[DeTomaso] 427 tunnel port

Jim Wallace pantera_4220 at yahoo.com
Tue Jan 13 09:03:41 EST 2009


All,

The problem with the tunnel port intake is that pushrod for the valve runs thru a sleeve in the center of the intake port, restricting it.  The SOHC motor has the overhead cam and this sleeve is removed....nice design.  There is not much low end torque but terrific top end power especially with a blower.

Sitting on a low riser 427 dual carb aluminum intake from the factory in 1964 with the throttle mechanism attached for a future FE project....in Boston

Jim



--- On Tue, 1/13/09, Thomas Borcich <tborcich at msn.com> wrote:

> From: Thomas Borcich <tborcich at msn.com>
> Subject: [DeTomaso] 427 tunnel port
> To: "Pantera Mike Drew" <mikeldrew at aol.com>, "Pantera REALBIG forum" <detomaso at realbig.com>, "Pantera Will Kooiman" <wkooiman at earthlink.net>
> Date: Tuesday, January 13, 2009, 1:48 AM
> Mike and Will you guys were right...I just tried to do a
> google search for 428 tunnel port...nothing...
> 
> then I did 427 tunnel port and found the link below.
> That's the head I saw, the bottom of the port
> isn't flat, kind of oval shapped, a more flat radius
> than the top and sides.  
> www.chuckbrandt.com/tunnelport.htm
> Yeah I agree you would much rather have that head on the
> 427. I'll have to take another look when
>  I go back...didn't connect that it was SOHC head.  I
> just looked at the intake ports and the combustion 
> chamber and the valves didn't look that much bigger
> that the 351C. The site says that the intakes 
> are ONLY 2.25 and the exhaust is 1.75. Some great original
> Ford literature is show about the motor.
> 
> Isn't that the motor that was put in some of the
> Fairlane Thunderbolt's?
> 
> Will take a look at Craigs list...there's a 427TP
> listed for $6500...woops it only has one head.
> http://asheville.craigslist.org/pts/957732123.html
> 
> Tom Borcich
> 
> 
> 
> 
> 
> 
> 
> From: MikeLDrew at aol.com
> Date: Tue, 13 Jan 2009 01:19:04 -0500
> Subject: Re: 428 tunnel port
> To: tborcich at msn.com; detomaso at realbig.com
> 
> 
> 
> In a message dated 1/12/09 22 12 54, tborcich at msn.com
> writes:
> 
> 
> 
> 
> 
> Mike I was thinking the 427 also and asked for
> clarification...he insisted 428?????
> 
> 
> 
> 
> 
> 
> 
> He might have put a pair of the 427 tunnel port heads on a
> 428 block--it's physically possible.   But the 427 block
> was far superior and was the 'race' block, whereas
> the 428 was more of a truck/station wagon engine, so
> that's an unusual thing for somebody to do.
> 
> 
> 
> The heads were only ever referred to as 427 tunnel port
> heads however.   You can educate him next time you see him.
> :>)
> 
> 
> 
> Mike
> 
> 
> 
> 
> 
> 
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