TBI Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.

Adding on new heads

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Old Apr 2, 2005 | 10:46 AM
  #1  
Z28cross-fire's Avatar
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Car: '94 Z28
Engine: LT1 350
Transmission: 4L60E/A4
Adding on new heads

i want to get new heads on my 305, but i have no clue what i should get and what would be best for my money. does anyone have any suggestions for a brand or type?
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Old Apr 2, 2005 | 11:29 AM
  #2  
90_WS6_Formula's Avatar
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Car: 91 Z28
Engine: L98
Transmission: 700R4
my current project started as an LU5 upgrade. I got a set of World Products SR 305 torquer heads
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Old Apr 2, 2005 | 11:46 AM
  #3  
azvolfan's Avatar
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From: Avondale, AZ
Car: currently thirdgenless!!!
It would probably depend on what you want to spend.

The World Torquer's are a good choice but fully assembled they will probably run you $800 - $1000 (ballpark).

A more economical head would be the 305 TPI heads (casting #416 for pre'87 and casting #081 for '87-'92). With some porting they flow pretty good. But with extensive work at a machine shop they will probably cost you just as much. You could try porting them yourself to save money.
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Old Apr 2, 2005 | 11:47 AM
  #4  
azvolfan's Avatar
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Car: currently thirdgenless!!!
Actually I just saw the you have a crossfire. I don't know if those heads will work with a crossfire setup.
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Old Apr 2, 2005 | 01:25 PM
  #5  
90_WS6_Formula's Avatar
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Car: 91 Z28
Engine: L98
Transmission: 700R4
the crossfire heads are decent... much better than swirl port.

don't pay more than $650 for a set of fully assem. WP heads

I got mine for $500
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Old Apr 2, 2005 | 01:56 PM
  #6  
Z28cross-fire's Avatar
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Car: '94 Z28
Engine: LT1 350
Transmission: 4L60E/A4
actually i have a crossfire engine, hence my sig and avatar . so do you guys recommend i keep them then? cause i really can't think of anything else i could do to add power to my car. it's already got a racing chip in it too.
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Old Apr 2, 2005 | 02:28 PM
  #7  
91RedFirebird's Avatar
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From: TX
Car: 91 firebird
Engine: 350
Transmission: t-56
I think its safe to say there is no such thing as a "racing chip"!
I would upgrade to a later modle ECU and do exhaust, maybie shorten the runners in the intake some, bigger cam, injectors, fuel pump and Chip burning stuff.
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Old Apr 2, 2005 | 02:31 PM
  #8  
Z28cross-fire's Avatar
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Car: '94 Z28
Engine: LT1 350
Transmission: 4L60E/A4
well it's not exactly a "racing chip" but it's a better one none the less. and for injectors....that's a tough one, have you noticed how the crossfire is set up? i don't know anyone who would sell replacement/upgrade ones for a crossfire. it's kind of like a carb/injector.
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Old Apr 2, 2005 | 05:19 PM
  #9  
91RedFirebird's Avatar
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From: TX
Car: 91 firebird
Engine: 350
Transmission: t-56
Some one smack me arpound if I'm wrong but I do belive they are the same as the camaro firebird truck 2bbl tbi injectors.
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