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88Stanger · 05-30-2017, 10:12 AM

So I am at that point where frustration takes over, so I stopped, took a minute to think and here is what I am doing.
I took off the Fitech and all of the MSD ignition components. I then did a compression check, here are the numbers:
1 - 180#s
3 - 195#s
5 - 192#s
7 - 190#s

2 - 180#s
4 - 190#s
6 - 192#s
8 - 180#s

The motor has about 30 min. on it. So these numbers may get a bit closer to each other, but otherwise they look good to me.
I was able to get an brand new MSD single wire HEI Distributor for cheap so I have that to install and an old Edelbrock 650 that I know is good. I will install these and try to develop a base line, get it running good then slowly replace/introduce the MSD 6AL box, and then the Fitech.

05-30-2017, 10:12 AM	#14
88Stanger Registered User Join Date: Mar 2015 Location: Washington State Posts: 1,644	Re: backfire through carb, need help So I am at that point where frustration takes over, so I stopped, took a minute to think and here is what I am doing. I took off the Fitech and all of the MSD ignition components. I then did a compression check, here are the numbers: 1 - 180#s 3 - 195#s 5 - 192#s 7 - 190#s 2 - 180#s 4 - 190#s 6 - 192#s 8 - 180#s The motor has about 30 min. on it. So these numbers may get a bit closer to each other, but otherwise they look good to me. I was able to get an brand new MSD single wire HEI Distributor for cheap so I have that to install and an old Edelbrock 650 that I know is good. I will install these and try to develop a base line, get it running good then slowly replace/introduce the MSD 6AL box, and then the Fitech.