heads for 408 build????
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2nd Gear Member
Joined: Mar 2007
Posts: 193
From:
heads for 408 build????
hey guys, i'm in the process of building a 408, i read that article on the dart heads in the nov. mmff... and how that got 618hp and all, but i wana know if u guys think the trickflow r series 225's would be a better head, i'm goin to buy either one bare, which do u guys think???
2nd Gear Member
Joined: Aug 2006
Posts: 274
From:
RE: heads for 408 build????
if the engine is going to see any kind of RPM's, 5500+, definetly go with a 225 head. compare the flow charts of the 2 heads to see which head provides more flow in the lower number, .1-.5. the flow on one head a might be a little more at .6 lift but head b might flow better than A from .1-.5. go with whatever head flows the best overall.
6th Gear Member
Joined: Feb 2005
Posts: 13,396
From: KY
RE: heads for 408 build????
TEA 225's
or just check out TEA's websit for any trickflow head
http://www.totalengineairflow.com/pr...ead/tfshiport/
or just check out TEA's websit for any trickflow head
http://www.totalengineairflow.com/pr...ead/tfshiport/
4th Gear Member
Joined: Jul 2006
Posts: 1,062
From: The Great State Of Texas
RE: heads for 408 build????
I agree totally with Jasperstang...I sold my 5 axis AFR 225'sto get my hands on a set of CNC Trick Flow "R" heads, simply no comparison. But there is also no need without something to feed them, high compression tons of spray or large boost.
4th Gear Member
Joined: Jul 2006
Posts: 1,062
From: The Great State Of Texas
RE: heads for 408 build????
Ehhh 11+. They can handle a ton of CFM's, you are going to have to aim for a somewhat aggressive camshaft, intake and yeah your compression N/A will have to be pretty good to get the most of them.
I have decided on a Vortech Y trim, so I decided to err onthe big side with those heads.
I know a dude running a 408ci, 11:5:1, Jay Allen custom grind, ported super victor intake, Holley 950 carb and two 250kits (spray) with the Total Engine Airflow CNC Trick Flow "R" heads and laying down 9.20's and he is fixing to dip into the high eights (converting to F.A.S.T. and more spray)
All on the coveted 1969 351W block and forged internals.
I have decided on a Vortech Y trim, so I decided to err onthe big side with those heads.
I know a dude running a 408ci, 11:5:1, Jay Allen custom grind, ported super victor intake, Holley 950 carb and two 250kits (spray) with the Total Engine Airflow CNC Trick Flow "R" heads and laying down 9.20's and he is fixing to dip into the high eights (converting to F.A.S.T. and more spray)
All on the coveted 1969 351W block and forged internals.
Thread Starter
2nd Gear Member
Joined: Mar 2007
Posts: 193
From:
RE: heads for 408 build????
ORIGINAL: MadMan@TheWheel
Ehhh 11+. They can handle a ton of CFM's, you are going to have to aim for a somewhat aggressive camshaft, intake and yeah your compression N/A will have to be pretty good to get the most of them.
I have decided on a Vortech Y trim, so I decided to err onthe big side with those heads.
I know a dude running a 408ci, 11:5:1, Jay Allen custom grind, ported super victor intake, Holley 950 carb and two 250kits (spray) with the Total Engine Airflow CNC Trick Flow "R" heads and laying down 9.20's and he is fixing to dip into the high eights (converting to F.A.S.T. and more spray)
All on the coveted 1969 351W block and forged internals.
Ehhh 11+. They can handle a ton of CFM's, you are going to have to aim for a somewhat aggressive camshaft, intake and yeah your compression N/A will have to be pretty good to get the most of them.
I have decided on a Vortech Y trim, so I decided to err onthe big side with those heads.
I know a dude running a 408ci, 11:5:1, Jay Allen custom grind, ported super victor intake, Holley 950 carb and two 250kits (spray) with the Total Engine Airflow CNC Trick Flow "R" heads and laying down 9.20's and he is fixing to dip into the high eights (converting to F.A.S.T. and more spray)
All on the coveted 1969 351W block and forged internals.
WOW... is porting the intake really worth it,?? how much roughly does that cost? I plan on running 11:1 or maybe 11.5:1 compression, there will be some factors to decide on before i figure that, but like i said, for sure i'll prolly spray it, and maybe a procharger someday if money is there.
4th Gear Member
Joined: Jul 2006
Posts: 1,062
From: The Great State Of Texas
RE: heads for 408 build????
ORIGINAL: cobrakiller306
WOW... is porting the intake really worth it,?? how much roughly does that cost? I plan on running 11:1 or maybe 11.5:1 compression, there will be some factors to decide on before i figure that, but like i said, for sure i'll prolly spray it, and maybe a procharger someday if money is there.
ORIGINAL: MadMan@TheWheel
Ehhh 11+. They can handle a ton of CFM's, you are going to have to aim for a somewhat aggressive camshaft, intake and yeah your compression N/A will have to be pretty good to get the most of them.
I have decided on a Vortech Y trim, so I decided to err onthe big side with those heads.
I know a dude running a 408ci, 11:5:1, Jay Allen custom grind, ported super victor intake, Holley 950 carb and two 250kits (spray) with the Total Engine Airflow CNC Trick Flow "R" heads and laying down 9.20's and he is fixing to dip into the high eights (converting to F.A.S.T. and more spray)
All on the coveted 1969 351W block and forged internals.
Ehhh 11+. They can handle a ton of CFM's, you are going to have to aim for a somewhat aggressive camshaft, intake and yeah your compression N/A will have to be pretty good to get the most of them.
I have decided on a Vortech Y trim, so I decided to err onthe big side with those heads.
I know a dude running a 408ci, 11:5:1, Jay Allen custom grind, ported super victor intake, Holley 950 carb and two 250kits (spray) with the Total Engine Airflow CNC Trick Flow "R" heads and laying down 9.20's and he is fixing to dip into the high eights (converting to F.A.S.T. and more spray)
All on the coveted 1969 351W block and forged internals.
WOW... is porting the intake really worth it,?? how much roughly does that cost? I plan on running 11:1 or maybe 11.5:1 compression, there will be some factors to decide on before i figure that, but like i said, for sure i'll prolly spray it, and maybe a procharger someday if money is there.
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