Potential of ported Edelbrock Performer RPM’s 6025’s
Moderator: Team
-
- Pro
- Posts: 217
- Joined: Sat Mar 08, 2014 12:35 pm
- Location:
Potential of ported Edelbrock Performer RPM’s 6025’s
I’d like to try and find how these where ported. I picked up a set of Edlebrock Performer RPMs when I bought a 91 Mustang last month and am curious if the port work done looks good. I didn’t pay much attention to them until I noticed that they milled them below the intake valve and now am curious to find out what type of springs they have and what potential they have on an NA 317” Ford
You do not have the required permissions to view the files attached to this post.
-
- Pro
- Posts: 217
- Joined: Sat Mar 08, 2014 12:35 pm
- Location:
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
Exhaust
You do not have the required permissions to view the files attached to this post.
Last edited by thomas butt on Mon Apr 09, 2018 9:58 pm, edited 1 time in total.
-
- Pro
- Posts: 217
- Joined: Sat Mar 08, 2014 12:35 pm
- Location:
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
More pics. The intake port is 1.1”x2.0”. It looks like they concentrated on the bowl.
You do not have the required permissions to view the files attached to this post.
-
- Pro
- Posts: 217
- Joined: Sat Mar 08, 2014 12:35 pm
- Location:
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
Milled a lot? Looks like they might have...
You do not have the required permissions to view the files attached to this post.
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
That looks like more of a sand roll than any actual porting. The valve job and chamber needs attention IMO.
Pete Graves
CPMotorworks,Inc.
Custom Engine Machining
Cylinder Head Fixture for Vertical / Surfacing Mills since 2008
CPMotorworks,Inc.
Custom Engine Machining
Cylinder Head Fixture for Vertical / Surfacing Mills since 2008
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
There good for about 550 HP if ported correctly. 270 cfm with about 175-180 cc runner. Biggest gains is sizing Intake bowl to the valve if it has a 2.02 as it is the same size on the 1.90 and 2.02 head ,just the seat cut bigger, Working the Short Turn and doing the chambers is your biggest gains. Any casting flash removed will help. Small cam back cut the valve. I own two sets of them heads. Looks like adding the 2.02 valve and bowl work wont be possible, looks like the seats been milled too far!
-
- Pro
- Posts: 217
- Joined: Sat Mar 08, 2014 12:35 pm
- Location:
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
Ok. Good to know. I measured the intake and it was 2.02”. I have never had these heads before so don’t know what to look for. Can you tell what type of spring they used? How much do you think they were milled?NXBOY wrote: ↑Mon Apr 09, 2018 10:36 pm There good for about 550 HP if ported correctly. 270 cfm with about 175-180 cc runner. Biggest gains is sizing Intake bowl to the valve if it has a 2.02 as it is the same size on the 1.90 and 2.02 head ,just the seat cut bigger, Working the Short Turn and doing the chambers is your biggest gains. Any casting flash removed will help. Small cam back cut the valve. I own two sets of them heads. Looks like adding the 2.02 valve and bowl work wont be possible, looks like the seats been milled too far!
-
- Pro
- Posts: 217
- Joined: Sat Mar 08, 2014 12:35 pm
- Location:
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
....good to know. Here is another of the chamber
You do not have the required permissions to view the files attached to this post.
-
- Guru
- Posts: 4603
- Joined: Sun Sep 18, 2011 11:31 am
- Location: Heading for a bang up with Andromeda as we all are.
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
I have seen many a darn good looking port polished up at home that flowed less then out of the box!
Get it flow tested or if you build with them you will have no base line to judge from!
Get it flow tested or if you build with them you will have no base line to judge from!
You can cut a man's tongue from his mouth, but that does not mean he’s a liar, it just shows that you fear the truth he might speak about you!
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
or at least knock down the huge ridge into the combustion chamber. or new seats with a favorable top cut
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
I see rust on those springs. They need to be junked!
Servedio Cylinder Head Development
631-816-4911
9:00am - 9:00pm EST
631-816-4911
9:00am - 9:00pm EST
-
- Guru
- Posts: 1980
- Joined: Sat Mar 08, 2008 3:08 pm
- Location: Minneapolis
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
No doubt.
What's with the big gash, if that's what it is?.. in the fire deck above the intake valve? Weird place for chewed up valve bits to be banging around outside of the head gsskets fire ring and I'd guess severe overheated detonation after the fire ring lost it's battle. Probably also the reason they milled it so much too. Time to break out the welder, imo.
Last edited by groberts101 on Tue Apr 10, 2018 10:15 am, edited 1 time in total.
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
its a sigh groove..lolgroberts101 wrote: ↑Tue Apr 10, 2018 10:11 amNo doubt.
What's with the big gash, if that's what it is?.. in the fire deck above the intake valve?
-
- Guru
- Posts: 1980
- Joined: Sat Mar 08, 2008 3:08 pm
- Location: Minneapolis
Re: Potential of ported Edelbrock Performer RPM’s 6025’s
Why do you say that? Because you "sigh" everytime yiu see one? LOLMTENGINES wrote: ↑Tue Apr 10, 2018 10:11 amits a sigh groove..lolgroberts101 wrote: ↑Tue Apr 10, 2018 10:11 amNo doubt.
What's with the big gash, if that's what it is?.. in the fire deck above the intake valve?