More HP? 58mm throttle body or 30lb injectors?
03-20-2006, 01:52 PM
#2
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Join Date: Feb 2004
Location: Moore OK
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Re: More HP? 58mm throttle body or 30lb injectors?
Injectors only make power if you are running out of fuel.
Injectors != HP
Whats your duty cycle at?
A big cam and stock heads will max out a set of stock injectors. I was pretty much maxed with my cc306.
Injectors != HP
Whats your duty cycle at?
A big cam and stock heads will max out a set of stock injectors. I was pretty much maxed with my cc306.
03-20-2006, 02:02 PM
#5
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Location: Western New York
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Re: More HP? 58mm throttle body or 30lb injectors?
TB will give you more. The gain is not worth the price for either IMO. Injectors wouldn't be a bad idea just for the sake of lowering the duty cycle.
03-20-2006, 05:52 PM
#6
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Location: KC; Where grandma drives in the left lane
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Re: More HP? 58mm throttle body or 30lb injectors?
I am pretty sure it was Chuck Riddeck (one of the smartest guys who ever sat foot on the internet) said that a car trapping less than 125mph would see little or no gain from a throttle body.
My blown and nitroused car has a stock throttle body because I believe him. In fact, I had a bigger one but sold it to buy some useful parts. Injectors will only help if you need them.
My blown and nitroused car has a stock throttle body because I believe him. In fact, I had a bigger one but sold it to buy some useful parts. Injectors will only help if you need them.
03-20-2006, 05:58 PM
#7
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Re: More HP? 58mm throttle body or 30lb injectors?
You have the LE1 heads, and a similar cam, and Lloyd himself recommends 30# injectors with that setup. It's a lot more likely you are pushing the injectors toward the limit.
If your engine doesn't need anything larger than a 24# injector, its unlikely it needs a 58mm TB.
If your engine doesn't need anything larger than a 24# injector, its unlikely it needs a 58mm TB.
03-20-2006, 06:03 PM
#8
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Location: Petersham, MA
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Re: More HP? 58mm throttle body or 30lb injectors?
Originally Posted by nosfed
a car trapping less than 125mph would see little or no gain from a throttle body.
03-20-2006, 06:04 PM
#9
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Location: Chicago, IL
Posts: 739
Re: More HP? 58mm throttle body or 30lb injectors?
I lost 2rwhp on my cam only setup when i switched to the holley 58mm tb. I noticed no other diveability issues when running the bigger tb with the ported Intake opening.
03-20-2006, 07:07 PM
#10
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Location: KC; Where grandma drives in the left lane
Posts: 550
Re: More HP? 58mm throttle body or 30lb injectors?
Originally Posted by Josh-'04 GTO
Since an average 3600# F-body needs 550 horsepower to go 125 mph in the quarter, I would be willing to bet a car with that much power would see a nice gain (~15-18 horse) going from a stock 48mm TB to a 58mm. Maybe someone has some dyno sheets to confirm (or shoot down!) this theory?
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