[DeTomaso] Quenched Head Rework or Tweaks???

Fri Jan 2 23:17:06 EST 2009

Thanks Ken, I also saw the Ferrea valves on Ebay and wasn't sure about their reputation. 
Interesting that they appear to be the same valve used in the 460, while other manufacturers
show a different part number. 

Jack suggested staying away from the $6 valves. I've seen some Milodon forged stainless
one piece valves in the Summit catalogue...I guess the intakes (part number MIL-45670-8) 
can be made from lesser quality stainless while the exhausts (part number MIL-45675-8) 
are made from premium 21-4N stainless. They're only $92 per set. It says they have larger 
seat margins for many regrinds. They're probably a little heavier which might require a 
better spring than stock. It says they're a good replacement for Street, Circle Track and Bracket
Motors. Those would probably work just fine. Anyone had experience with Milodon valves?

Tom Borcich

Date: Fri, 2 Jan 2009 19:44:01 -0800
From: kenn_green at yahoo.com
Subject: Re: [DeTomaso] Quenched Head Rework or Tweaks???
To: doug at silicondesigns.com; detomaso at realbig.com; tborcich at msn.com

Flatlander Racing appears to have the Manley Severe Duty 351C valves for $398 for all 16:

http://www.flatlanderracing.com/

They also have the Ferrea 6000 Series valves for $15 each, has anyone tried them?  Some people seem to prefer the Ferrea valves, I don't recall why.

They are usually cheaper than Summit if they have the part.

Ken

--- On Fri, 1/2/09, Thomas Borcich <tborcich at msn.com> wrote:

From: Thomas Borcich <tborcich at msn.com>
Subject: Re: [DeTomaso] Quenched Head Rework or Tweaks???
To: doug at silicondesigns.com, "Pantera REALBIG forum" <detomaso at realbig.com>
Date: Friday, January 2, 2009, 7:23 PM

Thanks for all the info back on the one piece valves...new valves it is.

Best regards, 

Tom Borcich

> From: doug at silicondesigns.com
> To: tborcich at msn.com
> Subject: RE: [DeTomaso] Quenched Head Rework or Tweaks???
> Date: Thu, 1 Jan 2009 13:45:33 -0800
> 
> Thomas,
> 
> 	One good choice for valves are Manley Racemaster (Severe Duty) one-piece
> stainless.  You can get them here for a reasonable price.
> 
> www.summitracing.com
> 
> Enter part number MAN-11782-8 (intake) & MAN-11783-8 (Exhaust)
> 
> Doug Braun
> 
> -----Original Message-----
> From: detomaso-bounces at realbig.com
> [mailto:detomaso-bounces at realbig.com]On Behalf Of Thomas Borcich
> Sent: Thursday, January 01, 2009 11:43 AM
> To: Pantera REALBIG forum
> Subject: [DeTomaso] Quenched Head Rework or Tweaks???
> 
> 
> 
> HAPPY NEW YEAR!!!  2009 is going to be a much better year cause the Panter
> should be back together.
> 
> I followed Jack's advice to go from the 72 open chambers to 71
> quenched chamber heads...they should arrive in a week or two from a
> fellow Pantera owner who had a complete set sitting on the shelf and
> gave me a smoking deal (Thanks Julian!!). I'm 90% sure the valves are
> original OEM. What kind of valve failure rate do the OEM values have
> once their three and a half decades old? I recall they're two piece,
and
> have read that some opt for one piece valves....I'm ok with
> the OEM's for now if their dependable at this age.
> 
> I'll end with a 10.5 to 1 CR+/-, (I will probably surface the heads to
make
> sure
> they're flat),  balanced stock lower end with TRW forged flat tops.
I'm
> removing the dual points and sticking in one of the electronic pointless
> modules
> with a rev limiter to keep it around 6,000-6,500. Cam was replaced
(previous
> owner) with a 498 lift intake and 510 lift exhaust, duration 262 intake
> 272 exhaust. I will make sure the cam is set at 0 degrees.
> 
> Should I do any porting (JUST KIDDING!!! Couldn't resist asking that).
> Actually
> I may just clean up and smooth the exhaust ports.
> 
> Are OEM springs ok to 6500 rpm if this combination will go that high?
> 
> I believe the heads are ready to bolt on, the seats are in pretty good
shape
> with a recent 3 angle grind and the stem seals are soft and pliable.  From
> pictures they look very clean and to have very little mileage on them
since
> a rework.
> 
> In high school I had a 67 Mustang GT Fast Back with a 289...stock Ford
valve
> train...
> I reved the sheeeeet out of that motor for years and never lost a valve or
> kissed
> a piston...definitely floated the valves a few times....point is the 351C
> has to have as good or better stock valve train than the 289...so why
> change for my purposes are (fun driving and a track day a few times a
year).
> I'd rather put time into other areas of the car to get back on the
road.
> 
> Tom Borcich
> 
> 
> #4382
> 
> 
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