Scott Vincent Heads Flowed?

[DuckRyder]

Scott Vincent was active on TOF in the 2000's, it looks as if he last posted anything in 2015 or so.

I have a set of C8AE-H heads with Cobra Jet sized back cut valves he ported. I'm wondering if anyone has flowed a similar set?

This is really all i can find for numbers anymore.

http://users.erols.com/srweiss/tablehdc.htm#Ford_Big_Block

Just wondering if it is worth going to some newer AL heads for a street engine.

[frnkeore]

Here is my take on it:

Based on what he did with the C1 heads and what Steven Magnotti did with the C8-H heads, I would say that your in the 270-275 cfm range, at best.

270 cfm is about the best you can expect from OOB Edelbrock 2.09/1.65 with a good VJ.

So, it's only a weight issue for those but, you can pick up a lot of hp with TFS or Blair built BBM's.

I would try to find someone to flow your heads and see what you actually have. Please report back if you do.

[blykins]

Scott Vincent was active on TOF in the 2000's, it looks as if he last posted anything in 2015 or so.

I have a set of C8AE-H heads with Cobra Jet sized back cut valves he ported. I'm wondering if anyone has flowed a similar set?

This is really all i can find for numbers anymore.

http://users.erols.com/srweiss/tablehdc.htm#Ford_Big_Block

Just wondering if it is worth going to some newer AL heads for a street engine.

Man, I haven't heard that name in about 18 years.  Does anyone know if he's doing ok?

[DuckRyder]

I used to get Christmas cards from him every year, then life got in the way and we stopped sending cards, and his eventually quit coming, it's been quite a few years.

[351crules]

what is TOF

[Joe-JDC]

The Old Forum.  Old 54 FE forum became very biased and opinionated, had many folks posting that were computer jockeys with very limited knowledge of the FE.  Many old timers left due to the squabbles and a few folks posting on every question or answer.  JMO.  Joe-JDC

[428kidd]

Alot of the trouble makers are gone now. No more opinionated and biased than anyone else  on any other forums.

[DuckRyder]

what is TOF

The Other Forum - Joe is correct the old network 54 forum now on tapatalk.

Frank - Thank you i do recall some folks saying that they might be about as good as out of the box e heads. No issue with the heads except they chambers came out small (NOT Scotts fault.) and they are timing sensitive. Looking to do a hyd roller so was hoping to get an idea where i am.

If i take them off i'm not opposed to flowing them for science.

[frnkeore]

If your going to replace the cam, you can probably address the timing issue with a later IVC.

How big is the engine and what's the CR or, what to the heads cc at?

[DuckRyder]

If your going to replace the cam, you can probably address the timing issue with a later IVC.

I was thinking similarly..

How big is the engine and what's the CR or, what to the heads cc at?

It is a 445, the heads cc ar 66 (one was barely 66 so call it 65/66) I make the static at about 10.6:1.

Has this Cam, installed at at 110 ICL (not 106)

https://crower.com/printcamcard/?part_num=16462&x=0&y=0

[frnkeore]

I ran a few number and you will need at least a 22cc piston dish to get it in the pump gas range.

A better estimate can be done if we know the deck clearance, head gasket and what ever the piston cc is.

[DuckRyder]

I'll have to go back trough my conversations, but its a standard 445 Scat kit with the Mahle dished pistons. i did the calculation and it was 10.6:1 using the 8445 felpro head gaskets.

Probably should have listened to ross and changed the cam back then but i needed it moving under its own power...

[frnkeore]

Did you mean the head gasket is a 8554 PT FelPro?

I ran your numbers using a standard Scat/Mahle 18cc piston (H beam rod piston) with 0.00 deck clearance and 65.5cc heads and only got 10.36 CR with the 8554 gasket. They are 12.7cc.

With your, 70° IVC, it puts you at 7.95 DCR, a bit out of the 92/93 oct gas range for your 280 cam, you could try reducing the lash to .018. That will give you a little later IVC and see if that helps any.

If you change cams, you'll need to go to at least a 284 duration on a 110 ICL. A custom cam something like a 284-6/294, 114 LSA/110 ICL with mild lobes. Howards has lobes that would fit nicely in that range.

[blykins]

What are the issues you're having with the timing?  That combination should run just fine on 93 octane, unless it's being lugged in a truck/heavy car application. 

[DuckRyder]

Did you mean the head gasket is a 8554 PT FelPro?

I ran your numbers using a standard Scat/Mahle 18cc piston (H beam rod piston) with 0.00 deck clearance and 65.5cc heads and only got 10.36 CR with the 8554 gasket. They are 12.7cc.

Yes that's what i meant. Back to i really need to start writing things down but i swear i got more than 10.36.

With your, 70° IVC, it puts you at 7.95 DCR, a bit out of the 92/93 oct gas range for your 280 cam, you could try reducing the lash to .018. That will give you a little later IVC and see if that helps any.

If you change cams, you'll need to go to at least a 284 duration on a 110 ICL. A custom cam something like a 284-6/294, 114 LSA/110 ICL with mild lobes. Howards has lobes that would fit nicely in that range.

I don't hate this cam, but i feel its needlessly hard on valve train and id like a bit lower idle and more idle vacuum. Which may be opposed to decreasing DCR. When i bought it there were limited HYD rollers on the market and flat tappets were wiping right and left. In fact it wiped a Crane 801 when it was a 360. Anyhow.

Gotta get back in my notes.

What are the issues you're having with the timing?  That combination should run just fine on 93 octane, unless it's being lugged in a truck/heavy car application. 

It's in an F100 long bed, automatic and 3.50 gears with fairly small tires (215/75/15). It wont take more than 35/36 degrees without pinging. But in retrospect i need to make sure im accounting for the ATI damper being historically off.