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What small block heads are these? #2465367 03/12/18 07:39 PM 03/12/18 07:39 PM
Joined: Apr 2008 Posts: 401 Western Colorado 3 340Scamp OP mopar
340Scamp OP mopar 3 Joined: Apr 2008 Posts: 401 Western Colorado	I've got a set of small block heads with a weird casting number. I know the J heads are castings #3418915 but these head are casting numbers 348915. They have 1.88/1.60 valves and have the air injection ports in the exhaust that were never drilled. On the intake runners where they usually have 340 or 360 these have 20F and one has 30F. Any ideas? Last edited by 340Scamp; 03/12/18 07:39 PM.

Re: What small block heads are these? [Re: 340Scamp] #2465368 03/12/18 07:40 PM 03/12/18 07:40 PM
Joined: Jun 2014 Posts: 5,183 P Porter67 master
Porter67 master P Joined: Jun 2014 Posts: 5,183	Mid 70-s car/truck/van head.

Re: What small block heads are these? [Re: 340Scamp] #2465369 03/12/18 07:43 PM 03/12/18 07:43 PM
Joined: Apr 2008 Posts: 401 Western Colorado 3 340Scamp OP mopar
340Scamp OP mopar 3 Joined: Apr 2008 Posts: 401 Western Colorado	Also, would these be called 915 heads?

Re: What small block heads are these? [Re: Porter67] #2465374 03/12/18 07:52 PM 03/12/18 07:52 PM
Joined: Apr 2008 Posts: 401 Western Colorado 3 340Scamp OP mopar
340Scamp OP mopar 3 Joined: Apr 2008 Posts: 401 Western Colorado	[quote=EV2Bird] Mid 70-s truck/van head. [/quote 318 or 360?

Re: What small block heads are these? [Re: 340Scamp] #2465384 03/12/18 08:16 PM 03/12/18 08:16 PM
Joined: Jun 2014 Posts: 5,183 P Porter67 master
Porter67 master P Joined: Jun 2014 Posts: 5,183	Im sure others will chime in as I could be wrong. But if they are what I think they are 360.

Re: What small block heads are these? [Re: 340Scamp] #2465453 03/12/18 10:04 PM 03/12/18 10:04 PM
Joined: Jun 2014 Posts: 5,183 P Porter67 master
Porter67 master P Joined: Jun 2014 Posts: 5,183	This might be helpful... these have the off casting info a bit like yours. So early to mid 70-s 360 heads??? https://www.forabodiesonly.com/mopar/threads/can-anyone-identify-these-heads.365980/

Re: What small block heads are these? [Re: 340Scamp] #2465535 03/12/18 11:22 PM 03/12/18 11:22 PM
Joined: Jan 2005 Posts: 12,415 Kalispell Mt. H HotRodDave I Live Here
HotRodDave I Live Here H Joined: Jan 2005 Posts: 12,415 Kalispell Mt.	there is a 74 on those heads, they are a 74 360 truck head I am not causing global warming, I am just trying to hold off a impending Ice Age!

Re: What small block heads are these? [Re: 340Scamp] #2465803 03/13/18 03:11 PM 03/13/18 03:11 PM
Joined: Mar 2008 Posts: 883 Affton MO Q qwkmopardan super stock
qwkmopardan super stock Q Joined: Mar 2008 Posts: 883 Affton MO	I had a set of these a few years back. Had a lot of core shift so I sold them to a guy with a 4X4 truck. Were not good candidates for porting. Missing the first number of casting number. Also had a weird logo, looks like a micrometer, on them. I think they are aftermarket or not cast in the same place as normal.

Re: What small block heads are these? [Re: qwkmopardan] #2466154 03/14/18 12:48 AM 03/14/18 12:48 AM
Joined: Apr 2008 Posts: 401 Western Colorado 3 340Scamp OP mopar
340Scamp OP mopar 3 Joined: Apr 2008 Posts: 401 Western Colorado	Originally Posted By qwkmopardan I had a set of these a few years back. Had a lot of core shift so I sold them to a guy with a 4X4 truck. Were not good candidates for porting. Missing the first number of casting number. Also had a weird logo, looks like a micrometer, on them. I think they are aftermarket or not cast in the same place as normal. Like this.

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