An upcoming engine build....and a little game...

[undy]

Even modified factory HP heads are not going to yield huge CFM numbers so it's probably a smaller ci engine. As said before, probably a spec racer. 331 or a 347 would be my guess.

For an all out SBF "REAL" race motor there are heads out there with ports that those factory heads would fit in ... well ... almost.

[DWRAT]

292 ci
443 hp

[xb-60]

I agree on capacity being 289ci
It will be a 'revver'
Webers
440hp

Cheers,
Glen

[MAStuart]

I think a long rod 289 plus that it takes to clean up the block. Spin it hard and the numbers should go up. If they could get 390 hp in the 60's and keep them together. With todays cams and todays porting I think 550 hp.

Mark

[jhirasak]

From the information provided, we have a high budget 289 based race engine with 1965 HP cast iron FoMoCo heads, flat top pistons, long rods, and Webers. Assuming that it is limited to vintage specs regarding displacement, I would guess the following:

292 cu in displacement
485 HP

John

[Ivygreen65]

The heads are December 64 cast standard 289 heads, not hipo heads (no cast spring pockets, not 2 dots over the cast 289). They look to have been tapped for screw-in studs, but don't appear to have been ported on the exhaust side, which is the first place you want to enhance flow. Unless there's more to these heads than what I'm seeing, I don't see them making a lot of power, which makes the Weber set-up odd since this is apparently a well thought out power plant. Maybe a FIA legal motor for vintage racing across the pond.

CI = 289
HP = 345

[blykins]

A couple of notes on that....

1. Don't always assume that since a port doesn't *look* to have been modified....that it's not.

2. I didn't say that the heads and intake have been worked yet. As a matter of fact, the only work that has been done so far is the installation of bronze guides and the rocker stud holes have been tapped.

[Jac Mac]

Originally Posted by blykins

A couple of notes on that....

1. Don't always assume that since a port doesn't *look* to have been modified....that it's not.

2. I didn't say that the heads and intake have been worked yet. As a matter of fact, the only work that has been done so far is the installation of bronze guides and the rocker stud holes have been tapped.

Hmmm, I wonder if a name like Brzezinski or someone who performs similar work might be involved in the Cyl Head prep, maybe not as the guides might need to be removed for that.

[Dimis]

Vintage cobra 289 race engine perhaps... with low rotational weight, for super speedy acceleration and high revving engine - Say maybe 7200 rpm. On your dyno 498 hp at say 6400 rpm.

[Bernica]

Starting to agree with the guys here on 289-302 level with all the good stuff.
Just please don't paint it orange!

[legenmetals]

1. 289 C.I.
2. 505 H.P.

I would never spend 25K on a stock cast Iron head engine build unless I was forced by class rules. So I'm thinking F.I.A.

Webers mean quick throttle response... I'm guessing 1.9 rod ratio (better exhaust evacuation) will need tuned exhaust.

Cam selection will be tricky. This will be a fun thread.

I'm guessing race Cobra.

[Jac Mac]

I'm gonna shut up & watch now, I think I have just clicked on where this motors going...

[MAStuart]

I am thinking north of 8000. In the 70's I had a 289 falcon 4 speed 489 rear gears on the street that I turned 8000+ daily.



Mark

[xb-60]

Originally Posted by MAStuart

I am thinking north of 8000. In the 70's I had a 289 falcon 4 speed 489 rear gears on the street that I turned 8000+ daily.

Mark

Mark, just hijacking for a minute....what was it like to drive? That is the sort of engine that I would really like in my FIA, one that revs to the moon. So what if it hasn't got much at all down low so long as it's not so lumpy that you can't drive it. Recollections, please?

Cheers,
Glen

[blykins]

Originally Posted by legenmetals

1. 289 C.I.
2. 505 H.P.

I would never spend 25K on a stock cast Iron head engine build unless I was forced by class rules. So I'm thinking F.I.A.

Webers mean quick throttle response... I'm guessing 1.9 rod ratio (better exhaust evacuation) will need tuned exhaust.

Cam selection will be tricky. This will be a fun thread.

I'm guessing race Cobra.

I think I can give a few more details about the high cost of the engine without giving unnecessary hints.

1. Factory rocker arms...cryogenically treated and REM polished.
2. Tool steel lifters.
3. Nitrided flat tappet camshaft.
4. LOTS of block preparation.
5. LOTS of head/intake work and over $1200 in just valves alone.
6. Forged crankshaft.
7. Coated bearings.
8. Of course, Weber setups are not cheap.

I don't see anything wrong with allowing guessers to go back and edit their initial guesses, but I will probably implicate a deadline later on down the road.

[Tommy]

It's your game, but I suggest any edits be done by adding the new guess with the date. That way you can use the earliest date as a tie breaker if needed.

[1795]

Not as knowledgeable as many others in this post, but based upon what I have been seeing so far I am going with an FIA build. It is a 289 and will be pushing 550 HP with about a 7500 rpm redline.

[blykins]

Originally Posted by Tommy

It's your game, but I suggest any edits be done by adding the new guess with the date. That way you can use the earliest date as a tie breaker if needed.

Good idea tommy....everybody do like tommy says.

[legenmetals]

Looks like all the good stuff.... except for maybe the prepped stock rockers.(dictated by rules).

Looks to be a high revving motor w/light parts.

A motor that will need a lot of porting (leaning toward more velocity than c.f.m.)

Deep eyebrows on top of the pistons (high lift cam)

Lots of block work.... Now that sounds like a clue. Something more than the usual?

[blykins]

Definitely not high lift....

The block work really wasn't a clue, but just listing the things that contributed to a higher engine cost. Aftermarket main caps, lifter bore bushings, little bit of this, little bit of that.....