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Author
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Topic: 2.02 valves on stock motor?
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88gt
Custom
Member # 579
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posted
 
 
Will Edelbrock performer RPM heads with 2.02 valves clear the stock pistons on my 5.0? I don't think they do, but thought i'd check anyways.
Posts: 1482 | From: Santa Clara/Bay area | Registered: Nov 2001
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Stimson
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Member # 51
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posted
Even if they did, I wouldn't install them ![[Wink]](wink.gif)
I think they clear the stock cam&rockers, but thats about it.
[ August 29, 2002, 02:21 PM: Message edited by: st5150 ]
Posts: 2373 | Registered: Jun 2000
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88gt
Custom
Member # 579
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posted
Let's say I get a killer deal on these heads, already ported, brand new...you still think it's not a good idea. I know they're not AFR's. Do you think they'd clear a cam like Aaron's? Basically i just want to know why you don't think they're a good idea. I'm out of town so won't be on IM till tomorrow or saturday.
Posts: 1482 | From: Santa Clara/Bay area | Registered: Nov 2001
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Stimson
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Member # 51
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posted
Max max ported they flow only 260cfm or so. If I remember right, John91coupe had a pair completely hogged out years ago and they flowed somewhere around there. These days, if you want a 260 cfm head, you buy $1000 AFR 185s. Back then you had to buy $100 heads and spend another $1000 to get them to flow 260cfm or so. Do you have flow numbers on the heads in question?
Posts: 2373 | Registered: Jun 2000
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99gt-UJSTLST
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Member # 584
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posted
quote:
Originally posted by 88gt:
Will Edelbrock performer RPM heads with 2.02 valves clear the stock pistons on my 5.0? I don't think they do, but thought i'd check anyways.
talk to Yellow94GT
I think he put them on his stock block and is runing mid 12's
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SOUTH BAY STANGS
MINOR BOLT ON'S
www.southbaystangs.com
Posts: 2558 | From: SAN JOSE CA | Registered: Nov 2001
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Yellow94GT
Mr. 60 FT
Member # 431
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posted
99gt-UJSTLST - Damn bro, someone has a good memory
88gt - What Edelbrock heads are they? I run Victor Jr's with 2.02 intakes. These heads flow 270/190 cfm @ .500 stock though...lol
My car seems to run fine, but it's time for a better cam. My bets so far was a 12.5 @ 107.9 MPH. Remember thats with a 3550lb race weight and in the heat. So you tell me if its worth it
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AED
1994 GT Bucket that will likely never run
1999 SLOLEEN Twin Turbo Coyote
2008 F250 580 RWHP 1129 RWTQ
Posts: 5990 | From: Cameron Park, Ca | Registered: Sep 2001
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Yellow94GT
Mr. 60 FT
Member # 431
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posted
Oh yeah, I had to flycut the pistons also ![[patriot]](graemlins/patriot.gif)
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AED
1994 GT Bucket that will likely never run
1999 SLOLEEN Twin Turbo Coyote
2008 F250 580 RWHP 1129 RWTQ
Posts: 5990 | From: Cameron Park, Ca | Registered: Sep 2001
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99gt-UJSTLST
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Member # 584
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posted
quote:
Originally posted by Yellow94GT:
99gt-UJSTLST - Damn bro, someone has a good memory
88gt - What Edelbrock heads are they? I run Victor Jr's with 2.02 intakes. These heads flow 270/190 cfm @ .500 stock though...lol
My car seems to run fine, but it's time for a better cam. My bets so far was a 12.5 @ 107.9 MPH. Remember thats with a 3550lb race weight and in the heat. So you tell me if its worth it
was up drew
yea I tend to remember people who run good times and simple boltons
hey go my car runing know it runs kind of reach at idle but nothing a little tuning wont cure ![[Big Grin]](biggrin.gif)
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SOUTH BAY STANGS
MINOR BOLT ON'S
www.southbaystangs.com
Posts: 2558 | From: SAN JOSE CA | Registered: Nov 2001
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Yellow94GT
Mr. 60 FT
Member # 431
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posted
99gt-UJSTLST - Good to hear that the car is up and running! Now for some break-in miles and a tune.
PM me when you going out to the track with that beast and we'll meat up
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AED
1994 GT Bucket that will likely never run
1999 SLOLEEN Twin Turbo Coyote
2008 F250 580 RWHP 1129 RWTQ
Posts: 5990 | From: Cameron Park, Ca | Registered: Sep 2001
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Stimson
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Member # 51
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posted
He said they're the "Edelbrock performer RPM heads with 2.02" If I remember right they're the 6039 heads. They flow the same or even slightly less than the 1.90 valved 6037 version of these heads. Something like 215 cfm out of the box.
Posts: 2373 | Registered: Jun 2000
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99gt-UJSTLST
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Member # 584
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posted
quote:
Originally posted by Yellow94GT:
99gt-UJSTLST - Good to hear that the car is up and running! Now for some break-in miles and a tune.
PM me when you going out to the track with that beast and we'll meat up
ill let you know
right know with my vacation comeing up Its looking like I will be at the track in October couse september the 2 weeks that ill be home ill be breaking it in and then off to the dyno and track hope fully with my BF Goodreach I can pull a High 10 or better
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SOUTH BAY STANGS
MINOR BOLT ON'S
www.southbaystangs.com
Posts: 2558 | From: SAN JOSE CA | Registered: Nov 2001
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88gt
Custom
Member # 579
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posted
The heads are 6025's. The heads were brand new and were bought by my friend for his 408 stroker and were ported by Power Heads in southern california. I don't know any flow numbers, but Power Heads says they only have one stage of port so i guess i could call them and ask. From what it sounds like, all their heads should flow the same??
I can get these heads for 700 or buy AFR's for 1000+ (if you could tell me where to get new AFR's for 1000 i'd do it). I just want to know how much more hp i'd be gaining from the AFRs to see if it's worth spending the extra money on them.
Posts: 1482 | From: Santa Clara/Bay area | Registered: Nov 2001
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88gt
Custom
Member # 579
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posted
Drew - how hard/expensive was it to fly cut your pistons?
Posts: 1482 | From: Santa Clara/Bay area | Registered: Nov 2001
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Stimson
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Member # 51
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posted
The 6025's don't have smog ports. They're for the older windsor market. I don't know how big of an issue smog is for you. Edelbrock claims they flow 229 cfm at .500 lift, which means reality is closer to 215 cfm.... stage 1 port? Probably worth 5-15 cfm... basicly you'll have heads with larger valves (less velocity) and less flow AND larger runner volume than the AFR 165's.... but before digging in any further, one has to step back and ask "What's my goal for this combo?"
Posts: 2373 | Registered: Jun 2000
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Yellow94GT
Mr. 60 FT
Member # 431
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posted
You don't even want to know how I did my pistons
Actually, I used the die grinder and clay method. I just took my time and it came out good.
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AED
1994 GT Bucket that will likely never run
1999 SLOLEEN Twin Turbo Coyote
2008 F250 580 RWHP 1129 RWTQ
Posts: 5990 | From: Cameron Park, Ca | Registered: Sep 2001
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FasterDamnit
Bad Attitude
Member # 442
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posted
Geez-
So much misinfo here...
Stage I,II porting, etc is meaningless- no way you can assign flow numbers. Just a marketing buzzword. You want to know the flow numbers vs. port volume (intakes) to get a ballpark idea of whether or not velocity will be an issue. Bet they will have decent numbers in both respects. If they flow 250cfm at .500" lift or better and 180cc's or less then you will have power.
Why? LONG RUNNER EFI INTAKE!!!!!!!!!!!!!!!!!
The velocity is created in those long runners- the intake port in the head is no more than 10% of the total intake tract length.
Both Drew and I are running heads w/ 2.02" valves and big intake ports. He runs the little E cam and i have just the stock cam. We both run over 107mph!!! I have hit 108.9! He has run a 12.5, me a 12.6. In my case my lower intake has been ported and matches the heads. Drew's DOES NOT. It is ported but is still smaller than the intake ports on the head. Is any of this getting thru? You will need to have a good aftermarket intake to keep up w/ the heads. Throw on some 1.7 rockers and get ready to rock. If you do a Cobra or GT-40 try to find one w/ the lower ported. The Edelbrock Performer and Trick Flow Street intakes will work well out-of-the-box. If you go with more cam be prepared to notch the pistons.
Finally, I paid $700 for my heads...
JL
![[Eek!]](eek.gif)
edit- "one stage of porting" does NOT equal "stage one porting". The have one CNC program per head design.
[ August 30, 2002, 06:15 PM: Message edited by: FasterDamnit ]
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'92 LX T5
Looked stock, went 11's 11.90 at 115mph.
'65 Mustang 347
www.fordmuscle.com
Livin' in the Carolina Pines
Posts: 2971 | From: NorCal | Registered: Sep 2001
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PunkINa5.SLOW
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Member # 10
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posted
quote:
Originally posted by Yellow94GT:
You don't even want to know how I did my pistons
Actually, I used the die grinder and clay method. I just took my time and it came out good.
Wonder what effects it will have long term.
Does the motor buzz or vibrate at all?
Just curious always THOUGHT about doing it but was afraid of balance issues.
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OUTTA THA DRAMA
R.I.P. MIKE STARKEY MY BABY BROTHER
12/8/77-5/17/03
Posts: 2495 | From: MTZ | Registered: Sep 2000
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PunkINa5.SLOW
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Member # 10
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posted
quote:
Originally posted by FasterDamnit:
Geez-
So much misinfo here...
Stage I,II porting, etc is meaningless- no way you can assign flow numbers. Just a marketing buzzword. You want to know the flow numbers vs. port volume (intakes) to get a ballpark idea of whether or not velocity will be an issue. Bet they will have decent numbers in both respects. If they flow 250cfm at .500" lift or better and 180cc's or less then you will have power.
Why? LONG RUNNER EFI INTAKE!!!!!!!!!!!!!!!!!
The velocity is created in those long runners- the intake port in the head is no more than 10% of the total intake tract length.
Both Drew and I are running heads w/ 2.02" valves and big intake ports. He runs the little E cam and i have just the stock cam. We both run over 107mph!!! I have hit 108.9! He has run a 12.5, me a 12.6. In my case my lower intake has been ported and matches the heads. Drew's DOES NOT. It is ported but is still smaller than the intake ports on the head. Is any of this getting thru? You will need to have a good aftermarket intake to keep up w/ the heads. Throw on some 1.7 rockers and get ready to rock. If you do a Cobra or GT-40 try to find one w/ the lower ported. The Edelbrock Performer and Trick Flow Street intakes will work well out-of-the-box. If you go with more cam be prepared to notch the pistons.
Finally, I paid $700 for my heads...
JL
edit- "one stage of porting" does NOT equal "stage one porting". The have one CNC program per head design.
JL I realize that the intake port itself is only 10% of the track but Im sure that velocity suffers with intake ports that are too large.
I say this because of a car that I had.
here is the story.
I had a 91LX stock bottom end with an F cam and ported cobra intake.
With out of the box TFS heads it went 109mph.
With stage 2 TEA TFS heads it slowed to 106mph.
That was the only change and that change was only made because I had a rocker stud break and the rocker arm damaged the top of the valve stem on the out of box TFS heads so I threw the TEA heads on just to be able to still drive and race the car.
These where the only changes.
I had a chance with both at test and tune to tune for optimum performance and this was all I got 109 out of the box and 106 with TEA stage 2 heads.
I chalked it up to the fact that the heads where too big.
I can say this that Im not sure it was the intake port, but could have been the exhaust port that lacked velocity and slowed the car.
I know its only 10% of the intake tract but it just has to have an effect on velocity.
Im sure in the bowl area the velocity just takes a shit when the heads are too big as compared to the intake.
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OUTTA THA DRAMA
R.I.P. MIKE STARKEY MY BABY BROTHER
12/8/77-5/17/03
Posts: 2495 | From: MTZ | Registered: Sep 2000
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FasterDamnit
Bad Attitude
Member # 442
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posted
1- What did Mr. Tooley have to say?
2- Were the weather conditions similar?
3- How about combustion chamber volume? Unless the heads wee shaved the port work increases chamber volume.
4- How was your intake to head match-up?
5- At $700 I still say he has a great deal in front of him!
JL
[ August 31, 2002, 12:15 AM: Message edited by: FasterDamnit ]
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'92 LX T5
Looked stock, went 11's 11.90 at 115mph.
'65 Mustang 347
www.fordmuscle.com
Livin' in the Carolina Pines
Posts: 2971 | From: NorCal | Registered: Sep 2001
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Stimson
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Member # 51
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posted
Jim, I know what your saying about STAGE 1, 2 and 3.... but those terms are so deep rooted that I've just learned to live with them.... for example..... TFS box stock = 240ish cfm, stage 1 = 260ish cfm, stage 2= 280ish cfm and stage 3 = 300ish cfm. Pretty much any decent shop can get these numbers out of TFS TW's. Of course TEA can get 320cfm out of them with a stage 3 port work, but they're only one shop. So for 210 cfm edelbrock 6037's, figure 225ish for stag 1, 245ish for stage 2 and 265ish cfm for stage 3. See where I'm coming from? I've learned not to fight the current on these things and live with them. For example get me started on "torque" which I'm sad to say 99.99% of the people into this hobby have NO clue what it is and how it relates to HP. I just don't fight the current on this topic anymore either.
-Sawson
ps I think your combo and Drew's could possibly suggest that flow numbers are more important than velocity via smaller ports.
Posts: 2373 | Registered: Jun 2000
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yipnip5.0
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Member # 175
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posted
quote:
Originally posted by st5150:
[QB For example get me started on "torque" which I'm sad to say 99.99% of the people into this hobby have NO clue what it is and how it relates to HP.
[/QB]
Interesting stats... more like 99.9% of the people on this board.
![[Roll Eyes]](rolleyes.gif)
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the faster you go, the faster you go.
Posts: 256 | Registered: Mar 2001
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yipnip5.0
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Member # 175
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posted
quote:
Originally posted by st5150:
[QB For example get me started on "torque" which I'm sad to say 99.99% of the people into this hobby have NO clue what it is and how it relates to HP.
[/QB]
Interesting stats... more like 99.9% of the people on this board.
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the faster you go, the faster you go.
Posts: 256 | Registered: Mar 2001
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Stimson
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Member # 51
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posted
quote:
Originally posted by yipnip5.0:
quote:
Originally posted by st5150:
[QB For example get me started on "torque" which I'm sad to say 99.99% of the people into this hobby have NO clue what it is and how it relates to HP.
Interesting stats... more like 99.9% of the people on this board.
[/QB]
With 57 posts in a year and half, maybe you should help out your local Ford racers some more since you're in that elite 0.01 percentile
Posts: 2373 | Registered: Jun 2000
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Yellow94GT
Mr. 60 FT
Member # 431
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posted
Jim - Everything you have said I believe to be accurate. I do have one correction though. The ports on my lower intake are bigger than the ports on my Vic Jr's. So yes, I do have a miss match.
PunkINa5.SLOW - Hey man, so far I have had 0 problems. I talked to quite a few people that are running Vic Jr's this way and followed there advice on notching the stock valve relifes.
As far as buzzing or vibrations, I have none to report
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AED
1994 GT Bucket that will likely never run
1999 SLOLEEN Twin Turbo Coyote
2008 F250 580 RWHP 1129 RWTQ
Posts: 5990 | From: Cameron Park, Ca | Registered: Sep 2001
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yipnip5.0
¯
Member # 175
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posted
quote:
Originally posted by st5150:
With 57 posts in a year and half, maybe you should help out your local Ford racers some more since you're in that elite 0.01 percentile
Nice comeback... searched high and low for that one did ya? LOL!
Posts: 256 | Registered: Mar 2001
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