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05-24-2011, 08:11 AM
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#1
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Regular Member
Join Date: Jul 2010
Location: fort luaderdale fla.
Posts: 59
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Best heads?
hey i was wondering what are the best heads for a 93 lt1
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05-24-2011, 09:02 AM
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#2
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Administrator
Join Date: Dec 2005
Location: Memphis , Tennessee
Posts: 10,054
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depends what are you wanting to do with the car ?
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05-24-2011, 09:09 AM
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#3
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Regular Member
Join Date: Jul 2010
Location: fort luaderdale fla.
Posts: 59
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im doing a 383 stroker
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05-24-2011, 09:11 AM
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#4
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Regular Member
Join Date: Apr 2010
Location: Western MA
Posts: 3,441
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Also, depends on how much you want to spend. If money is no object buy some AFR's and send them out to be ported.
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05-24-2011, 09:18 AM
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#5
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Regular Member
Join Date: Jul 2010
Location: fort luaderdale fla.
Posts: 59
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well the shop that is building it got some patroit heads for it and said they finished and they called me back and telling me the heads are not goin work like they said would and now want me to get another 350(vortex os some bs) and put everything in it so im and the motor has been with them for 4 months and they have just been sitting on it so im goin to pull it out and finish it my self.
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05-24-2011, 09:20 AM
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#6
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Administrator
Join Date: Dec 2005
Location: Memphis , Tennessee
Posts: 10,054
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The AFR 227's are the best flowing head on the market untouched, however they are built for more of a supercharged/turbo charged application. If your just doing a 383 naturally aspirated you could easily get away with AFR 210's, auto or manual car ?
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05-24-2011, 09:21 AM
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#7
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Regular Member
Join Date: Jul 2010
Location: fort luaderdale fla.
Posts: 59
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its auto and i was planing on doin a 150 shot
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05-24-2011, 09:26 AM
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#8
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Administrator
Join Date: Dec 2005
Location: Memphis , Tennessee
Posts: 10,054
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Yeah AFR 210's would be just fine for your application, although to get anything from them you really need a bigger cam, I would suggest something with a split duration for Nitrous.
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05-24-2011, 09:30 AM
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#9
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Administrator
Join Date: Dec 2005
Location: Memphis , Tennessee
Posts: 10,054
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05-24-2011, 09:34 AM
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#10
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Administrator
Join Date: Dec 2005
Location: Memphis , Tennessee
Posts: 10,054
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05-24-2011, 12:42 PM
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#11
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Regular Member
Join Date: Jul 2010
Location: fort luaderdale fla.
Posts: 59
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is that trick flow kit good do i need to get the heads ports and thanks for all the help
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05-24-2011, 01:54 PM
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#12
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Administrator
Join Date: Dec 2005
Location: Memphis , Tennessee
Posts: 10,054
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The trick flow kit is fine as long as 430hp at the flywheel is enough for you, If you want anymore than that you will need a better head. And no you don't have to port anything you buy.
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05-24-2011, 02:50 PM
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#13
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Regular Member
Join Date: Jul 2010
Location: fort luaderdale fla.
Posts: 59
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ok thanks for all the help again and be fore i order it the 150 shot is safe on that kit
Last edited by blkz28; 05-24-2011 at 03:04 PM.
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05-24-2011, 04:46 PM
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#14
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Regular Member
Join Date: Mar 2010
Location: Louisville KY
Posts: 64
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id be more worried about your bottom end. dont want to spin a bearing or anything
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1994 Firebird Formula- Stock LT1, No trans- T56 Swap in progress, Moser Ford 9inch 3.70s, Chromoly Driveshaft, BMR UCA/LCAs, K&N Intake, Trickflow Intake Elbow, A/C Delete, and Corbeau Forza Seats
1998 Bonneville SE- for sale.
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05-24-2011, 05:44 PM
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#15
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Regular Member
Join Date: Jul 2010
Location: New Mexico
Posts: 913
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The Patriot heads were designed for standard old style small block chevy cooling system
the LT1 has reverse flow cooling.
LT1 History
Early heads Lt1 Casting 374 last 3 digits have more meat for porting used 92-95
Later LT1 Heads have slightly better flowing exhaust ports castings 561 harder to locate.
The 96-97 Late model LT1 heads also flow slightly better than the early ones casting 648.
The cast Iron 96 Impalla SS heads were the best flowing LT1 Heads flow approximately 20cfm better than the aluminum heads and weigh 40lbs more per pair.
For racing heres some comparisons of head flow rates:
Total Engine Airflow & Trick Flow LT1 Cylinder Heads | GM High-Tech Performance Magazine Article at Automotive.com
Last edited by Viper; 02-14-2013 at 09:49 PM.
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