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Old 07-07-2017   #1
STATION
 
Join Date: Jul 2015
Location: KUWAIT
Posts: 53
Default Replacement Fuel Injector LT-5

Halo everybody I'm going to refresh my LT5 engine so I replaced my coils with Msd

And I changed my fuel injector with
I replaced the injector with 21 lbs
But the table it shows me 21 lbs below 9.7 compression and the LT5 eng is 11.1 compression ratio.

Which one is better for The LT5 is there any suggestions or recommended to go with ???


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Last edited by STATION; 04-27-2020 at 08:16 PM.
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Old 07-07-2017   #2
secondchance
 
Join Date: Aug 2006
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Default Re: Replacement Fuel Injector LT-5

My 378 mini stroker is at 12.5 and Accel 21 pounders are perfectly fine.
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Old 07-08-2017   #3
STATION
 
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Default Re: Replacement Fuel Injector LT-5

Quote:
Originally Posted by secondchance View Post
My 378 mini stroker is at 12.5 and Accel 21 pounders are perfectly fine.


I s/up my engine with accel 21 and it run fun .
The number on the duno 350 hp



And there is no problem.

But if i go with the table and install accel 30 lbs there's any problem..
Did anyone install 30 lbs



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Old 07-08-2017   #4
efnfast
 
Join Date: Nov 2011
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Default Re: Replacement Fuel Injector LT-5

I'm not the expert here, but don't forget you have two injectors per cylinder.
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Old 07-08-2017   #5
Paul Workman
 
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Default Re: Replacement Fuel Injector LT-5

8 years now on Accel 150821s. Runs perfectly from idle to 7600 rpm. Compression now 11.5:1 with full porting. Dyno'ed 432 hp at the wheels on pump gas. Stock idle = real SLEEPER!
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Last edited by Paul Workman; 07-08-2017 at 09:49 AM.
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Old 07-08-2017   #6
STATION
 
Join Date: Jul 2015
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Default Re: Replacement Fuel Injector LT-5

Quote:
Originally Posted by efnfast View Post
I'm not the expert here, but don't forget you have two injectors per cylinder.


Yes your right I forget that.
That means 21 *2 = 42 lbs
Thank you my friend [emoji106]


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Old 07-08-2017   #7
STATION
 
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Default Re: Replacement Fuel Injector LT-5

Quote:
Originally Posted by Paul Workman View Post
8 years now on Accel 150821s. Runs perfectly from idle to 7600 rpm. Compression now 11.5:1 with full porting. Dyno'ed 432 hp at the wheels on pump gas. Stock idle = real SLEEPER!


I'm just Confused [emoji23][emoji106]


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Old 07-08-2017   #8
Flyman 27
 
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Join Date: Apr 2017
Location: Wayne Illinois
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Default Re: Replacement Fuel Injector LT-5

Accel used to be a quality product. I read that their injectors are now made in China (??). Does it say on the packaging? If that matters to anyone.

I used to be a die hard MSD proponent myself. Used them many times since my first hot rod build in 1980. But now I read that they moved their coil & ignition production to China.

Over the years I have had loads of problems with parts made or rebuilt in China. I do everything I can do to keep away from them.
Does anyone know who makes coils for our cars that are made in USA?
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Old 07-08-2017   #9
tf95ZR1
 
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Default Re: Replacement Fuel Injector LT-5

Air/Fuel ratio looks a little rich....
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Old 07-09-2017   #10
Top Toy
 
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Default Re: Replacement Fuel Injector LT-5

I replaced my coils with AC Delco Professional Grade. Gold plated (corrosion proof) terminals. Don't know how the rest of the specs compare but they seem to work well.

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