ur thoughts on edelbrock heads/intake
06-05-2008 | 05:58 PM
#1
ur thoughts on edelbrock heads/intake been askin around on other sites and was wonderin what u guys thought of these edelbrock parts
Edelbrock RPM Xtreme CNC heads
http://www.jegs.com/i/Edelbrock/350/61939/10002/-1
LT4 intake
http://www.jegs.com/i/Edelbrock/350/7109/10002/-1
plan on swappin in a cc306 and uprade the entire valve train while im at it
Edelbrock RPM Xtreme CNC heads
http://www.jegs.com/i/Edelbrock/350/61939/10002/-1
LT4 intake
http://www.jegs.com/i/Edelbrock/350/7109/10002/-1
plan on swappin in a cc306 and uprade the entire valve train while im at it
06-05-2008 | 06:19 PM
#2
Those FLYWHEEL numbers listed are less than what you can have at the tires with a good heads and camk package with a stock untouched intake.
In otherwords the Edelbrocks stuff aspires to be a joke and would be an exceptionally poor choice. They are counting on people buying it based on name because the results suck.
In otherwords the Edelbrocks stuff aspires to be a joke and would be an exceptionally poor choice. They are counting on people buying it based on name because the results suck.
06-06-2008 | 10:34 AM
#5
well ill tell you i have an Ai cam going in this weekend. there stuff seems to be very good but ill let you know about the cam. i know thats not what you ewr asking but if i were you id go with the Ai stuff
06-06-2008 | 10:50 AM
#7
I persoanlly don't think the 306 is too big and with untouched stock heads you will see around 340-350 rwhp. If you clean up your stock heads you will be around 400 rwhp which is plenty for the street. Anymore and you take the chance of breaking stuff. Since you have a cam already, just get your stock heads and intake ported, you will be very happy.
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06-06-2008 | 12:26 PM
#8
12 Second Club
Joined: Aug 2007
Posts: 387
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From: North Versailles, PA
I persoanlly don't think the 306 is too big and with untouched stock heads you will see around 340-350 rwhp. If you clean up your stock heads you will be around 400 rwhp which is plenty for the street. Anymore and you take the chance of breaking stuff. Since you have a cam already, just get your stock heads and intake ported, you will be very happy.
06-06-2008 | 12:59 PM
#9
ya ive been readin and lookin for vids, dyno charts, write ups for a few weeks...and 10% of the ppl say that the cc306 is too big....the other 90% have it in there cars and it works wonderfully puttin anywhere from 340-380 rwhp depending on the head work...
so let it be known...cc306 not to big for a 350, decent for a 355 and the smallest to be put in a 383
so let it be known...cc306 not to big for a 350, decent for a 355 and the smallest to be put in a 383
06-06-2008 | 01:19 PM
#10
I see that everybody is against the Edlebrock heads but has anybody actually tried them?. I know all the data that supports this head says its not a good head but does anybody have any real world experience with them?. Some people think the hotcam doesnt make any power but has made equal to if not more power than some bigger cams with more aggresive ramps rates. Im not trying to start an arguement or whos head is better but if you dont have any experice with them then how can you criticize them?
06-06-2008 | 02:26 PM
#11
I see that everybody is against the Edlebrock heads but has anybody actually tried them?. I know all the data that supports this head says its not a good head but does anybody have any real world experience with them?. Some people think the hotcam doesnt make any power but has made equal to if not more power than some bigger cams with more aggresive ramps rates. Im not trying to start an arguement or whos head is better but if you dont have any experice with them then how can you criticize them?
Link to Jegs:\
http://www.jegs.com/i/Edelbrock/350/...-1#moreDetails
06-06-2008 | 02:44 PM
#12
TECH Junkie
Joined: Dec 2005
Posts: 3,092
Likes: 8
CNC profiled195cc intake ports flow 265 cfm @ .600" lift
CNC profiled 75cc exhaust ports flow 185 cfm @ .600" lift
Those heads pale in comparison to the new AFR heads. However they are much cheaper. So I guess it comes down to how much you want to pay for horsepower.
CNC profiled 75cc exhaust ports flow 185 cfm @ .600" lift
Those heads pale in comparison to the new AFR heads. However they are much cheaper. So I guess it comes down to how much you want to pay for horsepower.
06-06-2008 | 02:49 PM
#13
I agree with you about not criticizing something you have no experience with, but at the same time would you rather pay $2100 for a set of out of the box heads that flow 270 or pay $1500 to have your stockers ported? I believe that Lloyd ported a set of these in the past and I wish I could find the thread that had his comments in them. In either case these heads are only going to be purchased by someone who is going to be putting some serious power down in a stroker or boosted application and with that said they are competeing with TFS, AFR, Dart, etc. Those other manufactures have been proven time and again where as Edelbrock was late to the game. I don't think people call them crap because of quality, but rather Edelbrock developed something that the market already had, that being a well proven aftermarket head capable of big numbers.
06-06-2008 | 03:47 PM
#14
I agree with you about not criticizing something you have no experience with, but at the same time would you rather pay $2100 for a set of out of the box heads that flow 270 or pay $1500 to have your stockers ported? I believe that Lloyd ported a set of these in the past and I wish I could find the thread that had his comments in them. In either case these heads are only going to be purchased by someone who is going to be putting some serious power down in a stroker or boosted application and with that said they are competeing with TFS, AFR, Dart, etc. Those other manufactures have been proven time and again where as Edelbrock was late to the game. I don't think people call them crap because of quality, but rather Edelbrock developed something that the market already had, that being a well proven aftermarket head capable of big numbers.
06-06-2008 | 03:56 PM
#15
copied and pasted form summit website:
Brand: Edelbrock
Product Line: Edelbrock Performer RPM Xtreme CNC LT4 Cylinder Heads
Part Type: Cylinder Heads
Part Number: EDL-61939
Cylinder Head Style: Assembled
Cylinder Head Material: Aluminum
Cylinder Head Finish: Natural
Combustion Chamber Volume (cc): 54
CNC-Machined Combustion Chamber: Yes
Intake Runner Volume (cc): 195cc
CNC-Machined Intake Runner: Yes
CNC-Machined Exhaust Runner: Yes
Intake Port Location: Standard
Exhaust Port Location: Standard
Spark Plug Style: Angle
Intake Valves Included: Yes
Intake Valve Diameter (in): 2.020 in.
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in): 1.570 in.
Valve Springs Included: Yes
Maximum Valve Lift (in): 0.600 in.
Outside Diameter of Outer Spring (in): 1.450 in.
Damper Spring Included: No
Number of Springs Per Valve: Single
Retainers Included: Yes
Retainer Material: Steel
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
Valve Stem Seal Style: PC seal
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: 3/8-24 in.
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: No
Valve Cover Mounting Style: Center and perimeter bolt
Accessory Bolt Holes Drilled: Yes
Valve Guides Included: Yes
Valve Guide Material: Manganese bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: No
Quantity: Sold individually.
Product Line: Edelbrock Performer RPM Xtreme CNC LT4 Cylinder Heads
Part Type: Cylinder Heads
Part Number: EDL-61939
Cylinder Head Style: Assembled
Cylinder Head Material: Aluminum
Cylinder Head Finish: Natural
Combustion Chamber Volume (cc): 54
CNC-Machined Combustion Chamber: Yes
Intake Runner Volume (cc): 195cc
CNC-Machined Intake Runner: Yes
CNC-Machined Exhaust Runner: Yes
Intake Port Location: Standard
Exhaust Port Location: Standard
Spark Plug Style: Angle
Intake Valves Included: Yes
Intake Valve Diameter (in): 2.020 in.
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in): 1.570 in.
Valve Springs Included: Yes
Maximum Valve Lift (in): 0.600 in.
Outside Diameter of Outer Spring (in): 1.450 in.
Damper Spring Included: No
Number of Springs Per Valve: Single
Retainers Included: Yes
Retainer Material: Steel
Locks Included: Yes
Lock Style: 7 degree
Valve Stem Seals Included: Yes
Valve Stem Seal Style: PC seal
Rocker Arm Studs Included: Yes
Rocker Arm Nut Thread Size: 3/8-24 in.
Rocker Arms Included: No
Rocker Arm Nuts Included: No
Guideplates Included: No
Valve Cover Mounting Style: Center and perimeter bolt
Accessory Bolt Holes Drilled: Yes
Valve Guides Included: Yes
Valve Guide Material: Manganese bronze
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron
Steam Holes Drilled: No
Oiling Style: Through pushrod
Machined for O-Ring: No
Heat Crossover: No
Quantity: Sold individually.
Last edited by Colin91Z; 06-06-2008 at 04:15 PM.
06-06-2008 | 04:19 PM
#16
Read closer ............$657.50 per head
Which equates to $1315 for a pair.
http://store.summitracing.com/partde...5&autoview=sku
Again, Not trying to be a dick or start a **** match but honestly there is nothing wrong with these heads. Now, are there better values out there?....proabably. What I plan on doing is getting a pair and see where it gets me. You live and you learn.
Which equates to $1315 for a pair.
http://store.summitracing.com/partde...5&autoview=sku
Again, Not trying to be a dick or start a **** match but honestly there is nothing wrong with these heads. Now, are there better values out there?....proabably. What I plan on doing is getting a pair and see where it gets me. You live and you learn.
06-06-2008 | 04:23 PM
#17
Read closer ............$657.50 per head
Which equates to $1315 for a pair.
http://store.summitracing.com/partde...5&autoview=sku
Again, Not trying to be a dick or start a **** match but honestly there is nothing wrong with these heads. Now, are there better values out there?....proabably. What I plan on doing is getting a pair and see where it gets me. You live and you learn.
Which equates to $1315 for a pair.
http://store.summitracing.com/partde...5&autoview=sku
Again, Not trying to be a dick or start a **** match but honestly there is nothing wrong with these heads. Now, are there better values out there?....proabably. What I plan on doing is getting a pair and see where it gets me. You live and you learn.
Second, you have the wrong part # in your link. The heads in question were the CNC ported extreme LT4s, not the standard LT1 replacements that you linked to. The ones in your link barely out-flow a stock un-ported casting and flow no where near the 265/185 cfm that the edelbrack CNC LT4s do.
Here's the correct one....and the are $1029 each.
http://store.summitracing.com/partde...5&autoview=sku
Last edited by Colin91Z; 06-06-2008 at 04:29 PM.
06-06-2008 | 04:36 PM
#18
I have the correct part number, I wouldnt buy the cnc ported LT4 style heads. I would get the pair in my link b/c there better than stock and they have more meat to be ported more later on. Nobody can say they dont make more power than stock b/c nobody has made any passes or dynoed a set. If im wrong I'll be the first to admit but someone has to test these things out. Hell I might just buy a pair and see what they do. 
06-06-2008 | 04:46 PM
#19
I have the correct part number, I wouldnt buy the cnc ported LT4 style heads. I would get the pair in my link b/c there better than stock and they have more meat to be ported more later on. Nobody can say they dont make more power than stock b/c nobody has made any passes or dynoed a set. If im wrong I'll be the first to admit but someone has to test these things out. Hell I might just buy a pair and see what they do.
I was just pointing out that you weren't talking about the same heads that the rest of us were talking about in this thread.
Be sure to post up your results, I'm a little curious to see how they do
