OK. Between this forum, and some other inline forums available I've read my fill of threads about increasing power in the 300 with little or no useful information.

I want to do an actual analysis of the engine and what mods will produce what results. After an analysis, baseline and finished dyno runs, I will be able to say, with confidence just exactly what I am able to accomplish.

So, now my question. Does anyone have the cylinder head profile (flow) numbers available for a stock 300 head? I know I could get my cylinder head tested at a shop, but i don't really want to pull it off, until I've establish a plan and some goals.

Thanks.

 

these are from fordsix.com on a carbed motor. I'm told that the EFI head is worse. pi$$ poor, if you ask me...

http://www.bigblocksix.com//Wildjon3...00Flow%23s.jpg

and here's a dyno run from a stock 300:

http://www.bigblocksix.com/dyno_runs/stock.png

 

F-L

You've Not read my threads on My built 300 I-6 if you make this statement.

Here's what's been done!

Ross Pistons 4.060
Hastings Power Flex Rings .060
Federal Mogul Mains .020 Under
Clevite Performance Bearings Std.
Federal Mogul Cam Bearings Std.
Melling Torque Cam
Melling H.V. Oli Pump
Eagle H-beam Rods 6.300 2.100 Rod Journal
Crane Gold Race Roller rockers
ARP Main Stud Kit, Rocker Studs,
Fisher International Ballancer
Bore 4.060
Power Hone 4.060
Full P&P Intake & Exhaust
Performance valve job
Performance Balance job on Steele Crank w/ in 7 grams
Grind Rod Journals to 2.100
Plumb Intake for Heat via Water Pump
Deck Block to Square
Align hone to Factory specs
Deck block for Zero Deck
Offenhauser C Intake
Holley 1850 600 CFM
S.S. Borla 2 into 2 Header

300 H.P. @ 4600 rpm & 400 Torque @ 3200 rpm w/ a 10 to 1 C.R.
It idels @ 675 & is smooth as glass, a quarter was placed on top of the Valve Cover & it Did Not move Nor rattle.

Here's the Dyno

*A look at the dyno sheet or at least a list of the hp and tq numbers in 500 rpm increments from 1000 rpm to 5000.

"The numbers start @ 3000 & stop @ 4600 on the print out."
RPM SF-TQ SF-HP
3000 397.7 237.6
3500 397.8 264.6
4000 381.9 288.8
4500 351.4 297.7

*Why they opted for the 6.3 rod (stock 300 is 6.2097"), instead of going directly for the 240 rod (6.7947"), which would have given a more desirable rod ratio.

Rod Angle was @ criticle.

*Is there any flow data for the ported head?

NO, Not Available

*Were stock valve sizes used?

NO, Oversize Swirl Pattern S.S.

*What brand pistons were used, if possible what was the part number?

Ross custom made.

*How was the camshaft installed: straight up, advanced or retarded?

2* advanced

*Was the crank offset ground? If so, what is the final stroke of the crank?

NO, 20/1000s under 4" arm as is.


And here's pix of her if you Scroll down.
https://www.ford-trucks.com/forums/s...light=Flashman

 

He wants to know what the heads flow, not what parts to throw at it.

There was a post a while back (a year or two) that had head flow numbers in it. The only problem was that they were flowed at 10" of depression (or something like that) instead of the industry standard 28". That means the data might not be useful. Don't remember if it was an EFI or carb head.

 

Col,

Thanks. You're right, I did not see your posts in my searches. I knew that you had some background from seeing comments you'd made in some other threads.

I believe that the next time I go to Tulsa, I'll be contacting 6bangerbill, to get a look at his FS1 head.

 

I know have received some theoretical flows (from DD2000 prints). I can do some rudimentary calculations with those numbers, but may have to breakdown and get a head flow tested for the real deal.

 

S.S.

That's quite interesting seen as How his Post after yours seems to come across that I was actually of some help to him, don'tcha know, the Build part.

 

S.S. and Col....

The way I read the second paragraph of his first posting is that he wants to know WHAT parts will produce WHAT results individually. This is just my interpretation of what F-Liner put down.

Also, on another note, I seem to see you two throwing flames at each other just about every day that I log onto the forums, and frankly, it bores me. I don't care "who started it", I just find it somewhat childish and boring. Unless of course I'm in one of those moods that everything ends up seeming funny to me.

Myself, I'm here to gather information on how to build my engine to suit the needs I have for my truck. I plan to drop it into an 83 F-250 4x4, eventually putting a ZF 5 spd behind it with 3.73 gearing front and rear. The engine itself will be set up with a holley 390 4bbl, offy DP intake, EFI manifolds, true dual 2 1/4" pipes into a pair of 40 series flowmaster mufflers, crane 260/272 duration cam, steel timing gears, pre-smog pistons, have the block decked .010, a mild port and polish job on the head, small block chevy valves with heavier springs, and duraspark II ignition system.

anyway, that's where i sit, and that's what i think and know and all that good stuff....talk to ya'll later...

MontanaFord

 

Oh, hey...Col...just a curiousity question...how much cash u got wrapped up in your 300, from air cleaner to oil pan? just wonderin...

MontanaFord

 

M.F.

Ah, Oh, Hmmmmm, I don't know, 42 & change, don'tcha know.

And about S.S., I don't know about him but I believe he's rather fun.

 

Is the $42 HUNDRED? ($4,200.00)

 

 

How much CFM of air does the EFI move.

if this question makes no sense i cant help it im not a fuel injection wizard...yet i drive one...

 

I guess I overreacted a bit in this thread. As was previously stated, it gets boring reading the same thing over and over again. I was bored with reading basically this statement:

over and over in threads where it had little to do with the topic. Kinda the same way I get tired of seeing the question "How do I make more power in my 300" every week even though there's a sticky at the top dedicated to the topic.

 

yeah i see that too. its dumb. that 5 page sticky has every upgrade needed for the 300 in it.