 881 or 883. They were rebuilt not long ago. Worst comes to worst I destroy a 305.

I have used a few of those heads on my blown motors in the good old days. Nothing wrong with them. As long as you dont go mad on the boost pressure and overboost, they are okay. Building up a blown 383 now, and I am using those heads. All I am doing is porting them out myself, to get the airflow up.