|09-20-2012 11:21 AM|
Well they work fine, most 305 heads don't let you rev past 5k , and I easily rev my engine to 5500rpm, it seems to want to rev higher but I never take it above that
|09-19-2012 11:26 PM|
|06-12-2012 12:28 PM|
i just bought a pair of 305 heads casting number 601 that had been ported, fitted with 202 160 stainless steel valves, new seals, and new 500 lift springs for 380 a pair
combustion chamber size is 58cc and i'm very pleased, a lot better than my 76cc smoggers
|06-12-2012 12:19 PM|
|ryan v||What are a set of 186's worth i'm pretty sure they aren't cracked but they do need new valves? I'm not really wanting to get vortec heads because i'd have to get a new intake. I'm on a real tight budget so im trying to save as much money as possible.|
|06-11-2012 05:39 PM|
|F-BIRD'88||If the 186's are not cracked or screwed up, sell them and buy some vortecs. (new)|
|06-10-2012 10:35 PM|
|ryan v||so i'd probly be better off stickin with the 993's and just runnin flat top pistons? i don't really wanna dump a bunch of money into 305 heads when i got a set of 186's that need redone. It sucks being broke. lol|
|06-10-2012 08:40 PM|
The 434 305 heads have small valves and crappy ports. The chambers are around 60cc. Don;t expect much power in stock form. The cr will be higher than with the 993 heads. Use premium gas.
The best 305 heads to use on a 350 are the 4416 or the 601 castings.
best with full home porting and 1.94x 1.60 valves.
|06-10-2012 07:17 PM|
305 heads or 350 heads on sbc 355
i'm looking into rebuilding the 355 in my 87 chevy truck. It currently has a set of 993 heads on but i got my hands on a set of 354434 heads off of a 305 that came out of a 77 chevy monza. The truck wont be used on the road its set up for a mud truck. i won't be doing anything to the heads other than putting heavier valve springs on so i can run a bigger cam. Which would be the best choice to use?