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Original Message
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| RE: Performer vs.RPM |
| By Mike McQuesten - 12/16/2001 11:19:13 AM; IP 63.50.108.188 |
You've taken a very logical approach to this T-bird power project Jim. All reasonable quesitons. And I think Bob has given you many good answers. I would like to add just a couple of things.
First, keep the cam mild/reasonable. You mentioned that this is a street performer. I'd recommend two cams, the easiest to get is the Edelbrock Performer. NOT the RPM. The second choice would be an original GT/CJ cam, part# C6OZ-6250-B. No longer available from Ford but it is available from Comp, Crane, etc. in their Muscle Car lines. The Edelbrock Performer cam is very similar in specifications. I personally use the C6OZ-B cam in a '65 390-4V in my '68 F100. It idles great at 550-600 rpm. It pulls very hard all the way to 5,500 rpm if I want to. No need for a higher stall torque convertor with these cam grinds. I have to tell you that I think you'd hate a higher stall torque convertor in your '66 'bird. I've used even mild ones on the street and I don't like them compared to stock. Stock are much more reponsive to initial throttle response from a stop. I just never got used to the initial mushy throttle response with even a mild stall street/strip convertor.
Second, the choice of a Performer RPM. I'm skeptical on this choice over the Edelbrock Performer. Bob seems to think it may be okay and may be he is using or has used one. I haven't used an RPM ....yet. I plan to for a future 428 in the works. Everything I read about the RPM is that it's designed for RPMs. Nothing outrageous, up to 6,500 or so. I have used the Performer. I've said it before and I'll say it again right here....this intake works! It works very well from right off idle, which is what you're going to want with that big 'bird, all the way to 5,500 with no problem. Here's the list of intakes I ran on my 428CJ: '67 Ford C7AE-aluminum PI with original 735 Holley. Of course, this system worked real well. It better! Ford designed it. They chose this intake for the '66-'67 PI 428. I believe those guys in Dearborn knew what they were doing most of the time and this particular set up proved it. Next, I installed a Offenhaeuser dual four with two 500 CFM Edelbrocks. Oh, I did run a 1.12, 600 CFM 4100 Autolite on the PI intake for awhile too. The 3,860 lb. Starliner this engine was running in only ran a tenth slower than with the Holley. As to the Offenhaeuser...it looked really cool. It sucked a lot of gas. Very impressive at car shows. Lots of oohs and ahhs, etc. But it didn't perform as well on the strip as the tried and true PI/Holley 735. Next, I ran a Edelbrock Streetmaster. This was a disaster, not because of intake desgin but because it had been modified and allowed water to leak/get sucked into #1 intake port. Not going into detail on this. That day, I called Jegs and ordered a Edelbrock Performer. I was planning on transplanting this 428 into my '68 F100 at that time and I thought a nice all around intake like the E-brock would do it. It sure did! That intake with an E-brock 750 provided tremendous off idle response and with the particular cam I was running at that time, the Ford Motorsports cam, it pulled strong across the full rpm range to 5,800 without any problem. My actual E.T. went up a tenth or two not for lack of power but because I couldn't get the M & H street slicks to hook-up as well as they had with the other systems. So my long story is summed up: For your app. use the Performer. It's designed for just what you say you want.
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