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motown 427 520 hp runs bad need some info

 
rvanderende
I love my Chevy Chevette!
Posts: 1
Joined: 09/15
Posted: 09/28/15 01:30 PM

1 8 4 3 6 5 7 2

is this correct because the engine is running verre bad

its  a new engine  

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Just Try It1
My first time was in a Chevy
Posts: 165
Joined: 08/14
Posted: 09/29/15 08:43 PM

there are TWO possible firing orders for big block chevy motors..

8.1L big block engines is different than a normal big block.The 8.1L FO is 1-8-7-2-6-5-4-3 where a 454/7.4L is 1-8-4-3-6-5-7-2

Despite the differences, however, an 8.1L camshaft will drop right intoa 454 like it belongs there – but it will only run four cylinders.


if you are running sequential fuel injection you will also need to change the injector firing order usually by re pinning them at the computer connector..

please let us know what you find..  

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rvanderende
I love my Chevy Chevette!
Posts: 1
Joined: 09/15
Posted: 09/27/18 10:59 AM

the problem was the msd   now it runs good   en go to the nekst step  a holley sniper  

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