This bring up a question -
I am planning on using AFR 185 heads on the 1991 302 HO block. Will I have any
clearance or CAT header problems?
Duke
B382002037
---- Tom Parker <tkparker1941@gmail.com> wrote:
> Allan,
>
> What size heads are you looking at? There are size constraints built into
> the Tiger.
>
> I'm using Edelbrock E-Street heads (not planning on racing or anything
> extravagant) with Sunbeam Specialties headers. They're the same size
> externally as the Edelbock Performer heads but without the polishing. I
> measured against the stock heads, same external dimensions, larger
> rectangular ports. The headers were about the same size as the Edelbrock
> ports.
>
> If memory serves Ford Windsor size heads wont fit under the Tiger firewall
> (I'm sure you know this but it bears repeating) and the Edelbrock Performer
> RPM Intake manifold is too tall to allow the carb to fit under the stock
> hood. See Tim suddard's article in Classic Motorsports.
>
> Looking at my SS headers I have to say no, they can't be enlarged. The tubes
> are so wide that they used 1/8" hex head bolts and it was impossible to get
> a socket on two of them. If you were to "square up the ports on the stock
> Ford heads you'd be into the bolt holes.
>
> I can send you pictures offline if you wish showing the port size of the
> E-Street heasd and stock Ford heads. I think rthey'll show what I'm trying
> to explain.
>
> Tom
>
> On Thu, Jan 6, 2011 at 2:52 PM, Allan Ballard <allanballard@att.net> wrote:
>
> > The aluminum heads I am looking at have square ports.
> >
> > The square ports are approx. the same size on all sides as the long side of
> > the rectangular ports on a stock iron 289 head.
> >
> > Can the ports on CAT headers be enlarged?
> >
> > Is there enough 'meat' to grind them out to match larger ports on an
> > aluminum
> > head?
> >
> > Allan Ballard
> > MK1-a Tiger
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