Just for interest's sake - Weslake SB Chevy 4-valve heads

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old_chopper
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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by old_chopper » Fri Aug 30, 2013 8:07 am

I'm sure there are heads out there today that out perform these and I bet the valvetrain is rpm limited, but, there aren't any that would look as cool as these in an open fendered hot rod! I wonder if there would be a market if a shop brought these or similar heads back.

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by Barbapapa » Fri Aug 30, 2013 8:47 am

PackardV8 wrote:
And you can buy a low miles, perfectly running, 32-valve quad-cam 5.0L Porsche V8 complete with harnesses and auxiliaries off Ebay for $2500.
As much as I loved driving the 928, if someone tried to give me one today, I'd chase him off with a shotgun. The local Porsche dealer is relatively new and if he didn't sell it, he doesn't want to see it in his shop. There's literally no one in 300 miles who stocks any parts; much less anyone who's ever seen the inside of a 928 V8 or knows how to change the water pump. I've been inside one and hope never to go there again.

jack vines
Everyone seems to have heard of a mechanic that says Porsche V8s have a 7 foot timing chain that runs from front to back. The mechanic is used to Chevy motors and we all think that there's something wrong with Porsches because the mechanic has never seen one. We think they are so scary that we threaten shotguns upon the prospect of seeing something that dares to be different.

Jack, you have PACKARD in your name but are turned off by engines that don't have parts stocked locally?

The Porsche 928 32v was the first mass produced engine typical of many modern 4v engines, it's timing belt and other features are not unusual, the hydraulic OHC bucket valvetrain is typical and not unusual. Aside from it being different back in the day, it's pretty typical of current engines.
Parts are available, many trough Worldpac. There are 928 specific companies and aftermarket efforts.

In all of the letting lazy mechanics determine everybody's opinion of them, please consider:

4.803 bore spacing same as a Mopar 440, nice 4 valve heads. That means these are big block 4v engines just waiting for a brave hot-rodder.
Mine is 427 cu in, oversquare, 4.28 bore, 3.7 stroke, the piston doesn't poke out of the bottom of the cylinder like many common domestic strokers with sealing issues. It has 4 valves and makes power typical of a 4v engine without high valvespring pressure and pushrod problems.
I see 640hp on a chassis dyno with 93 octane and 10:1 with no detonation and it drives like a lamb. Try that with another 427 cu in engine that your mechanic says is great because parts are locally available.
Mike S.

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by Barbapapa » Fri Aug 30, 2013 8:49 am

promachine wrote:I have one of these Westlake chevys in my shop now and from what I have heard there was only 5-10 sets of these heads made.
Aren't these the ones Harvey crane was involved with along with the main designer?
I know I've seen multiple sets in recent years in storage along with a magazine article from the early 70s, are these the same?
Mike S.

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by wil8115 » Fri Aug 30, 2013 9:36 am

Arao is now making LSX32v heads. OK Cool factor restored.

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by Notchback » Fri Aug 30, 2013 10:44 am

Lozano Brothers built a modified Porsche Cayenne engine that won the 24 hr. of Rolex race. I think that was a pretty interesting engine to use.
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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by SchmidtMotorWorks » Fri Aug 30, 2013 10:46 am

Barbapapa wrote:
promachine wrote:I have one of these Westlake chevys in my shop now and from what I have heard there was only 5-10 sets of these heads made.
Aren't these the ones Harvey crane was involved with along with the main designer?
I know I've seen multiple sets in recent years in storage along with a magazine article from the early 70s, are these the same?
No, the heads you are thinking of are the Moser V8. There are 2 engines with those heads in the Speed Museum in Lincoln Nebraska.

By the way, if anyone has not been to that museum, make a point of going.
It is only open for tours (guided) at a particular starting time, plan accordingly.
http://www.schmidtmotorworks.com Aerospace Machine Work: Prototypes, Tooling, Molds.

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by Wesfolk » Thu May 08, 2014 10:15 pm

Very interested in getting a pair of these "WESLAKE 32V" heads for either SBC or preferably SBF. Tried to message "Promachine", as he states in a post that he has a pair, but can't get him here. There are two sets as part of a static display engine at the Museum in Lincoln, NE. Neither Carson Smith, nor Greg Nicol will call me back. I have a purpose for these, so if anyone can help out I would be appreciative.

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by Billzilla » Fri May 09, 2014 7:33 am

Interesting! I have never heard of those heads before. The chamber shape and ports look half reasonable as well.

FWIW there was an aftermarket wheel company in Australia by the name of Globe that built a very limited number of DOHC 32v heads for small block Fords. I can't even find a photo of them any more, it's a shame.

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by lada ok » Fri May 09, 2014 9:57 pm

PackardV8 wrote:Looking at those, I'm getting an Ardun vibe. Lot's of engineering, casting and complication to work with the common short block of the day. Anyone want to wager today's better LS heads will make more horsepower per cubic inch?

jack vines
I don't think the ' LS ' heads would be in the hunt, what sort of bhp / lt would you see @ 7500 --- 10,000 ?

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by flyingwedge » Tue May 13, 2014 2:40 pm

lada ok wrote:
PackardV8 wrote:Looking at those, I'm getting an Ardun vibe. Lot's of engineering, casting and complication to work with the common short block of the day. Anyone want to wager today's better LS heads will make more horsepower per cubic inch?

jack vines
I don't think the ' LS ' heads would be in the hunt, what sort of bhp / lt would you see @ 7500 --- 10,000 ?
>> Well known guy/name escapes me@ moment, In Santee, Ca., puts 4V , 928 heads on the BBC. His nitche is puting 4 V heads on various/usually US based V8's.

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by lada ok » Tue May 13, 2014 5:53 pm

we have a couple of early model ford mustangs that run 302" motors with weslake heads down here in NZ ..... these cars run in open saloon car tarmac ... they would still be in the winners circle .... can someone add to this ?

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by pdq67 » Tue May 13, 2014 9:59 pm

" Well known guy/name escapes me@ moment, In Santee, Ca., puts 4V , 928 heads on the BBC. His nitche is puting 4 V heads on various/usually US based V8's."

By chance, Pete Ardema??

pdq67

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by DaveMcLain » Wed May 14, 2014 7:57 am

Barbapapa wrote:
PackardV8 wrote:
And you can buy a low miles, perfectly running, 32-valve quad-cam 5.0L Porsche V8 complete with harnesses and auxiliaries off Ebay for $2500.
As much as I loved driving the 928, if someone tried to give me one today, I'd chase him off with a shotgun. The local Porsche dealer is relatively new and if he didn't sell it, he doesn't want to see it in his shop. There's literally no one in 300 miles who stocks any parts; much less anyone who's ever seen the inside of a 928 V8 or knows how to change the water pump. I've been inside one and hope never to go there again.

jack vines
Everyone seems to have heard of a mechanic that says Porsche V8s have a 7 foot timing chain that runs from front to back. The mechanic is used to Chevy motors and we all think that there's something wrong with Porsches because the mechanic has never seen one. We think they are so scary that we threaten shotguns upon the prospect of seeing something that dares to be different.

Jack, you have PACKARD in your name but are turned off by engines that don't have parts stocked locally?

The Porsche 928 32v was the first mass produced engine typical of many modern 4v engines, it's timing belt and other features are not unusual, the hydraulic OHC bucket valvetrain is typical and not unusual. Aside from it being different back in the day, it's pretty typical of current engines.
Parts are available, many trough Worldpac. There are 928 specific companies and aftermarket efforts.

In all of the letting lazy mechanics determine everybody's opinion of them, please consider:

4.803 bore spacing same as a Mopar 440, nice 4 valve heads. That means these are big block 4v engines just waiting for a brave hot-rodder.
Mine is 427 cu in, oversquare, 4.28 bore, 3.7 stroke, the piston doesn't poke out of the bottom of the cylinder like many common domestic strokers with sealing issues. It has 4 valves and makes power typical of a 4v engine without high valvespring pressure and pushrod problems.
I see 640hp on a chassis dyno with 93 octane and 10:1 with no detonation and it drives like a lamb. Try that with another 427 cu in engine that your mechanic says is great because parts are locally available.
About a year ago I had a guy bring in a set of heads for one of those Porsche V8's for a valve job. We were laughing when he picked them up about how back in the day when they were new they would have seemed "exotic". In today's world they are no big deal at all and they were actually very easy to work on with their simple valvetrain. About the only thing wrong with his heads were the valve seals which were falling apart. He said that rebuilding the engine wasn't that difficult and it runs good.

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by flyingwedge » Wed May 14, 2014 12:20 pm

pdq67 wrote:" Well known guy/name escapes me@ moment, In Santee, Ca., puts 4V , 928 heads on the BBC. His nitche is puting 4 V heads on various/usually US based V8's."

By chance, Pete Ardema??

pdq67
Pete-Yes, thanks, hope he'll chime in. flyingwedge. :)

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Re: Just for interest's sake - Weslake SB Chevy 4-valve head

Post by Modified49 » Fri May 16, 2014 12:34 pm


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