Need Help w/W2 Identification
#2860834
12/16/20 03:13 PM
12/16/20 03:13 PM
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Joined: Oct 2005
Posts: 22 St. Charles, IL
roadracecuda
OP
member
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OP
member
Joined: Oct 2005
Posts: 22
St. Charles, IL
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I have a set of W2 heads that I need help identifying from the attached pictures. The previous owner ground off all of the exterior cast numbers. The casting number is still present on the inside of the head, but I believe that same casting was used for a couple of different PNs. There's a 4 digit number stamped on the end of the heads too but I'm not sure if that is something that someone added. I'm a total newbie to W2s so any help would be appreciated. Thanks!
Also, in the parts deal I got a 340 block dated coded 6-20-67. I imagine that's pretty damn early in the run for the 68 model year. Anyone happen to know what the first production date for the 340 block was?
1967 Barracuda Fastback Vintage Road Racer 1971 Scamp 2015 Challenger 1998 Ram 2500 CTD
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Re: Need Help w/W2 Identification
[Re: roadracecuda]
#2860852
12/16/20 03:45 PM
12/16/20 03:45 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Those are unported race W-2 reads.. the econo W-2 will have a cradle ground in for the rocker shaft.. forget the number in the inside(oil area).. that is just a casting number.. as to the first year of the 340.. I THINK that was 67 so that would be a early one EDIT I would think those are the long valve version.. which I think all the race versions are.. the econos have both the long and short versions
Last edited by MR_P_BODY; 12/16/20 03:52 PM.
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Re: Need Help w/W2 Identification
[Re: fast68plymouth]
#2860922
12/16/20 05:26 PM
12/16/20 05:26 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I’m going to say they’re either P5249769 or P5007355 Fast could be correct with those P/Ns... there is one other P/N but I dont think so..P5249770 this is a 55cc chamber
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Re: Need Help w/W2 Identification
[Re: MR_P_BODY]
#2861064
12/16/20 10:33 PM
12/16/20 10:33 PM
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Joined: Jan 2010
Posts: 669 Los Osos, Ca
CKessel
mopar
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mopar
Joined: Jan 2010
Posts: 669
Los Osos, Ca
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I had a set of those only Duster back in the mid 80's. When you get rocker shafts for them, make sure the oiling holes line up to the arm hole when the valve is closed. The mothership screwed up on them and didn't correct the issue. I got shafts from Ed Hamburger, before he went GM, and they were wrong too[ probably just reboxed mopar]. I found out the hardway that the holes only lined up when the arm was almost vertical. Tatered some bushed rockers and pushrods. Found out from a knowledgeable source that it was a factory screwup that didn't get resolved. If you get rollers from someone with shafts you will probably be ok. At the time, you could get bushed or non bushed iron units from Mopar or Norris made a really nice set of stainless rollers with shafts but like a dummy I didn't get those. Could have gotten a smoking price too since my boss bought direct from Norris. The pushrods, at that time, were the semi finished ones that you cut down, after measuring what you needed, then pressed in the cup end for the rocker screw.
Carl Kessel
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Re: Need Help w/W2 Identification
[Re: CKessel]
#2861326
12/17/20 02:59 PM
12/17/20 02:59 PM
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Joined: Jan 2003
Posts: 8,033 Tulsa OK
Bad340fish
master
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master
Joined: Jan 2003
Posts: 8,033
Tulsa OK
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I read somewhere that the heads that have the extra ribs around the lower head bolt holes are later castings, I do not know how true that is.
68 Barracuda Formula S 340
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Re: Need Help w/W2 Identification
[Re: Bad340fish]
#2861389
12/17/20 04:36 PM
12/17/20 04:36 PM
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Joined: May 2019
Posts: 165 W. Pa
usp4u
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member
Joined: May 2019
Posts: 165
W. Pa
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I read somewhere that the heads that have the extra ribs around the lower head bolt holes are later castings, I do not know how true that is. Yes the support ribs were from a revision. Older versions also wouldnt have had the dual bolt pattern. Now, what constitutes "early" vs. "late" is up for debate. Ive never gotten a straight answer on that and W2s were produced for a long time. Also looks like someone has ground away the "Mopar" and "W-2". Maybe to disguise them.
Last edited by usp4u; 12/17/20 04:37 PM.
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Re: Need Help w/W2 Identification
[Re: usp4u]
#2861420
12/17/20 06:04 PM
12/17/20 06:04 PM
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Joined: Jan 2003
Posts: 6,149 Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,149
Melbourne , Australia
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I read somewhere that the heads that have the extra ribs around the lower head bolt holes are later castings, I do not know how true that is. Yes the support ribs were from a revision. Older versions also wouldnt have had the dual bolt pattern. Now, what constitutes "early" vs. "late" is up for debate. Ive never gotten a straight answer on that and W2s were produced for a long time. Also looks like someone has ground away the "Mopar" and "W-2". Maybe to disguise them. Very likely they were intended for FAST racing or another class that requires a "stock" appearance. To me I would say that any W2 head with the external ribs is a later, revised casting. As we know, they often had the closed chamber as well, although there were some of the later castings that had an open chamber as well.
Alan Jones
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Re: Need Help w/W2 Identification
[Re: usp4u]
#2861601
12/18/20 01:25 AM
12/18/20 01:25 AM
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Joined: Jan 2003
Posts: 6,149 Melbourne , Australia
LA360
master
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master
Joined: Jan 2003
Posts: 6,149
Melbourne , Australia
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I actually have a set of the later/ribbed open chamber W2s on the shelf I remember dealers clearing the open chamber race version (that required pedastals) out for just over $100 ea. Was a while ago now. I bought long lave econos at the time, but sold them off down the track.
Alan Jones
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Re: Need Help w/W2 Identification
[Re: roadracecuda]
#2861602
12/18/20 01:43 AM
12/18/20 01:43 AM
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Joined: Jan 2003
Posts: 31,071 Oregon
AndyF
I Win
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I Win
Joined: Jan 2003
Posts: 31,071
Oregon
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Those are a much later casting than the W2 heads I sold earlier this year. The set I had were part number 3870812 and casting number 3870810. Mine were an open chamber race head. Yours appear to be a closed chamber race head or else the heads have been milled so much that they turned an open chamber into a closed chamber. The set I had was very early production and didn't have the ribs. I also had an early 340 block. Sold it as a package deal to a guy who always wanted a W2 340 combo for his Duster. Ended up making about 600 hp on the dyno. Should be a fun street combo.
Last edited by AndyF; 12/18/20 01:45 AM.
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Re: Need Help w/W2 Identification
[Re: AndyF]
#2862381
12/20/20 12:10 AM
12/20/20 12:10 AM
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Joined: Jan 2003
Posts: 3,505 DFW
mr_340
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master
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DFW
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It looks like a 59 degree head. I've seen 48 degree heads that have the intake pushrod holes breaking through the intake face.
Floyd Lippencott IV
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Re: Need Help w/W2 Identification
[Re: mr_340]
#2862492
12/20/20 12:03 PM
12/20/20 12:03 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
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Posts: 14,514
So. Burlington, Vt.
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The early ones like Andy had have the exhaust side of the head looking very much like an OE head. The “later” ones, like the OP has have the reinforcing ribs. And then there are some in between versions where they cleaned up the exhaust side so it doesn’t really look like a stock head anymore...... but the ribs hadn’t shown up yet.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Need Help w/W2 Identification
[Re: AndyF]
#2862604
12/20/20 05:01 PM
12/20/20 05:01 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
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So. Burlington, Vt.
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I believe the “smooth” ones were very crack prone out along that lower region....... which is why the ribs were added...... to stiffen that area of the casting.
The W2 aficionados can probably speak to that.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Need Help w/W2 Identification
[Re: fast68plymouth]
#2862646
12/20/20 06:15 PM
12/20/20 06:15 PM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
master
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master
Joined: Jan 2003
Posts: 9,826
las vegas
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The blue set was purchased from McCandless back in earlier 80s for 75 dollars each...the orange set was purchase in early 90s from another racer...both are the early race head. The blue set were used on several engines thru the years and are awaiting a rebirth...the orange ones were sold at MATS several years ago at a nice profit.....lol
There is also a picture of the later set there too....they are all 59 degree heads with open chambers,,,,,
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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Re: Need Help w/W2 Identification
[Re: 70AARcuda]
#2862650
12/20/20 06:21 PM
12/20/20 06:21 PM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
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Posts: 14,514
So. Burlington, Vt.
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Interestingly....... the blue and orange heads have different exhaust bolt patterns.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Need Help w/W2 Identification
[Re: fast68plymouth]
#2862653
12/20/20 06:23 PM
12/20/20 06:23 PM
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Joined: Jan 2003
Posts: 9,826 las vegas
70AARcuda
master
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master
Joined: Jan 2003
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las vegas
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And the last pic with the newer head has bolt exhaust port patterns...lol
Tony
70 AARCuda Vitamin C 71 Dart Swinger 360 10.318 @ 128.22(10-04-14 Bakersfield) 71 Demon 360 10.666 @122.41 (01-29-17 @ Las Vegas) 71 Duster 408 (10.29 @ 127.86 3/16/19 Las Vegas)
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