Fuel Injection Questions

redsMULLT1 · November 6th, 2005, 08:09 PM

I have a few questions about some fuel injection. I want to do a few things to my LT-1 like... a cam change (cc306), Long tube headers w/true dual exhaust, a 2,800 to 3,000 stall, and some mild head work. Then a set of either 3:73's or 4:11's.

What I am having trouble figuring out is... what injectors? What lb/hour? What fuel pump? What throttle body? What mm of throttle body? Stock TB is twin 48mm.

I know this is a chevy and all, but hey... I figure that it can't be all that much different.

2000Si · November 7th, 2005, 01:19 AM

Cams and exhaust aren't going to make your engine drink that much more fuel. I'd bet your stock injectors and pump will be fine unless you're planning on a blower way down the line. You could just port your twin TBs out to 50-52 mm also. That'd put more air into the engine.

mdvaldosta · November 7th, 2005, 08:29 AM

In the calculators section, at the bottom, you can input your expected horsepower and find a suggested fuel injector size.

redsMULLT1 · November 7th, 2005, 08:38 PM

Cool thanks guys. I'll try out the calculators!

fakesaleen · February 10th, 2006, 11:31 AM

check out the lt-2 specs go from there

fakesaleen · February 10th, 2006, 11:32 AM

bore it out to a 379ci and its an ls-2

November 6th, 2005, 08:09 PM	#1
redsMULLT1 Regular Join Date: Aug 2005 Posts: 150	Fuel Injection Questions I have a few questions about some fuel injection. I want to do a few things to my LT-1 like... a cam change (cc306), Long tube headers w/true dual exhaust, a 2,800 to 3,000 stall, and some mild head work. Then a set of either 3:73's or 4:11's. What I am having trouble figuring out is... what injectors? What lb/hour? What fuel pump? What throttle body? What mm of throttle body? Stock TB is twin 48mm. I know this is a chevy and all, but hey... I figure that it can't be all that much different.

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November 7th, 2005, 01:19 AM	#2
2000Si Enthusiast Join Date: Aug 2005 Location: In my house. Posts: 995	Cams and exhaust aren't going to make your engine drink that much more fuel. I'd bet your stock injectors and pump will be fine unless you're planning on a blower way down the line. You could just port your twin TBs out to 50-52 mm also. That'd put more air into the engine.

November 7th, 2005, 08:29 AM	#3
mdvaldosta Maintenance Man 2002 Mustang GT 11.47@120.58 Join Date: Aug 2005 Location: Valdosta, GA Posts: 3,945	In the calculators section, at the bottom, you can input your expected horsepower and find a suggested fuel injector size.

November 7th, 2005, 08:38 PM	#4
redsMULLT1 Regular Join Date: Aug 2005 Posts: 150	Cool thanks guys. I'll try out the calculators!

February 10th, 2006, 11:31 AM	#5
fakesaleen Regular Join Date: Feb 2006 Location: Port Huron, MI. Posts: 376	check out the lt-2 specs go from there

February 10th, 2006, 11:32 AM	#6
fakesaleen Regular Join Date: Feb 2006 Location: Port Huron, MI. Posts: 376	bore it out to a 379ci and its an ls-2

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