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11-19-2011, 09:06 PM
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#1
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Join Date: Sep 2006
Location: north jersey
Posts: 1,680
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cylinder head question
my father is building an engine and was wondering if he should stick with his older style corvette fuelie heads or look into purchasing something new. he had been looking into the patriot performance vortec heads. does anyone have an insight on the newer vortecs as far as flow numbers or performance.
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11-19-2011, 09:09 PM
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#2
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Co-Founder / Site Admin
Join Date: Jul 2004
Location: Ewing, NJ
Posts: 22,473
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Well, I suppose it depends on what he's looking to get out of it. There may be a few exceptions, but just about any modern aftermarket performance head should easily make more power than factory fuelie heads.
- Justin
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1999 Camry - Beigemobile DD
2002 Suburban - Wife's DD
2004 Grand Cherokee - Not running / Project / Selling?
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11-19-2011, 09:12 PM
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#3
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Join Date: Nov 2005
Location: Edison
Posts: 7,855
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Gm vortecs with stock springs are good for .480 lift. I would either go with gmpp or etecs. I think rhs made a vortec head as well but didn't flow very well.
I highly reccomend buying them with machine work done unless you go used. Screw in studs are a very cheap insurance unless he likes pulling the heads a lot.
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1984 Firebird
2000 Z28
Last edited by WayFast84; 11-20-2011 at 11:00 PM.
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11-19-2011, 09:33 PM
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#4
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12 Second Club / Bullwinkle
Join Date: Oct 2010
Location: Old Bridge, NJ/Corpus Christi, TX
Posts: 1,847
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Take a look at the gmpp fastburn heads. My dad has them along with the gm847 cam on his vette and the car makes power to the moon...
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1994 Medium Patriot Red Z28 6spd
370ci/Huron Speed T6 S480 ET-R HO
Quote:
Originally Posted by Jersey Mike
Quote:
Originally Posted by WSex
who is FFB?
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An NJFBOA legend. Ask about him at the next meet. |
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11-20-2011, 09:39 AM
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#5
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Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,213
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What size engine and what is the casting # on the fuelie heads he has now?
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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11-20-2011, 02:58 PM
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#6
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Join Date: Sep 2006
Location: north jersey
Posts: 1,680
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thanks for the advice guys, i know its a 350 but i will have to get back to you on the casting on the fuelie heads, i know they are pocket ported
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11-20-2011, 07:44 PM
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#7
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11 Second Club
Join Date: Aug 2004
Location: Pitman, NJ
Posts: 587
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Quote:
Originally Posted by WayFast84
Gm vortecs stock are good for .480 lift. I would either go with gmpp or etecs. I think rhs made a vortec head as well but didn't flow very well.
I highly reccomend buying them with machine work done unless you go used. Screw in studs are a must.
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"only good for .480 lift" What does that even mean?
"Screw in studs are a must." If this is true then why didn't GM put them in there from the factory and why are there countless 10-15 year old Vortec motors currently running around just fine without them?
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Last edited by Slow Z; 11-20-2011 at 07:48 PM.
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11-20-2011, 07:51 PM
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#8
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
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Quote:
Originally Posted by Tru2Chevy
Well, I suppose it depends on what he's looking to get out of it.
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This. Intended use, budget, etc.
I mean I could say buy some AFR 220s but if the car is a street car with an automatic that might suck a bit. lol
Does he want to change intakes?
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The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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11-20-2011, 07:58 PM
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#9
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by BonzoHansen
This. Intended use, budget, etc.
I mean I could say buy some AFR 220s but if the car is a street car with an automatic that might suck a bit. lol
Does he want to change intakes?
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Intended use and budget all the way. Can't make a suggestion without that.
Off of the top of my head I'd say AFR 195's. 
Also, are the fuelie heads numbers-matching?
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11-20-2011, 08:36 PM
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#10
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11 Second Club
Join Date: Aug 2004
Location: Pitman, NJ
Posts: 587
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Quote:
Originally Posted by BonzoHansen
This. Intended use, budget, etc.
I mean I could say buy some AFR 220s but if the car is a street car with an automatic that might suck a bit. lol
Does he want to change intakes?
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Quote:
Originally Posted by WildBillyT
Intended use and budget all the way. Can't make a suggestion without that.
Off of the top of my head I'd say AFR 195's.
Also, are the fuelie heads numbers-matching? |
Have either of you used the respective AFR heads you recommend? Just curious...
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11-20-2011, 08:52 PM
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#11
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by Slow Z
Have either of you used the respective AFR heads you recommend? Just curious...
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Me? No. Seen a few "street" motors on the engine dyno that performed very well though. I was impressed with the performance given the cam sizes. Was a few years ago (4 or so?) though.
I did have an engine with fuelies, though, so I know what you can do with those.
Either way, gotta know what type of combo he wants before doing research and picking a head. I was using the smilie as I just pulled that head idea out of my ass.
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11-20-2011, 08:53 PM
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#12
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Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
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no, I was trying to make a point about selecting heads w/o complete info. Note I did not recommend anything.
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Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
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11-20-2011, 08:55 PM
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#13
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
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Quote:
Originally Posted by Slow Z
Have either of you used the respective AFR heads you recommend? Just curious...
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I have and I must say they are excellent at both propping doors open and keeping papers on my desk. The quality and craftsmanship can only be described as a art.
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11-21-2011, 05:12 PM
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#14
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Join Date: May 2005
Location: under a roof
Posts: 2,034
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What are you looking to get out of the engine?
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11-22-2011, 07:11 AM
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#15
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Join Date: Sep 2006
Location: north jersey
Posts: 1,680
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he just wanted to know if newer style heads would flow better, he is just trying to make decent power on a budget. he isnt trying to make as much power as possible, just a good flowing head.
on a side note, does anyone have any experience with the lt1 afr 227 heads? im building a 396 c.i lt1 and im in the market for some heads.
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11-22-2011, 08:33 AM
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#16
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Lord of the rings / 10 Second Club / Meet Coordinator
Join Date: Aug 2004
Location: Millstone Township, NJ
Posts: 6,355
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Quote:
Originally Posted by Lt1_8U
he just wanted to know if newer style heads would flow better, he is just trying to make decent power on a budget. he isnt trying to make as much power as possible, just a good flowing head.
on a side note, does anyone have any experience with the lt1 afr 227 heads? im building a 396 c.i lt1 and im in the market for some heads.
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Lot of guys use them for forced induction builds when going for big power. They have a lot of volume and flow pretty well.
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11-22-2011, 04:34 PM
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#17
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Hippy Mod, Bergermeister Meisterberger, Moderator
Join Date: Aug 2004
Location: Ewing
Posts: 6,213
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Quote:
Originally Posted by Lt1_8U
he just wanted to know if newer style heads would flow better, he is just trying to make decent power on a budget. he isnt trying to make as much power as possible, just a good flowing head.
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If the existing heads are 2.02 and 1.6 valves from the factory then they probably flow good enough for decent power. But everything else comes into the equation so it's a total guess without some type of power level goal.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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