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8,622 Posts
fuelies ,should you swap? get the ? all the time..
"the question usually goes, hey, got a chance to buy fuelie heads for $100- $500, is this a great deal or what?"
thirty years ago FUELIE HEADS were the HOT TICKET
but your dealing with heads that are thirty year old technology, they will most likey need at least a valve job,new valve guides and new springs and port work, by the time you put that much work and money in those heads youll have more than likely spent more money for worse results than buying the more modern heads that have not had 30 plus years of stress,corrosion,and bad valve jobs
http://www.fastnuf.com/Headguide.html
HERES AVERAGE FUELIE HEAD FLOW NUMBERS
http://www.kendrick-auto.com/462_chevy_head.htm
heres two comon performance cylinder heads that are available today measured on the same flow bench
http://www.kendrick-auto.com/dart_cs_iron_eagle_215.htm
http://www.kendrick-auto.com/brodix_track_i__cs.htm
THE CAM AND CYLINDER HEADs are some of the MOST IMPORTANT PARTS ON YOUR ENGINE AS FAR AS DETERMINING YOUR HP/TQ POTENTIAL
YES THE FUELIE HEADS ARE BETTER THAN MOST STOCK HEADS, YES THEY CAN BE PORTED BY EXPERTS AND MAKE GOOD HP,BUT BY TODAYS STANDARDS THEY ARE STILL LESS THAN IDEAL.
EVEN THE COMON VORTEC TRUCK HEADS CAN EASILY OUT FLOW THEM,
http://www.kendrick-auto.com/vortec_cs_gm_head.htm
DO YOURSELF A HUGE FAVOR AND IF YOU SPEND MONEY ON ALMOST NO OTHER PARTS BUY GOOD HEADS, LOOK AT THESE ENGINE BUILDS
http://www.ryanscarpage.50megs.com/combos1.html
THE ONE THING YOULL FIND OUT IS HIGH HP ENGINES REQUIRE GOOD CYLINDER HEADS AND A MATCHING CAM, I CAN,T THINK OF A MUCH BIGGER OR MORE COMON MISTAKE THAT TRYING TO BUILD MAX PERFORMANCE WHILE RESTRICTING THE ENGINES POTENTIAL WITH STOCK HEADS
a rough FORMULA/gauge to guess the hp POTENTIAL FROM THE CYLINDER HEADS FLOW NUMBERS is (.257 x flow at max cam lift x 8= potential max hp)
so if you have 225cfm= about 462 hp
if you have 260cfm= 535 hp
now your highly unlikely to reach MAX HP POTENTIAL but the better heads will almost ALWAYS SHOW that 15% or better results. on a 400hp engine running fuelie heads that is likely to mean you would have had 460hp with the better heads (15% improvement)
look over these heads
ALPHABETICAL ORDER
AFR
BRODIX
CANFIELD
DART
EDELBROCK
G.M. PERFORMANCE
PRO ACTION
TRICKFLOW
WORLD PRODUCTS
heads they all have better heads
"the question usually goes, hey, got a chance to buy fuelie heads for $100- $500, is this a great deal or what?"
thirty years ago FUELIE HEADS were the HOT TICKET
but your dealing with heads that are thirty year old technology, they will most likey need at least a valve job,new valve guides and new springs and port work, by the time you put that much work and money in those heads youll have more than likely spent more money for worse results than buying the more modern heads that have not had 30 plus years of stress,corrosion,and bad valve jobs
http://www.fastnuf.com/Headguide.html
HERES AVERAGE FUELIE HEAD FLOW NUMBERS
http://www.kendrick-auto.com/462_chevy_head.htm
heres two comon performance cylinder heads that are available today measured on the same flow bench
http://www.kendrick-auto.com/dart_cs_iron_eagle_215.htm
http://www.kendrick-auto.com/brodix_track_i__cs.htm
THE CAM AND CYLINDER HEADs are some of the MOST IMPORTANT PARTS ON YOUR ENGINE AS FAR AS DETERMINING YOUR HP/TQ POTENTIAL
YES THE FUELIE HEADS ARE BETTER THAN MOST STOCK HEADS, YES THEY CAN BE PORTED BY EXPERTS AND MAKE GOOD HP,BUT BY TODAYS STANDARDS THEY ARE STILL LESS THAN IDEAL.
EVEN THE COMON VORTEC TRUCK HEADS CAN EASILY OUT FLOW THEM,
http://www.kendrick-auto.com/vortec_cs_gm_head.htm
DO YOURSELF A HUGE FAVOR AND IF YOU SPEND MONEY ON ALMOST NO OTHER PARTS BUY GOOD HEADS, LOOK AT THESE ENGINE BUILDS
http://www.ryanscarpage.50megs.com/combos1.html
THE ONE THING YOULL FIND OUT IS HIGH HP ENGINES REQUIRE GOOD CYLINDER HEADS AND A MATCHING CAM, I CAN,T THINK OF A MUCH BIGGER OR MORE COMON MISTAKE THAT TRYING TO BUILD MAX PERFORMANCE WHILE RESTRICTING THE ENGINES POTENTIAL WITH STOCK HEADS
a rough FORMULA/gauge to guess the hp POTENTIAL FROM THE CYLINDER HEADS FLOW NUMBERS is (.257 x flow at max cam lift x 8= potential max hp)
so if you have 225cfm= about 462 hp
if you have 260cfm= 535 hp
now your highly unlikely to reach MAX HP POTENTIAL but the better heads will almost ALWAYS SHOW that 15% or better results. on a 400hp engine running fuelie heads that is likely to mean you would have had 460hp with the better heads (15% improvement)
look over these heads
ALPHABETICAL ORDER
AFR
BRODIX
CANFIELD
DART
EDELBROCK
G.M. PERFORMANCE
PRO ACTION
TRICKFLOW
WORLD PRODUCTS
heads they all have better heads
