Lt4 in-tank fuel pump upgrade
 

Here are pictures of my original pump and the new zl1 pump. From the bottom to the hoses with little t adapters, it looks like there are completely different connections. Any help would be appreciated.

Attachment 950114
Attachment 950115
Attachment 950116
Attachment 950117
Attachment 950118

For others that might need help on this:

1. If you have a convertible, you will need two other parts.
2. JRE will have them available for you so you can call to get the actual part numbers, but the parts will include cross over tubing and an extender basket.


This is necessary because of the extra bracing on the convertible that caused GM to change the shape of the tank and the fuel pump also. With the two extra parts, you can get the ZL1 pump to work just fine.

Great info!
 

Thank you for the post, great info, in process of converting this summer!

I know ZZ Performance installed a LT4 fuel pump I'd recommend shooting them an email if you need help

update on the difference in those two black ports?