I'm building a 292 for my 55 t-bird, going to use the 331 stroker kit or the 318 stroker kit, Mummerts street ported ECZ-G heads, Blue Thunder intake, Holley 570 street avenger, MSD distributor with spark box, Red's headers with a 2.5 exhaust system. I am using the Fordomatic, my question is I want a cam with a very lopey sound, but I would like it to be street driveable and not destroy the transmission when I put it in gear. I was looking at Mummerts Y-284S, but it is not recommended with a Fordomatic, I was wondering if anybody has experience with the Y-270S cam and if it has a lopey sound. I am open to suggestions.

Thanks Ed

Ed,

I'm using the Y-270S cam from Mummert. It is made by Clay Smith Cams. It does not really have a "lopey" idle.

I have it on my 312 that is bored to 318 with ECZ-C heads and an E code manifold with dual 500 CFM carbs.

It will idle at 550 in gear with the Ford-O-Matic. It does have a slight lope at this RPM. Remember the Ford-O-Matic torque converter is real tight. If you want the Y-284S cam you will need to have the converter worked on or I suspect it won't idle well in gear. I runs great on the street with this cam. I would only use the Y-284S with a stick and some 4.10 gears.

I hope this helps some.

Jim

  Jim Rowe Elkhorn, NE

Jim,

When you say the torque converter is tight, what does that mean? I have zero knowledge about the Fordomatic. Is there anyone who can modify the torque converter on the Fordomatic?

Thanks Ed

you can check out what I did under "dyno results" in the street section.

I used a complete Isky rpm 300 kit, some lope. going to run an AOD trans. and was concerned about idle with it.

IMHO don't worry about the lope sound with everything you are thinking of doing it WILL sound good cause it's the y firing order.

Automatics need the vacuum.

But I would recommend you consider a different idea on the headers. I used Ford Power Train Headers from Stan in Seattle. You can get the same brand from Mummert.

http://www.fordpowertrain.com/Headers.htm

Let it breathe!

       A  L  A  N   F  R  A  K  E  S   ~  Tulsa, OK    

Bird55,

I have a brand new set of Ford Powertrain headers, they will not fit the steering I installed, I am stuck with Red's headers or stock exhaust manifolds, nothing else will fit.

Thanks Ed

woops, sounds like rack and pinion setup. OK well the reds will work but how about Sanderson-I know their setup is still better than reds. I used to have a set.

I think you may have to call them as I don't think they list them on the website.

       A  L  A  N   F  R  A  K  E  S   ~  Tulsa, OK    

Bird55,

The Sandersons won't fit either, trust me Red's was my last choice. I installed a power steering box made for the 55-57 Chevys, the steering works great, super quick, 2.5 turns lock to lock.

Ed

ok, then back to the original cam question-Mummert is very good at guiding you especially since he's doing the headwork. He recommended my choice and I got it thru Ted Eaton- also a very good guide. It was a good choice for me because of a matched set of lifters, springs, pushrods and everything. Always remind the manufacturer of the cam about the fordomatic or auto. Again I believe the Headwork coupled with the other things you stated you planned will be a good street engine. I'm sure mine has more lope to it but heck, it also has more noise and about 150 more hp than it used to!

       A  L  A  N   F  R  A  K  E  S   ~  Tulsa, OK    

Check with Mummert, he used to advertise T-Bird headers...?

Paul

Red's is under new ownership. Bought out by a younger guy. Seems to be very concientious. Might be worth talking to him and explaining your issues with the T'Bird headers. I suspect he'll listen as he wants to be involved in the Y Block market           

Frank/Rebop

Bristol, In ( by Elkhart)