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I was making my own out of metal t’s and hose to work with my fast 102 was going ok until it was hitting the driver front corner I tried tapping the fitting down with some heat but it cracked. I know the later models the rears are blocked has anyone ran a hose from head to head in the rear without going to the front? Was thinking about going to the junk yard and getting the front style but running the hose in the back. I searched and haven’t found anyone doing this. It’s got to be better than blocking it completely off right?
They're located on the front because the engines when installed have an ever so slight rear rake, making the front the highest point. Would a front only fit, what if you cut it up and run your own hoses on it?
They're located on the front because the engines when installed have an ever so slight rear rake, making the front the highest point. Would a front only fit, what if you cut it up and run your own hoses on it?
I should have worded it better I meant run a hose in the rear head to head without going to the front. And running the regular one on the front. Haven’t heard of anyone doing that
Just connecting the backs of the heads serves absolutely no purpose. The idea is to run any steam/bubbles to the front. Running a hose teed into the rear line you describe would serve that purpose. Just running across the back of the heads does not.
Just connecting the backs of the heads serves absolutely no purpose. The idea is to run any steam/bubbles to the front. Running a hose teed into the rear line you describe would serve that purpose. Just running across the back of the heads does not.
that’s what I was wondering but wouldn’t it be better than just blocking them off?
This is what I was making but the fitting cracked on the driver front.
This is the garbage I’m putting on now had to order more hose because none of it is the correct length.
I asked about the hoses going side to side because I was thinking about getting the later style and just doing that I figured it might be slightly better than just blocking them. So side to side on the rear and the new style crossover on the front.
On mine I ran front-to-rear on the pass side only; across the back with a tee on the pass side, and across the front with tees on both sides. The one on the driver's side goes to the coolant bottle. (truck, in my case) I used PTFE line because it's so eeeeeezzzy to work with, black fittings like yours, and put split-loom such as for wiring on the lines, to make it mostly disappear.
that’s what I was wondering but wouldn’t it be better than just blocking them off?
Not really. The important direction is back to front which happens in the heads if rear lines aren't used.
There is no side to side flow even if you linked the back of the heads.
On mine I ran front-to-rear on the pass side only; across the back with a tee on the pass side, and across the front with tees on both sides. The one on the driver's side goes to the coolant bottle. (truck, in my case) I used PTFE line because it's so eeeeeezzzy to work with, black fittings like yours, and put split-loom such as for wiring on the lines, to make it mostly disappear.
Not really. The important direction is back to front which happens in the heads if rear lines aren't used.
There is no side to side flow even if you linked the back of the heads.
So don't know if this helps but on my LS swaps I mod the stock LS steam cross over tube to a -3 SS line. I cut the outlet tube off. Drill and tap the block to 1/8" NPT. Not using the rear ports that are sealed from the factory on my L92.
The -3 SS line is basically brake line so tons of different lengths and configurations fittings wise.
Pic attached is of my current project. No line attached but you can just see the 90 degree -3 fitting next to the PCV hose. Never had a failure.
So don't know if this helps but on my LS swaps I mod the stock LS steam cross over tube to a -3 SS line. I cut the outlet tube off. Drill and tap the block to 1/8" NPT. Not using the rear ports that are sealed from the factory on my L92.
The -3 SS line is basically brake line so tons of different lengths and configurations fittings wise.
Pic attached is of my current project. No line attached but you can just see the 90 degree -3 fitting next to the PCV hose. Never had a failure.
I thought about doing that but it won’t clear the fast intake.
I don't see that being an issue with the FAST intake.
The intake isn’t tightened down here but it was hitting the pipe and almost the top corner of the thing. It’s extremely close to the black one that’s on there now when I put the hose on. This picture doesn’t really show it unless I put the old one back on. It’s only the driver front that’s the issue.
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Coolant crossover question 
