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Old 07-13-2007, 01:07 PM
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Some help with a 302 build

I have most of this thing planned out. I'm putting this in a Pinto which weighs around 2200 or so give or take, and will be a occasional street driven car, and spend it's weekends on the strip. Won't be spun past 6k.

Here's the deets.

'78 block bored .030 over
Stock crank / rods
Speedpro Hypo flat tops
E7 heads moderate porting work, stock valve size
Weiand Stealth dual plane intake (1500-6200)
I was thinking the TCI 2400 stall converter, haven't ordered it yet.
C4 auto
8"rear with 3.80:1 gears and a 26" tire

For a cam I was thinking something in the 225-230 duration (@ 0.050) and .500 - .510 lift. Maybe a split profile cam since I heard they work well in the SBF. This choice make sense?

Thanks in advance.

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Old 07-13-2007, 02:54 PM
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Cam for 302 Ford

Check out this part# at( Summitracing.com) CRN-363522 with the heads and pistons you are running this should be right on the money, no clearance issues,also you want that extra exhaust duration to overcome the limited flow on the exhaust side of these heads.
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Old 07-13-2007, 03:21 PM
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Although I've built a few small block Fords, I'm mostly a small block Chevy guy. I will, however, throw in my 2 cents worth.

This post is not meant to bag on you or any parts you have chosen to use. It's just an observation. We all have to use the stuff we have on hand to work with, particularly if we are budget limited like me.

I will, however, bag on Ford. In my opinion, the small block OEM heads are the worst abortion anyone has ever cast up in metal. I have ground on 'em, installed bigger valves and done everything but bark at the moon in an effort to coax performance out of these slugs, to no avail. In my opinion, they are good for nothing but to carry grandma to bingo and I'm not convinced they do an exemplary job at that.

Your motor is a 306. My motor is a 355. Depending on how you look at it, my motor is 16% larger or yours is 16% smaller. The heads you will use have 124 cc intake runners, my heads have 180 cc runners, just a street motor. If my heads were the same relative runner size as yours for the cubic inches involved, they'd be 155 cc's and I wouldn't expect much from them except to get me back and forth to the grocery. On the flip side, if your heads had 144 cc runners, I'd expect the same relative performance from them as I would the 180's on my 355. This isn't very scientific, but I'm just trying to get across to you that the OEM Ford heads may not give you the performance your are expecting. Don't throw rocks at me, I'm only trying to help.

O.K., now to your combo. I think you're on the money with the cam choice. Good power from 3,000 to 6,000 using 9.5 to 11.0 static compression ratio, although I would call and talk to the tech guy at my favorite cam grinder before making the final choice and layin' down my long green.
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Old 07-14-2007, 01:58 AM
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302 Build

TechInspector is right on,the stock heads leave a lot to be desired.If you haven't done any work on them yet spend a few bucks and get something better.World has a Windsor Jr out now that is a good way to go,since you are going to street the car 170-180 runners would be best, also if you get these heads complete, you will have the proper valve gear to handle the cam I recomended.As far as the Converter goes check out the guys at Roadrunner Converters here in Phoenix,they are great folks and the $$ they can save you can go towards the new heads.
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Old 07-14-2007, 11:11 AM
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small block ford heads

teckinspector you are getting a bit carried away with your criticisms of the heads, the early heads with chevy style rockers(289)can be massaged to do a decent job,i amrunning a set with 351 valves trimmed at rocker end to use non rail rockers. also un shrouding the intake aria of the chambers. the big weakness with them was ex ports but a little hard work they work well. after all we are talking a 302 cu in engine in my case not a dragster just a nice street machine with decent torque,with a c6 trans with a shift kit i have no problem with 305 chevs, a little lit for the 327s. but i am talking street use where drivability is important.i know many roders who go way off the deep end with the end result suitable for the strip only. wher i am coming from is most of this work can be performed in the home shop at a cost that is not breking the bank. cliff
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Old 07-14-2007, 01:09 PM
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Some of the best small block Ford heads would be the early 351W heads. They had bigger valves and ports than the early 289/302 heads. You can grind the thermactor bump out of the exhaust side and clean the ports up. This still doesn't make it a great head but not a bad head. A knowledgeable porter can make this head flow fairly well.

Danny
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Old 07-14-2007, 02:42 PM
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I hear you on the heads. Unfortunately my budget doesn't allow me to go crazy on a set of heads, (I'm fixing up a PINTO for crying out loud!!! ) although I'd love to. For now I'm gonna do the best I can with what I can afford. Over the next winter when I have more money, I can then get a nice pair of heads, maybe more cam etc.

Thanks for all the advice. It's appreciated.

Mr.Pinto
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Old 07-14-2007, 02:59 PM
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The way suggested is the way I build my SBF Fords..If one can accept the fact he is going to run out of wind at somewhere about 6000/6500 you will be fine..If one wants/needs more get some good heads from Roush or Ford performance. The new heads incorporate some very razoo tech to make them work well..

Sam
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Old 07-14-2007, 04:36 PM
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Quote:
Originally Posted by cliff tate
teckinspector you are getting a bit carried away with your criticisms of the heads, the early heads with chevy style rockers(289)can be massaged to do a decent job,i amrunning a set with 351 valves trimmed at rocker end to use non rail rockers. also un shrouding the intake aria of the chambers. the big weakness with them was ex ports but a little hard work they work well. after all we are talking a 302 cu in engine in my case not a dragster just a nice street machine with decent torque,with a c6 trans with a shift kit i have no problem with 305 chevs, a little lit for the 327s. but i am talking street use where drivability is important.i know many roders who go way off the deep end with the end result suitable for the strip only. wher i am coming from is most of this work can be performed in the home shop at a cost that is not breking the bank. cliff
My apologies. Didn't mean to step on your toes. Opinions are like belly buttons, everyone has one. But again, in my humble opinion, anyone who owns a set of OEM small block Ford heads should also have access to a band saw, so he can cut them up into 1" thick slabs and make some dandy paperweights while waiting for UPS to deliver some valid players. Or you could market them on ebay as bench weights to use with the magnetic base of your dial indicator. If you don't have access to a band saw, you could stand 'em on end and bury them about a quarter of the way in the front yard and plant flowers in the ports.

I'm just having fun with you guys, don't take life too seriously. Laugh once in a while and enjoy.

Last edited by techinspector1; 07-14-2007 at 06:41 PM.
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