Classic Mustangs List Archive

This read-only message was archived from a public mail list.
Mail From: J Strube (email redacted)

Rich Silva wrote:
>
> I haven't measured RAW performance yet... but I have the TFS/R
> heads with the 2.02/1.6(?) valves (the big valves). In daily
> driving the engine sounds wonderful, but is "stumbly" at the bottom
> end (like I sometimes have to "tap" it to get it moving). Its great
> if I just jump on it (of course, then I don't go anywhere, just lots
> of smoke). This might be because of the carb I was talked into (a
> double pumper that my engine builder claims he can make as responsive
> as any vacuum secondary carb...), but I haven't played with that
> much yet...
>

Rich, do you have an Automatic? If so, you definitely need a vacuum
carb. I would use an edelbrock or Holly 750 vac. You didn't say which
cam you have, but it sounds like you need some gears too. If you have
the RPM cam, you will probably want 4.11 or maybe 3.73. are your heads
the TFS R or just the TW heads? Since you said 2.02 valves, I am
assuming you have the regular TFS heads. THe R head is so very over
kill for a 302 sized engine, it would really suck lower in the range.
you need special headers too.

a setup with the TFS head, RPM intake, should run nicely. I bet you
need carb and gear help. Your 2.25 exhaust is a little restrictive, I
went 2.5 on mine. it shouldn't make that much difference though.

> My opinion so far is that I built an engine that breathes too well
> for the street... (Holley 600(+)Cfm carb, Performer RPM intake, TFS/R
> heads with big valves, 1 5/8inch long tube headers, 2 1/4 inch exhaust
> through FlowTech (Master?) mufflers to tail pipes dumping just in front
> of the rear valance...
>
> I think a Vacuum secondary carb, stock size valves, maybe the Tri-Y
> headers would have been a better choice all around for the street...
>

I would vote for the vac carb, but the heads should work.

John Strube
66 EFI GT
93 Lightning


------------------------------------------------------------------------
All the list info you'll ever want: antler.webworks.ca/~server/cm