W2 casting # 4532689 ( corrected - 4532693)
#2007885
02/08/16 12:56 PM
02/08/16 12:56 PM
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Joined: Jan 2003
Posts: 9,875 Weddington, N.C.
Streetwize
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Is this a valid casting number? I think its a 48 degree head (47cc chamber) but cant find any intel on it. Looking at a complete R block 365" asphalt circle track motor to maybe use as the foundation for a turbo motor Thanks!!
Last edited by Streetwize; 02/12/16 12:27 AM.
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Re: W2 casting # 4532689
[Re: Streetwize]
#2008016
02/08/16 05:11 PM
02/08/16 05:11 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Romeo MI
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Like we talked about on the phone... those are the race W-2 heads.. I think all the casting numbers are the same(I'm down in Texas so I cant look at either set of W-2 I have to see the casting numbers).. I cant see in the pic if the intake wall is notched for the PR.. I have a set of 59* that have the notch in the intake wall for the PRs... the race head and the econo are basically the same other than the econo has the cast in shaft stands.. the race head has them milled off... they make a long and short valve for them also... the normal long valve uses a 2" spring height.. as to the intake like we talked about.. a measurement would be needed to see if it would work
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Re: W2 casting # 4532689
[Re: Streetwize]
#2008049
02/08/16 05:54 PM
02/08/16 05:54 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Romeo MI
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Thanks again, Mike!!
BTW, we were talking about bridgeporting this bad boy to try to fit a 9.2" deck block I have one of those for W-2s.. pretty sure its a 4500 type.. but not positive since its been a while since I've looked at it
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Re: W2 casting # 4532689
[Re: MR_P_BODY]
#2008050
02/08/16 05:56 PM
02/08/16 05:56 PM
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Joined: Jan 2003
Posts: 9,875 Weddington, N.C.
Streetwize
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Thinking Turbo/EFI with a custom sheetmetal Top...maybe
Stef,
Probably going to pull at least one head, more curious about the Chamber CC.
It's 365 cube and allegedly 11:1, that would infer (assuming flat top 'spec' pistons' it would have a small closed chamber head.
Allegedly the 48 degree heads flow better than the 59's, was that due to a smaller pushrod bulge or is it also a different (15 degree) valve angle?
Last edited by Streetwize; 02/08/16 06:12 PM.
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Re: W2 casting # 4532689
[Re: Streetwize]
#2008060
02/08/16 06:13 PM
02/08/16 06:13 PM
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Joined: Feb 2005
Posts: 20,174 PA.
pittsburghracer
"Little"John
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"Little"John
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PA.
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Jegs still lists a 48 and 59 degree W2 on their website. I was trying to find the PT number you had listed but no luck.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: W2 casting # 4532689
[Re: pittsburghracer]
#2008075
02/08/16 06:30 PM
02/08/16 06:30 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Posts: 52,972
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Jegs still lists a 48 and 59 degree W2 on their website. I was trying to find the PT number you had listed but no luck. What he shows it the casting number... those arent really what anyone shows normally... I think they have the same casting numbers on a LOT of the W-2 stuff.. I had one econo and race head.. they both had the same casting numbers... I cant say if both the 48* and 59* start out as the same casting or not but with the small changes they could
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Re: W2 casting # 4532689
[Re: Streetwize]
#2009210
02/10/16 01:48 PM
02/10/16 01:48 PM
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Joined: Jan 2003
Posts: 9,875 Weddington, N.C.
Streetwize
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Just a follow up, we pulled the head and it's a 693 48 degree and it's definitely a 48 degree R block. Looks like a steel crank 3.58" 340 main with H beam rods and the bores are 4.03". Good news, it has at least a couple overbores left in it and it may hone fine where it's at. The bad news, the Heads are Open chamber but for some reason the chambers look smaller than the last pair of W2's I put on the 360 based 440. Were there 2 sizes of Open chamber W2's? May have been milled I suppose but we're still digging into it. Ports look untouched and the intake is the MP stock looking 4 bbl dual plane. also for some reason (I suppose in an effort towards saving 2 1/2 whole oz on the 220 pound block), they chose to mill the top "extra" row of head bolt holes out of the block....why would anybody do that?
Last edited by Streetwize; 02/10/16 01:56 PM.
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Re: W2 casting # 4532689
[Re: Streetwize]
#2009404
02/10/16 06:13 PM
02/10/16 06:13 PM
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Joined: Sep 2014
Posts: 4,457 Washington
madscientist
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Washington
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That is my favorite chamber. I don't care for that closed chamber deal they have.
I don't know why every one gets all spun out on that chamber. It SHOULD make more HP than the closed one.
I'm not sure why they milled off the upper row of head bolts.
EDIT: do not mill the chamber down to close it. That is a sure HP killer.. And it makes the head weak.
Last edited by madscientist; 02/10/16 06:14 PM.
Just because you think it won't make it true. Horsepower is KING. To dispute this is stupid. C. Alston
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Re: W2 casting # 4532689
[Re: madscientist]
#2009600
02/11/16 12:27 AM
02/11/16 12:27 AM
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Joined: Jan 2003
Posts: 9,875 Weddington, N.C.
Streetwize
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Its really in good shape
The W2's are the same dual exhast pattern ones I have on the 440 stroker except 48 degrees
Last edited by Streetwize; 02/11/16 12:31 AM.
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