Top end fpr a serious 383/396
Registered User
Joined: Jun 2000
Posts: 1,542
From: Long Island, NY ; Norfolk, VA
my all pro's flow 370cfm give or take a few on a 4.030 bore, w/ a 2.15 valve.. could they go over 400 i'm sure.. but it's almost pointless on a small bore w/ the larger valve necessary to move that much air..
As far as affording all pro's vs. a 18* setup yea the heads were closely priced in parts and work to make them work.. but some like myself are stuck /w a 23* bottom end that already had a **** ton of $$$ in.. Not worth selling and starting over.. I figured i can get where i wanna go w/ what i wanted to spend on this head.. Think it's gonna be fun..
As far as affording all pro's vs. a 18* setup yea the heads were closely priced in parts and work to make them work.. but some like myself are stuck /w a 23* bottom end that already had a **** ton of $$$ in.. Not worth selling and starting over.. I figured i can get where i wanna go w/ what i wanted to spend on this head.. Think it's gonna be fun..
Registered User
Joined: Mar 2004
Posts: 2,125
From: Connecticut
The TFS heads had a desgin change about a year ago that corrected many issues. The newer desgin has TFS-SBC-8 cast into them. The older desgin has TFS-SBC-7 in them. The head is a completely new desgin and cast totaly different. Very nice head if you ask me. Plenty of material to port. My TEA ported TFS heads flowed 317cfm at .700" lift.
On a side note, I have dealt with AFR thru a friend of mine who is a dealer for them. Honestly if they are telling you 6-8 months you can bet you wont see a set of heads in your hands for at least a year! I opted the find another head and the TFS heads seem to be the best head on the market for an LT1 right now. I personally belive they are better than the AFR heads and I would highly recommend them over the AFR.
But if you have your heart set on AFR's you will still probably reach your goals... only it will be 6-8 months later
On a side note, I have dealt with AFR thru a friend of mine who is a dealer for them. Honestly if they are telling you 6-8 months you can bet you wont see a set of heads in your hands for at least a year! I opted the find another head and the TFS heads seem to be the best head on the market for an LT1 right now. I personally belive they are better than the AFR heads and I would highly recommend them over the AFR.
But if you have your heart set on AFR's you will still probably reach your goals... only it will be 6-8 months later
Banned
Joined: Jan 2002
Posts: 1,935
From: Mobile, Ala..USA
my all pro's flow 370cfm give or take a few on a 4.030 bore, w/ a 2.15 valve.. could they go over 400 i'm sure.. but it's almost pointless on a small bore w/ the larger valve necessary to move that much air..
As far as affording all pro's vs. a 18* setup yea the heads were closely priced in parts and work to make them work.. but some like myself are stuck /w a 23* bottom end that already had a **** ton of $$$ in.. Not worth selling and starting over.. I figured i can get where i wanna go w/ what i wanted to spend on this head.. Think it's gonna be fun..
As far as affording all pro's vs. a 18* setup yea the heads were closely priced in parts and work to make them work.. but some like myself are stuck /w a 23* bottom end that already had a **** ton of $$$ in.. Not worth selling and starting over.. I figured i can get where i wanna go w/ what i wanted to spend on this head.. Think it's gonna be fun..
You truly think those heads will go 400 cfm or better, on a 4.030 bore at .700 lift or lower? 30 cfm is a HUGE..almost astronomical leap over what you have gotten already, over the porting pics I saw on here, that port was opened up a good bit over the way it came to you. I would love to get more thoughts on this.
David
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Joined: May 2000
Posts: 2,713
From: Cinnaminson, NJ
never said they were "****ty", just an older desging that has been improved upon with the release of the TFS-SBC-8 casting. I think the ports themselves are pretty close to the same with both castings.
Banned
Joined: May 2003
Posts: 6,661
From: LA (lower Alabama)
my all pro's flow 370cfm give or take a few on a 4.030 bore, w/ a 2.15 valve.. could they go over 400 i'm sure.. but it's almost pointless on a small bore w/ the larger valve necessary to move that much air..
As far as affording all pro's vs. a 18* setup yea the heads were closely priced in parts and work to make them work.. but some like myself are stuck /w a 23* bottom end that already had a **** ton of $$$ in.. Not worth selling and starting over.. I figured i can get where i wanna go w/ what i wanted to spend on this head.. Think it's gonna be fun..
As far as affording all pro's vs. a 18* setup yea the heads were closely priced in parts and work to make them work.. but some like myself are stuck /w a 23* bottom end that already had a **** ton of $$$ in.. Not worth selling and starting over.. I figured i can get where i wanna go w/ what i wanted to spend on this head.. Think it's gonna be fun..
Them bad *** ones run about $5500.00 without conversion and rockers. Ya will have about $7000 in them.
Registered User
Joined: Jun 2000
Posts: 1,542
From: Long Island, NY ; Norfolk, VA
You truly think those heads will go 400 cfm or better, on a 4.030 bore at .700 lift or lower? 30 cfm is a HUGE..almost astronomical leap over what you have gotten already, over the porting pics I saw on here, that port was opened up a good bit over the way it came to you. I would love to get more thoughts on this.
David
David
Registered User
Joined: Jun 2000
Posts: 1,542
From: Long Island, NY ; Norfolk, VA
Oh well there it went..
Registered User
Joined: Jun 2000
Posts: 1,542
From: Long Island, NY ; Norfolk, VA
Banned
Joined: Jan 2002
Posts: 1,935
From: Mobile, Ala..USA
The people who needed to read that post, did read it. Wasn't necessarily directed at you.
Making that power will kill the driveability of it, even at 650....daily driver status will be compromised. I would love to see other people ACTUALLY build more outer limit pumpgas LT1's.....instead of sit behind a keyboard and yap about it.
David
Registered User
Joined: Jun 2000
Posts: 1,542
From: Long Island, NY ; Norfolk, VA
Banned
Joined: Jan 2002
Posts: 1,935
From: Mobile, Ala..USA
Mine has went past 4 years, mostly because of a screwed up partnership that I did away with. The other partner just wanted to buy and pile up parts..never intended for it to run.
Mine will run this year for sure.
Yeh if we all had money we would all be driving limited street cars around with tags on em LMAO.
Mine will run this year for sure.
Yeh if we all had money we would all be driving limited street cars around with tags on em LMAO.
Registered User
Joined: Dec 1999
Posts: 2,248
From: Houston, TX
Ryan
