Question about my edelbrock heads

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07-08-2009, 08:12 PM

XPBaller

4th Gear Member

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Posts: 1,123

Question about my edelbrock heads

I'm not sure if theyre performers or performer RPMS.

They're ped mount and the numbers "6025" can be found under the valve covers.

I thought the 6025s had 2.02 intake valves, but i measured my intake valve and its a 1.9, but whoever owned the heads last put Ferrea valves in it. Is it possible they downsized the valves for clearance reasons? Is that even possible?

thanks for any help.

07-08-2009, 09:46 PM

94ford5liter

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Location: California

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It is possible the valves were downsized because on a stock bottom end 2.02 doesn't clear without the pistons being notched for clearance.

07-08-2009, 10:57 PM

XPBaller

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Quote:

Originally Posted by 94ford5liter

It is possible the valves were downsized because on a stock bottom end 2.02 doesn't clear without the pistons being notched for clearance.

thats what i was thinking... anyone else have any information on these?

07-09-2009, 12:10 AM

mjr46

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Join Date: Jun 2007

Location: West Virginia

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I didn't think the 2.02 valved heads came in pedastal mount?? who knows....call edelbrock tech line

07-09-2009, 09:29 AM

TrimDrip

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I bought a set of used 6025s about 4 year ago that the 1.90 valves.

Wish I still had them.

09-17-2009, 08:21 AM

93stallion302

3rd Gear Member

Join Date: Nov 2005

Location: Miami Fl

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Yes the older model 6025's had 1.90s in them.

On the newer ones the 6025 has 2.02s,
the 6032 has the 1.90s

Last edited by 93stallion302; 09-17-2009 at 08:24 AM.

09-20-2009, 12:49 AM

clean92lxhatch

Join Date: Sep 2009

Location: georgia

Posts: 2

Performer RPM Ford

Designed for non-emissions 289, 302, and 351-Windsor Ford engines
Maximum performance in the 1500-6500 rpm range for high performance street
1.90" intake valves are for use with stock pistons and high-flow 2.02" intake valves work with pistons notched for valve clearance

Cylinder Head Specifications

Combustion chamber volume 60cc
Intake runner volume 170cc
Exhaust runner volume 60cc
Intake valve diameter 1.90" & 2.02"
Exhaust valve diameter 1.60"
Valve stem diameter 11/32"
Valve guides Manganese bronze
Deck thickness 5/8"
Valve spring diameter 1.46"
Valve spring maximum lift .575"
Rocker stud 3/8"
Guideplate Hardended steel
Pushrod diameter 5/16"
Valve angle 20°
Exhaust port location Stock
Spark plug fitment 14mm x 3/4 reach, gasket seat

Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench #60229
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 72 132 183 216 245 249 244
Exhaust 57 104 142 159 170 174 175

Flow Numbers as tested by Edelbrock's SuperFlo SF-1020 flow bench #60259
Valve Lift .100" .200" .300" .400" .500" .600" .700"
Intake 70 128 183 219 251 255 246
Exhaust 57 104 142 163 170 174 175