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Re: Some info on the RHS cast iron heads plus port work... [Re: S/ST 3040] #529466
11/20/09 05:04 PM
11/20/09 05:04 PM
Joined: Jan 2003
Posts: 5,487
SoCal
Brian Hafliger Offline OP
master
Brian Hafliger  Offline OP
master

Joined: Jan 2003
Posts: 5,487
SoCal
Quote:

You didn't post the ported numbers without the intake.




I did, just not here! I posted them in the Q&A section:
Before After
Int. Ex. Int. Ex.
100 70 58 70 60
200 134 110 137 116
300 178 150 201 155
400 225 178 250 183
500 247 188 279 198
550 246 191 281 203

Ex. was flowed with a 1 3/4 pipe both before and after.
I did no port work to the actual ex. port at all! All seat and slight bowl work and no chamber work.

I didn't really sink them much, only .025 so I'd say maybe .75 cc.

Before flow #'s were with stock Magnum valves, and a backcut on the intake.


Brian Hafliger
Re: Some info on the RHS cast iron heads plus port work... [Re: Brian Hafliger] #529467
11/20/09 05:27 PM
11/20/09 05:27 PM
Joined: Mar 2005
Posts: 792
Earth
R
Rob C Offline
super stock
Rob C  Offline
super stock
R

Joined: Mar 2005
Posts: 792
Earth
Well, the numbers of the head, ported, may be on the light side, but I still see a good performing engine. Maybe not to it's ultra max. potentail, but it outta rip up streets preety well.

Thanks for the Q & A volley.

Re: Some info on the RHS cast iron heads plus port work... [Re: Rob C] #529468
11/21/09 01:48 AM
11/21/09 01:48 AM
Joined: Sep 2007
Posts: 576
Escondido, CA
kick_the_reverb Offline
mopar
kick_the_reverb  Offline
mopar

Joined: Sep 2007
Posts: 576
Escondido, CA
Brian, do you have any data from your bench on the EQ heads? Would be beneficial to those debating between the RHS and the EQ.

Thanks
Ran


"Hey mister, something's wrong with your car, it idles roughly" - number one comment I got in Israel when daily driving a 70 Barracuda with a lopey cam.

Currently working on - 1966 Dodge A100 van 318/auto
Finally - disc brakes on the front.
In the plans - rear disc brakes, B&M 250 blower
Re: Some info on the RHS cast iron heads plus port work... [Re: kick_the_reverb] #529469
11/21/09 02:03 PM
11/21/09 02:03 PM
Joined: Jan 2003
Posts: 5,487
SoCal
Brian Hafliger Offline OP
master
Brian Hafliger  Offline OP
master

Joined: Jan 2003
Posts: 5,487
SoCal
Quote:

Brian, do you have any data from your bench on the EQ heads? Would be beneficial to those debating between the RHS and the EQ.

Thanks
Ran




The Magnum EQ head flowed 240cfm at .500 and .550. That was just an OEM replacement head with stock valves.
I have not flowed an early head yet. Most of my customers just use edelbrock heads.


Brian Hafliger
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