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Old 09-18-2006, 03:52 PM
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Flat tappet to roller cam

I am trying all angles to gain additional torque and power without going to a 351W in my 87 F150 302 AOD pickup. The engine I have is a flat tappet, can and will a roller cam engine give more power and torque, if so, what engine should I buy that will bolt up to my AOD. I contemplated going with the 351W but too many changes to be done for the EFI. What I am looking for is more torgue for pulling (302s aren't known for torque, I've been told) but I have to try and get the most out of one. Any and all help and info is greatly appreciated. I'm not comfortable with the stroker idea, still a daily driver, nothing wild just some more umph.

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Old 09-18-2006, 04:08 PM
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I don't know why you are not comfortable with it, but for low end torque a stroker kit is almost always the best bang for the buck. 347's are really common and there's no reason to fear them.

swapping to a roller cam does help, but I see it at the end of the list of things to do, not at the beginning.
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Old 09-20-2006, 06:45 PM
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Many Ford cars the same age as your truck had roller 302's. Your block may be compatible with factory roller cams already. The biggest problem may be that too much of a cam change might confuse the computer and make it run badly. Crane makes a computer-compatible cam (pn 364211) that's a little bigger than a stock low-output 302 roller, but smaller than a stock 5.0 Mustang cam. I hear it's similar to a late-'90s Explorer cam. Crane told me it raises the operating range of the LO 302 by about 500rpm. Other companies may have a similar grind.

If you still have single exhaust, freeing it up should help quite a bit. It did on my '88 T-bird, and all I had to do was gut the big single catalyst (it already had dual mufflers). It gave me more power from idle to ~4000rpm, instead of running out of breath at 3500.
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Old 09-21-2006, 09:17 AM
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I'll assume that the engine is now running fine, with that in mind, I would swap the ring and pinion for more pulling power. It is a lot cheaper, and it won't mess with the engine control systems, and it takes a lot less time.
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Old 09-21-2006, 09:22 AM
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truck

What techntool said. the 302 dosen't have the torque a larger eng has. To get a smaller eng to do the job you need a longer stick under the rock,GEAR, in case you don't under stand. the aod should not be in o/d when you are pulling.
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Old 09-21-2006, 04:50 PM
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Flat tappet to roller cam

Thanks for the responses, I really want a 351W but unable to find a donor truck with the essentials to change over hence added expense. My budget won't let me exceed 3 grand, the ring gear & pinion swap may be what I do. The 302 I have has 43,000 miles on it, no problems just no torque. This will ba a project I'll undertake on my vacation the end of next month, along with a lot of honey-dos.
Again, thanks for the great advise and help.
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