Lt1 heads VS vortec heads
#1
Lt1 heads VS vortec heads
In a comparison to both heads do the vortec outflow our Lt1
heads?? Or are both heads heads equal in flow???
I have been reading the vortec's are awesome for perfromace use.
heads?? Or are both heads heads equal in flow???
I have been reading the vortec's are awesome for perfromace use.
#3
Re: Lt1 heads VS vortec heads
Vortecs arent so much "awesome" as much as they are just a good value. The vortec head gives good performance potential at a very competitive price. Vortec's were modeled after lessons learned during the development of the LT1 head.
This article has a little bit of history behidn the vortec head in it:
http://www.chevyhiperformance.com/te...8_0507_vortec/
In stock form the LT1 head is superior... not only is the LT1 lighter being aluminum, but the stock Vortec head can only take .420 lift in stock form. You can get aluminum vortecs, as can you get modded vortecs that take more lift, but then of course your price goes up. Once you start modding them, I am willing to bet that both heads will max out around the same range.
It doesnt really matter too much for our cars though... you cant put a Votec head on your LT1, and can't put a LT1 head on a Gen I smallblock.
This article has a little bit of history behidn the vortec head in it:
http://www.chevyhiperformance.com/te...8_0507_vortec/
In stock form the LT1 head is superior... not only is the LT1 lighter being aluminum, but the stock Vortec head can only take .420 lift in stock form. You can get aluminum vortecs, as can you get modded vortecs that take more lift, but then of course your price goes up. Once you start modding them, I am willing to bet that both heads will max out around the same range.
It doesnt really matter too much for our cars though... you cant put a Votec head on your LT1, and can't put a LT1 head on a Gen I smallblock.
#4
Re: Lt1 heads VS vortec heads
Originally Posted by MAJESTIC
I have been reading the vortec's are awesome for perfromace use.
They are. For people with old style heads.
It's a little difficult for you younger folks to get a real feel for how far heads have come in the last 20 years. As late as the mid-late 80's, a set of 2.02/1.60 Angle Plug heads were still a big deal and undercut valve stems were practically black magic.
#5
Re: Lt1 heads VS vortec heads
Originally Posted by LameRandomName
They are. For people with old style heads.
It's a little difficult for you younger folks to get a real feel for how far heads have come in the last 20 years. As late as the mid-late 80's, a set of 2.02/1.60 Angle Plug heads were still a big deal and undercut valve stems were practically black magic.
It's a little difficult for you younger folks to get a real feel for how far heads have come in the last 20 years. As late as the mid-late 80's, a set of 2.02/1.60 Angle Plug heads were still a big deal and undercut valve stems were practically black magic.
#6
Re: Lt1 heads VS vortec heads
Originally Posted by MAJESTIC
In a comparison to both heads do the vortec outflow our Lt1
heads?? Or are both heads heads equal in flow???
I have been reading the vortec's are awesome for perfromace use.
heads?? Or are both heads heads equal in flow???
I have been reading the vortec's are awesome for perfromace use.
Here's a flowchart comparison between Fast Burn's and LT1's:
GM LT1
Valve Size: 1.94/1.50
Chamber Size: 58cc
Intake Runner: 170cc
Exhaust Runner: *
Flow Int./Exh.:
.100 72/53
.200 129/101
.300 180/136
.400 213/155
.500 214/165
.600 215/171
GM "Fast Burn"
Valve Size: 2.00/1.56
Chamber Size: 62cc
Intake Runner: 210cc
Exhaust Runner: 78cc
Flow Int./Exh.:
.100 62/55
.200 136/104
.300 187/133
.400 232/158
.500 266/180
.600 275/193
http://www.purplesagetradingpost.com...%20Fast%20Burn
Last edited by thesoundandthefury; 05-16-2006 at 08:58 PM.
#7
Re: Lt1 heads VS vortec heads
Originally Posted by
GM "Fast Burn"
Valve Size: 2.00/1.56
Chamber Size: 62cc
Intake Runner: 210cc
Exhaust Runner: 78cc
Flow Int./Exh.:
.100 62/55
.200 136/104
.300 187/133
.400 232/158
.500 266/180
.600 275/193
[/I
GM "Fast Burn"
Valve Size: 2.00/1.56
Chamber Size: 62cc
Intake Runner: 210cc
Exhaust Runner: 78cc
Flow Int./Exh.:
.100 62/55
.200 136/104
.300 187/133
.400 232/158
.500 266/180
.600 275/193
[/I
http://www.sallee-chevrolet.com/frame.html
#9
Re: Lt1 heads VS vortec heads
What are you building? The Vortecs with a little exhaust work may be suitable for your application. They remind me of the old Dart II's. Decent intake numbers but the exhaust flow needs some attention.
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