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Smlblk Cylhd CC's?? #1526615 10/31/13 05:35 PM 10/31/13 05:35 PM
Joined: Jan 2003 Posts: 8,940 Holly/MI D Dean_Kuzluzski OP master
Dean_Kuzluzski OP master D Joined: Jan 2003 Posts: 8,940 Holly/MI	Been playin' around with a syringe and a piece of plexyglass and checked a set of late 70's 596's and got "60cc's". Threw some 318 593's on the bench and got "69cc's". I'm thinkin' the 360 heads were milled? Or does that sound normal. I'll check some 308's and "X" heads tomorow. R.I.P.- Gary "Coop" Davis 02/09/68-05/13/04

Re: Smlblk Cylhd CC's?? [Re: Dean_Kuzluzski] #1526616 10/31/13 06:36 PM 10/31/13 06:36 PM
Joined: Jan 2003 Posts: 25,200 Upper Midwest M MoparforLife Too Many Posts
MoparforLife Too Many Posts M Joined: Jan 2003 Posts: 25,200 Upper Midwest	Those 360 were cut quite a bit. I have CC'd quite a few and the run of the mill OEM head no matter what pre-mag casting was 70-72 CC range.. Almost sounds like you have the readings mixed up.

Re: Smlblk Cylhd CC's?? [Re: Dean_Kuzluzski] #1526617 10/31/13 07:21 PM 10/31/13 07:21 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	chrysler factory milling machines made straight marks on the surface finish & most all machine shop milling machines make curved marks so a visual may tell you something (but obviously not how much was taken off). As suggested try again & 60 is closed chambered territory. Holler how it goes live every 24 hour block of time like it's your last day on earth

Re: Smlblk Cylhd CC's?? [Re: RapidRobert] #1526618 11/01/13 02:10 PM 11/01/13 02:10 PM
Joined: Jan 2003 Posts: 8,940 Holly/MI D Dean_Kuzluzski OP master
Dean_Kuzluzski OP master D Joined: Jan 2003 Posts: 8,940 Holly/MI	Quote: chrysler factory milling machines made straight marks on the surface finish & most all machine shop milling machines make curved marks so a visual may tell you something (but obviously not how much was taken off). As suggested try again & 60 is closed chambered territory. Holler how it goes Ok, I checked the 596 casting again and it's still 60cc's. The quench pad is definitely not as deep as the other smallblock heads I have. The 593's were taken off an original motor from my 80 Cordoba. Checked an "X" head and a "308" this morning too. Don't know the real history on the "X" since it came on a rebuilt motor. But the "308" was from a city municipal van that I got the whole motor from and tore into. 593 = 69cc 596 = 60cc X = 66cc 308 = 68cc I'm interested to get the milled 596'ers on my budget 318 to mock-up an intake fitting. May have those gone through after a bit of bowl/port work. What this does tell me.......... is to check out what I have before spending too much time on a set of heads that I thought had more compression for a 318. I prep'd those 593/318 casting and the 308's are the same or slightly better compression with a whole lot better porting. R.I.P.- Gary "Coop" Davis 02/09/68-05/13/04

Re: Smlblk Cylhd CC's?? [Re: Dean_Kuzluzski] #1526619 11/01/13 07:18 PM 11/01/13 07:18 PM
Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska R RapidRobert Circle Track
RapidRobert Circle Track R Joined: Nov 2003 Posts: 36,040 Lincoln Nebraska	The 308's would be the best iron open chambered SB heads all else being equal as in what needs to be done to them compared to the others live every 24 hour block of time like it's your last day on earth

Re: Smlblk Cylhd CC's?? [Re: RapidRobert] #1526620 11/01/13 07:38 PM 11/01/13 07:38 PM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	Most likely they were milled about .030. I have a set of 915 "j" that have been milled .040 and have new valves without the concaved area at the bottom and they are at 59cc.

Re: Smlblk Cylhd CC's?? [Re: ademon] #1526621 11/01/13 07:40 PM 11/01/13 07:40 PM
Joined: Sep 2004 Posts: 6,906 IL, Aurora A ademon master
ademon master A Joined: Sep 2004 Posts: 6,906 IL, Aurora	Maybe even close to .050 if they are 1.88 stock valves

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