line sizes
line sizes stock lt1 lines at the tank? feed and return..
stock ls1 lines feed and return
also stock ls1 size at the rail 99+ cars...
corvette fpr/filter outlet to rail size
stock ls1 lines feed and return
also stock ls1 size at the rail 99+ cars...
corvette fpr/filter outlet to rail size
Here are the specs on the actual connections at the sending unit.
LS1 F-body (plastic) supply & return BOTH 3/8"
LS1 '98 F-body (steel tank) 3/8" supply & 5/16" return
LT1 3/8" supply & 5/16" return
LS1 truck 3/8" supply & 5/16" return.
These are the actual tank connections that I just measured on units being built in the shop.
Hope this helps.
LS1 F-body (plastic) supply & return BOTH 3/8"
LS1 '98 F-body (steel tank) 3/8" supply & 5/16" return
LT1 3/8" supply & 5/16" return
LS1 truck 3/8" supply & 5/16" return.
These are the actual tank connections that I just measured on units being built in the shop.
Hope this helps.
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LS1 F-body (plastic) supply & return BOTH 3/8"
3/8" Feed
5/16" Return (Not really a return though since this is a returnless system)
Don't know what they are at the sending unit, but why would the hardlines change size from front to rear of car?
I noticed on my 99 plastic bucket, that the feed & return connections on the bucket are the same size, 3/8" od. The lines themselves that attaching to the fittings are 3/8" for the feed, and 5/16" for the return, although the o-ring connections are both the same size. I have the cut-off lines beside me right now.
In short: O-ring connections=same size 3/8", Feed line=3/8", Return line=5/16". Hope this helps.
In short: O-ring connections=same size 3/8", Feed line=3/8", Return line=5/16". Hope this helps.
Well, I cut my fuel access door last nite for Walbro install - and indeed both the lines coming off the top of the fuel bucket are 3/8" (use the GM quick disconnect method)
But the hardlines that terminate at the rear of the car that the flexible lines from the fuel bucket connect to are 3/8" and 5/16" as mentioned before.
If your running all new lines from front to rear - guess you could just keep them 3/8" all the way - don't know why the factory changed line sizes midstream...
-Jay-
But the hardlines that terminate at the rear of the car that the flexible lines from the fuel bucket connect to are 3/8" and 5/16" as mentioned before.
If your running all new lines from front to rear - guess you could just keep them 3/8" all the way - don't know why the factory changed line sizes midstream...
-Jay-
