|
|
|
11-08-2005, 06:35 PM
|
||||||
|
||||||
|
Which Heads to use?
Hi. Ive got a 1985 chevy 305HO. im putting it back together pretty much stock. stock crank & rods, flat top pistons, and a crane compucam 2050 (.454int/480ext lift, 216/228@.50) camshaft. ive got 2 sets of heads. a set of 416 casting 58cc heads, or some 53cc heads of of an '86 305 truck engine. the 58cc heads will put me at about 9.5:1 compression. the 53cc heads should be around 10.7:1. which should i use? i was gonna use the 53cc heads for the added compression, but now i dont know what i should use. i want to be able to run on 91-93 octane. can i do that with the 53cc heads? thanks for any help.
|
|
11-08-2005, 07:01 PM
|
||||||
|
||||||
|
53cc heads? never heard of them .are you sure it;s from a 305 and not a 283 or something,i would use the 305 ho motor heads cause they should have slighty bigger valves
|
|
11-08-2005, 07:06 PM
|
||||||
|
||||||
|
yep. there casting number is 14022601...80-86...267/305......1.72"/1.5" or 1.84"/1.5" valves, 53cc chambers. both sets of heads have 1.84/1.50 valves.
|
|
11-09-2005, 09:45 AM
|
||||||
|
||||||
|
...anyone?
|
|
03-04-2009, 09:06 PM
|
|||||
|
|||||
|
use the 58cc heads. you don't want 10.7.1 compression on pump gas. 9.5.1 on iron heads is about max with close listening for pinging
|
|
03-05-2009, 02:18 AM
|
||||||
|
||||||
|
9.5:1 is a good match to compression for that cam on premium pump gas... but both of those heads flow terribly. You have a cam and compression that will shine from 2000-6000 and head flow that will be more suited to 1000-4500.
Might want to spend some time porting or you might end up disappointed.
|
|
03-05-2009, 06:04 AM
|
||||||
|
||||||
|
Old thread = 11-09-2005
|
|
03-05-2009, 10:15 AM
|
||||||
|
||||||
|
dang it crussel...
|
|
03-05-2009, 04:55 PM
|
|||||
|
|||||
|
what did i say
|
|
03-05-2009, 10:32 PM
|
||||||
|
||||||
|
Quote:
|
|
|
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| AFR or Vortec heads? Cam? | rodent | Engine | 18 | 06-08-2010 03:50 PM |
| sbc heads | shieldbreaker | Engine | 5 | 08-27-2005 08:12 PM |
| Heads and Intake combo | black66 | Engine | 4 | 07-23-2005 11:33 PM |
| 427 heads | 93_406cobra | Engine | 2 | 04-13-2005 07:17 PM |
| looking for some head(s) now i'm gonna explode! | bullheimer | General Rodding Tech | 25 | 04-12-2004 01:16 PM |
