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Old 11-15-2007, 02:10 PM   #1 (permalink)
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Cam for a 289

I'm rebuilding my 289 and can't decide on a cam for it. The car is a '66/'67 Fairlane and the build will be for street, but I may want to run it down the strip to see what she'll do. I really want good low and mid-range for the street. I was thinking about putting solid lifters in it, but would that mean a lot of adjustment? I was also thinking about a roller cam, but those kits are getting pretty high in price. I have decided to go with '69 351W heads (budgetary purpose) and a Weiand Intake.

So I was looking at these Comp Cams... 280H, XE274H, 282S, & something like a 284HR.

Any suggestions?
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Old 11-15-2007, 05:06 PM   #2 (permalink)
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Re: Cam for a 289

I ran a xe256h cam for a while and it had great low end torque. I am running a milder cam right now for daily driver issues. The cams that you listed as far as I can remember they are great performers. Joe Sherman Racing is very good on advice.
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Old 11-15-2007, 05:47 PM   #3 (permalink)
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Re: Cam for a 289

You must be very carefull when you pick a cam for a small motor like a 289. If the compression is real low ( 9 to one or less )You will hurt your performance with anything bigger than. 260 or 264 duration. Your idea of 351 heads is NOT good because the compression will be less than stock. You need to deck the top of the block and mill your heads to try and raise the compression aS MUCH AS POSSIBLEPick your cam LAst AFTER YOU SEE HOW MUCH COMPRESSION YOU CAN MAKE.

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Old 11-15-2007, 07:26 PM   #4 (permalink)
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Re: Cam for a 289

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Originally Posted by BIGJOE View Post
You must be very carefull when you pick a cam for a small motor like a 289. If the compression is real low ( 9 to one or less )You will hurt your performance with anything bigger than. 260 or 264 duration. Your idea of 351 heads is NOT good because the compression will be less than stock. You need to deck the top of the block and mill your heads to try and raise the compression aS MUCH AS POSSIBLEPick your cam LAst AFTER YOU SEE HOW MUCH COMPRESSION YOU CAN MAKE.

JOE SHERMAN RACING ENGINES


Can't you buy different pistons to increase the comp. ratio and get it close to 10:1-10.5:1 ?
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Old 11-16-2007, 02:56 AM   #5 (permalink)
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Re: Cam for a 289

Yes you can buy pistons.

Bigjoe was just pointing out that there is a substantial compression loss when you install the windsor heads on a 289/302. He did not know if you were going to do a total rebuild or was just trying to slap them on, as others want to.
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Old 11-16-2007, 09:08 AM   #6 (permalink)
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Re: Cam for a 289

I'm a fan of the XE256H for a 289, as was mentioned. It's a good fit for most builds, and it would be what I'd use unless I wanted to go crazy, it's not leaving a whole lot of HP untapped.
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Old 11-16-2007, 09:13 AM   #7 (permalink)
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Re: Cam for a 289

Just an FYI but the 280 magnum and the 274 and their solid counterparts and BIG TIME cams for a small 289. I have heard them idle on small block and it is very raugh and you will need to do a stall speed converter and more to keep it streetable.

That said for a street build i know guys running the XE262H on the 302 289 and its supposed to pull hard at all rpms and retain low end torque. If you go to a 270h or xe268 you need to think about how big do you really want to go.
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Old 11-16-2007, 09:48 AM   #8 (permalink)
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Re: Cam for a 289

You loose about 0.9 points in compression when you switch to those heads. Milling about .035 off of them will restore compression.

The 282S is an excellent cam for a street 289. Cobra Automotive used this cam in their 375 HP 289. For that reason, and based on my own analysis, I chose it for my 331 and I can't say enough about it. It has exceeded my expectations in power and high rpm powerband.

When I was analyzing this cam for a 331, I ran EA 3.0 simulations of a 289 with the 282S and fully ported 351w heads. Simulations indicated 375 HP @ 6500 rpm (same HP as Cobra Automotive although they used different heads). EA 3.0 has been very accurate for me compared to real dyno results.

I have a friend with a '66 289 street motor that has the 294S and professionally ported '66 heads. It makes 395 HP. That's a serious street 289 in my book. I don't recommend the 294S though...282S is big enough and will have better low/mid range.

Ported 351w heads are nice heads for an engine like a 289 that has less air flow requirements than a larger engine. Are you going to port yours?
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Old 11-16-2007, 10:03 AM   #9 (permalink)
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Re: Cam for a 289

Forgot to mention that 26986 beehive valve springs work really well with the 282S...I put them in when I rebuilt my engine early this year.
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'65 Mustang, 331 custom built with 289 H beam rods and 383W piston, 282S cam, self ported '70 351w heads, T5z, 9" w/3.50s.
430 HP @6500
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Old 11-16-2007, 10:19 AM   #10 (permalink)
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Re: Cam for a 289

oops, double post

Last edited by ralphwiggim; 11-16-2007 at 10:21 AM.
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Old 11-16-2007, 10:19 AM   #11 (permalink)
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Re: Cam for a 289

Thanks for all of the info so far.
Well, one of the guys in my dad & uncleís car clubs is helping me with the rebuild. He has done several 289ís. He is going to show me how to self port the heads. I was thinking the solid cam because they sound so great and I hear they have great throttle response. The only thing I was worried about is constantly adjusting the valves. Itís not really going to be a daily driver, so from the sounds of it I wonít have to adjust them all of the time (6k-10k miles?). Iím going with a 4-speed Toploader, so I donít think I need to worry about stall. Since my pistons are going to be replaced anyway, should I just go with higher compression pistons instead of milling the heads?
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Old 11-16-2007, 10:29 AM   #12 (permalink)
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Re: Cam for a 289

Would those springs be any different (better) than using the springs in the comp cam, lifter, and valvetrain kit?
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Old 11-16-2007, 01:56 PM   #13 (permalink)
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Re: Cam for a 289

I have the 282S in my 289 with ported Windsor Jr. heads and a Weiand Xcelerator intake. I'd say if you're looking for streetability and torque, you might want to aim a little lower. My engine REALLY 'turns on' at about 3000rpm, but lowest cruising RPM that it really likes is about 2000, anything lower than that and it starts chugging. A dual plane intake like an RPM or Stealth would probably really help out the low-end, but unless you're planning on running at least 3.73 gears, I'd probably shoot for something just a little more mild.
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Old 11-16-2007, 02:04 PM   #14 (permalink)
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Re: Cam for a 289

Quote:
Originally Posted by Motorhead View Post
I have the 282S in my 289 with ported Windsor Jr. heads and a Weiand Xcelerator intake. I'd say if you're looking for streetability and torque, you might want to aim a little lower. My engine REALLY 'turns on' at about 3000rpm, but lowest cruising RPM that it really likes is about 2000, anything lower than that and it starts chugging. A dual plane intake like an RPM or Stealth would probably really help out the low-end, but unless you're planning on running at least 3.73 gears, I'd probably shoot for something just a little more mild.

270S?
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Old 11-16-2007, 02:07 PM   #15 (permalink)
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Re: Cam for a 289

Quote:
Originally Posted by Motorhead View Post
I have the 282S in my 289 with ported Windsor Jr. heads and a Weiand Xcelerator intake. I'd say if you're looking for streetability and torque, you might want to aim a little lower. My engine REALLY 'turns on' at about 3000rpm, but lowest cruising RPM that it really likes is about 2000, anything lower than that and it starts chugging. A dual plane intake like an RPM or Stealth would probably really help out the low-end, but unless you're planning on running at least 3.73 gears, I'd probably shoot for something just a little more mild.
I am not trying to force my opinion on the cam i have, I just want to provide some additional experience with it.

Motorhead is right about the cam with a single plane...it does definitely take away from low/mid range. Before I rebuilt my engine, I had a Weiand Stealth with the 282S. Low/mid range was quite good even with an automatic before I converted to a T5z.

The 26986 beehives come separately.
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'65 Mustang, 331 custom built with 289 H beam rods and 383W piston, 282S cam, self ported '70 351w heads, T5z, 9" w/3.50s.
430 HP @6500

Last edited by blkfrd; 11-16-2007 at 02:15 PM.
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