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Author Topic:   Best porting info?
d4490
Member
posted October 22, 2002 12:21 PM
Where can a shade tree find the best place to find head porting info (on the net, book store or other)?


340duster
Member
posted October 22, 2002 01:51 PM
Try this
http://www.sa-motorsports.com/diyport.htm


Monster
Member
posted October 23, 2002 10:17 PM
I would recommend "How to build and modify Chevrolet small block v-8 cylinder heads", by David Vizard, pub. Motorbooks Int'l, 1991. It came out at the same time I bought a flowbench, so I used it as a guide for quite a while. Contains a wealth of info, and is directed to a person who does not have a flowbench. Keep this in mind: the easiest places in a port to grind are exactly the places you should not be grinding on. I have seen countless heads ruined by only a few minutes of uncontrolled short side grinding by an amateur. One guy brought me a set of BBC heads to 'finish' that he had 'ported'. He had laid back the short side of the exhaust port so far the heads were ruined, and had even 'ported' the WATER PASSAGES!! Vizard will not lead you astray.


d4490
Member
posted October 24, 2002 06:18 AM
Will Vizards book work for Ford heads also?


Monster
Member
posted October 24, 2002 07:03 AM
In principle, yes. But specific valve job angles and throat treatments need to be tweaked, depending on the head. In fact, at the time I mentioned, Fords were 90% of my business. Which Ford heads did you have in mind? I may be able to help some.


outlawstock17
Member
posted October 24, 2002 07:04 AM
LOL! monster......i wound up with a set of "novice ported" heads that had the water passages ported too! i asked the guy about it and he said it would run cooler! LMAO!

the most gains are in the bowl area under the valves. if you have a good set of heads to start with, a little bowl area clean-up and a gasket match should be plenty. if you don't have a good set of heads, sell them and get a good set. it doesn't matter if they're ford, chevy or whatever........

d4490
Member
posted October 24, 2002 10:37 AM
I have a set of DO0E heads, but might be buying a set of Roush 200 heads. Can't buy a set of N351/N352 heads because my track says we have to run exhaust manifolds.

Also, what are the best manifolds for the Ford 351w?

[This message has been edited by d4490 (edited October 29, 2002).]

outlawstock17
Member
posted October 24, 2002 12:47 PM
the best 351W exhaust manifold is just like the best factory 351W head. 69-70. i can't remember the exact casting number but it will be C9OE or D0OE-something.


Monster
Member
posted October 24, 2002 05:41 PM
We've got our last big race this weekend, but watch this thread, cause when I get back, I'll tell all the good stuff on how to wake up those DOOE's. I have never done any work with cast iron manifolds, but Ford made a set of streamlined cast iron 'headers' for the old hipo 289s. Not been available from factory for many moons, but they are available in repro for a price. Might be worth looking into if the budget allows.


d4490
Member
posted October 24, 2002 05:51 PM
Do you know where I could find these manifolds?


outlawstock17
Member
posted October 24, 2002 07:54 PM
i think so. call keiths ford salvage in tulsa, ok. 918-834-2859. he sells a lot of stuff through the mail and i think he has a set.


SLEEPY GOMEZ
Member
posted October 24, 2002 09:22 PM
Hi D4490, A few years ago I seem to remember finding a set of cast iron exh from an International truck to fit the N heads. I got in the parts book and checked exh gaskets till I got a match. Not an exact match but close enough. This is from memory, the ford project went out the door before it was finished. SLEEPY


outlawstock17
Member
posted October 24, 2002 10:34 PM
d4490, if you're rules say, "no roller rockers". then you can toss sleepys international exhaust manifold idea, although it is creative. the only rocker arm available for an "N" head is a roller.


d4490
Member
posted October 25, 2002 06:15 AM
They opened up our rules this year to basicly an open engine rule. Any cast iron intake, any cast iron heads, any cast iron block, any cast iron exhaust manifold, full rollers (including cam) and no limit on cubes and compression. And they opened us up to use a triple disc clutch. And I bought an aluminum flywheel for last this season. Looks like I'm going to spend more money this year.


d4490
Member
posted October 25, 2002 06:17 AM
Sleepy, thanks for the exhaust manifold info. Did the International manifolds look like they would perform? Can you find any other info on what you used for gaskets?


KSGerry
Member
posted October 25, 2002 08:58 AM
If you are allowed to use any aftermarket cast iron head, you might look at the Pro Action line: http://www.protopline.com Their heads seem to flow better out of the box than many do after a port job. Prices are reasonable too.

Make sure you don't get runners too big for your application. I have a new 18 degree (specially made!) cast iron set to fit a GM smallblock engine that are more appropriate for a larger displacement (around a 410 cid). Never have been installed. They are fitted with titanium valves for lightness. The sanctioning body is thinking of switching to a "spec" aluminum head for 2003. We will be lucky to recoup our cost at $3200. for the pair.

Regards,
Gerry Dedonis
Kansas Racing Products Inc. www.kansasracingproducts.com

------------------
KSGerry


d4490
Member
posted October 25, 2002 12:52 PM
The last time I checked the Pro Line stuff, they did not have a Ford head yet.


d4490
Member
posted November 01, 2002 02:41 PM
Anybody else have any good info?


dean_7585
Member
posted November 01, 2002 07:03 PM
Junk the Ford !! Get a Chevy !! Cheaper !! Easy !!


dirtracer7
Member
posted November 02, 2002 11:11 AM
C90e-8480-a and d00e-9481-b are what I'm running on my 347.I think there might be a better right side manifold but i"m not sure.There is also a reprodution of these late sixties/early seventies manifolds.Standard abrasives has info on head porting I havn't had a cance to read yet.I'm running windsor jr. heads that have been gasket matched and bowls and casting flasing cleaned up.As for junking the Ford my low buck 347 kicks but on all but the big dollar 400's at my local 5/8 mile clay track so keep racing your blue oval.If your running cast iron intake theres your problem Ford didn't make any good intakes for 302 or 351. So get your die grinder out and cleanit up.World produts tech line told me that the jrs. would work just fine because the bigger valved 200s have larger chambers (lower compression if your rinnig flat tops )and my restriction would be in the intake and exhaust not heads.Thats if you have the all cast iron rule.


outlawstock17
Member
posted November 02, 2002 06:56 PM
you go dirtracer! a 347 ford has a HUGE weight advantage(75lbs.) over a small block chevrolet. you're right on the manifolds though. they are the biggest restriction. i could never get more than 6600 rpm with the cast iron intake.

i think you have the correct exhaust manifolds. i had a set that came off a 1970 mustang with a 351w and it also had one C9OE casting and one D0OE casting.

due to the popularity of the mustang GT, ford parts are getting cheaper by the day.



KSGerry
Member
posted November 05, 2002 02:15 PM
quote:
Originally posted by d4490:
The last time I checked the Pro Line stuff, they did not have a Ford head yet.

I checked the Pro topline website and they are now offering cylinder heads for Fords.

Pro Action line: http://www.protopline.com

Regards,
Gerry Dedonis
Kansas Racing Products Inc. www.kansasracingproducts.com

------------------
KSGerry


Monster
Member
posted November 05, 2002 06:05 PM
Hang in there for the DOOE porting info, I am trying to get some pictures taken and posted to my website that will help things out. For those that asked about our race, we towed 3 hrs, then watched it rain for 3 days. Car never left the trailer, tire bill was minimal, bar tab was huge!


d4490
Member
posted November 06, 2002 06:34 AM
KSGERRY,

I also looked on their web site, they are currently only offering stock replacement heads, not a racing version. I will keep my eye on the site to see if they produce a race head.

moedemarcus
Member
posted November 14, 2002 12:04 AM
Try running 94to96 351truck exhaust manifolds. they have 2 1/4 dumps. There the biggest cast manifolds i,ve found.


d4490
Member
posted November 20, 2002 01:59 PM
Any one else?


d4490
Member
posted December 03, 2002 06:32 AM
Monster, Any Info?


dirtracer7
Member
posted December 04, 2002 07:09 AM
I don't know if you want to spend the bucks but theres a place that sells factory cnc ported heads and I think they run about 650.00 a pair.They advertise in circle track and they are called power heads. " TARGET=_blank>www.powerheads.com

[This message has been edited by dirtracer7 (edited December 04, 2002).]

moedemarcus
Member
posted December 21, 2002 05:46 PM
The www.racingsecrets.com info has to be bought, is it any good?


Monster
Member
posted January 06, 2003 08:09 PM
OK, I finally got the photos taken and descriptions written. I think I covered most of it. If you have any questions let me know.
For those that don't remember, this is for porting SBF heads, like 289/5.0/351W.
Here's the link.
Mark
http://www.workmonster.com/


d4490
Member
posted January 08, 2003 12:33 PM
Thanks for the info every one.


moedemarcus
Member
posted January 08, 2003 06:23 PM
www.racingsecrets.net , head porting secrets link


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