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78w72 · 10-24-2019, 09:40 AM

Quote:

Originally Posted by cnc

Good to see u got out agin Ernie...to bad about the pump issue though.....something I'll toss in on the Tanks inc set up ....
I bought the tanks inc setup and installed it in my 73 .....works great
I bought the insert to weld into the tank to get the pump assembly lower into the tank for clearance ....hindsight ...for additional cost Leaks at the weld after it was welded by a reputable welder And the pissin around I wish I bought there tank already to go.....but is what it is.....
Oh and I wish I was a slow as u. On those runs.....lol

so you just bought the drop in pump assembly for your existing tank & it needed an extra insert welded to get the pump lower?

i have the same tank in my 72 & am debating on buying the drop in pump vs the whole unit with their tank. but if it requires an extra insert welded in i would opt for the whole tank set up.

Formulajones · 10-24-2019, 09:49 AM

There is a recess in the top of the Tanks Inc tanks that drops down about an inch or so. I would also imagine the recess that CNC had to weld in also came with baffling, at least I would hope so, because the Tanks Inc tanks are also baffled in this area.

The recess is there for a couple reasons that I can see. One is to have the pump reach the bottom of the tank as these Walbro pumps only come in one length, at least the ones I've been buying. The typical 20 gallon EFI tank from Tanks Inc is about 5 inches deep, as that's how they list them for their sending units. They do offer a slightly deeper version for the 2nd gen F-bodies, which I just installed in a car here. 22 gallon I think it is.
The other reason is that it allows room to have your fittings and lines on top of the pump, otherwise they would be smashed against the trunk floor.

I highly recommend opting for the whole tank setup. It's baffled, the sump is there ready to accept both the pump and sending unit, it's powder coated and ready to go. Plus it's cheap enough to make the decision easy.

If I have to do welding on a tank, either adding a rear sump or adding evap lines etc.... I always start with a new tank anyway, EFI or not. Just not worth messing with these 50 year old tanks.

78w72 · 10-24-2019, 10:45 AM

Quote:

Originally Posted by Formulajones

There is a recess in the top of the Tanks Inc tanks that drops down about an inch or so. I would also imagine the recess that CNC had to weld in also came with baffling, at least I would hope so, because the Tanks Inc tanks are also baffled in this area.

The recess is there for a couple reasons that I can see. One is to have the pump reach the bottom of the tank as these Walbro pumps only come in one length, at least the ones I've been buying. The typical 20 gallon EFI tank from Tanks Inc is about 5 inches deep, as that's how they list them for their sending units. They do offer a slightly deeper version for the 2nd gen F-bodies, which I just installed in a car here. 22 gallon I think it is.
The other reason is that it allows room to have your fittings and lines on top of the pump, otherwise they would be smashed against the trunk floor.

I highly recommend opting for the whole tank setup. It's baffled, the sump is there ready to accept both the pump and sending unit, it's powder coated and ready to go. Plus it's cheap enough to make the decision easy.

If I have to do welding on a tank, either adding a rear sump or adding evap lines etc.... I always start with a new tank anyway, EFI or not. Just not worth messing with these 50 year old tanks.

thanks for the info...

Torquewar · 10-24-2019, 05:32 PM

Wish I could go with you Ernie...not in the cards. Get that thing down the track...
I will chime in on the fuel system deal. I went to the Aeromotive in tank stealth system guessing 5 yrs ago. It’s been flawless but it does sit against the trunk floor so not perfect. To do it again , tanks system with there tank all the way. CNC did have a little war adapting his deal as he mentioned.

cnc · 08:13 PM

Quote:

Originally Posted by 78w72

so you just bought the drop in pump assembly for your existing tank & it needed an extra insert welded to get the pump lower?

i have the same tank in my 72 & am debating on buying the drop in pump vs the whole unit with their tank. but if it requires an extra insert welded in i would opt for the whole tank set up.

I bought the insert hoping to get the extra room I'm at 6inches depth and I still, had to space the tank slightly down....that was as low as u can go ....
The fuel pump outlet is very close the outlet Port of the assembly ....were u join the two pieces together with the small section of hose...
If u were to mount this setup directly to the top of the tank without the insert I bought ....I'm not sure how far down u would have to space it and not have neck interference issues at the rear Lic plate area ...plus longer tank straps...those I used the originals....u can see the one pic the fuel fitting is just above the top of the tank ....
I would do the tank unit from Tanks inc.....

ta man · 10-24-2019, 08:44 PM

Quote:

Originally Posted by Torquewar

Wish I could go with you Ernie...not in the cards. Get that thing down the track...
I will chime in on the fuel system deal. I went to the Aeromotive in tank stealth system guessing 5 yrs ago. It’s been flawless but it does sit against the trunk floor so not perfect. To do it again , tanks system with there tank all the way. CNC did have a little war adapting his deal as he mentioned.

All good..I guess this is the first year you, Chris and I never got together for track fun. I'm hoping Sparta is under good management next year and has more test n tune days for us little guys.
Heading to Cayuga Saturday should be a good day. Installed the new pump had to turn the regulator down..something sure was funky with the old one.

ta man · 10-24-2019, 08:49 PM

Quote:

Originally Posted by cnc

I bought the insert hoping to get the extra room I'm at 6inches depth and I still, had to space the tank slightly down....that was as low as u can go ....
The fuel pump outlet is very close the outlet Port of the assembly ....were u join the two pieces together with the small section of hose...
If u were to mount this setup directly to the top of the tank without the insert I bought ....I'm not sure how far down u would have to space it and not have neck interference issues at the rear Lic plate area ...plus longer tank straps...those I used the originals....u can see the one pic the fuel fitting is just above the top of the tank ....
I would do the tank unit from Tanks inc.....

Thanks Chris..I knew it was a little involved..totally agree on just doing the Tanks Inc deal.

78w72 · 10-25-2019, 09:34 AM

Quote:

Originally Posted by cnc

I bought the insert hoping to get the extra room I'm at 6inches depth and I still, had to space the tank slightly down....that was as low as u can go ....
The fuel pump outlet is very close the outlet Port of the assembly ....were u join the two pieces together with the small section of hose...
If u were to mount this setup directly to the top of the tank without the insert I bought ....I'm not sure how far down u would have to space it and not have neck interference issues at the rear Lic plate area ...plus longer tank straps...those I used the originals....u can see the one pic the fuel fitting is just above the top of the tank ....
I would do the tank unit from Tanks inc.....

thanks for the info & pics... will help myself & others avoid all that hassle.

cnc · 10-26-2019, 09:56 AM

No prob on the pics
Ernie get that thing down the track and let us know the outcome ...

77 TRASHCAN · 10-26-2019, 01:04 PM

Thanks all for information. Glad to know improved, reasonably prices fuel systems can be had these days. I am helping my brother with his 73 Camaro, currently, assemble the fuel system on his car. Got a new tank for it about 10 years ago, had it "sumped". My good buddy, that can weld ANYTHING, had a frustrating time doing to job. The newer tanks are likely an aluminumized steel of some sort. It looks great, but was a bear to get the job done, he said. He said he could not charge me for the job, because he feared of leak potential. He told use to use some kind of tank sealer coating in it (which we did).
We also bought an Aeromotive pump and filters, and regulator (return type system), which are quite pricey, but quality seems to be top notch (I've never heard anyone here talking about issues with one of their pumps...).
So, we are over committed $$$ wise to using this system. Now just a matter of plumbing it all up...I knew his exhaust was an issue. He has a very nice Flowmaster complete transverse muffler system. The muffler made it nearly impossible to route lines AND mount pump close to bottom of tank. Went to 2 DynoMax mufflers.
Man this is a lot of work, and money. (His money...)

ponjohn · 10-26-2019, 01:23 PM

Does that trough help gather fuel at acceleration?

ta man · 10-27-2019, 02:16 PM

Made it to the track yesterday..nice cool day. Good for et's. New fuel pump nice and quiet steady fuel supply.
First pass basically a duplicate of the last weeks..11.4/118mph...but this time I actually looked at the tach at the stripe..it was pegged..so with my tach being off slightly it was at least at 5800 rpm. So if one does the slippage math its about 24% not good.
I was expecting a bit of loss at the topend using this convertor but not this much.
I'm pretty sure its the convertor slipping..but maybe possible transmission issues as well?...but it shifts fine seems to work well no burnt fluid.
Since winter is here..I think my plan is swap the 3.42's in. Take the tranny to my tranny guy for an inspection and also send the convertor back to UCC for a checkup.
On another note..finally putting full safety equipment in the car, I need to be able to test the car at any track without issues and for my own safety.
I'm also going to register for DragWeek for 2020..since it is so close for me..its on my bucket list so nows the time.

PAUL K · 10-27-2019, 03:17 PM

Quote:

Originally Posted by ta man

Made it to the track yesterday..nice cool day. Good for et's. New fuel pump nice and quiet steady fuel supply.
First pass basically a duplicate of the last weeks..11.4/118mph...but this time I actually looked at the tach at the stripe..it was pegged..so with my tach being off slightly it was at least at 5800 rpm. So if one does the slippage math its about 24% not good.
I was expecting a bit of loss at the topend using this convertor but not this much.
I'm pretty sure its the convertor slipping..but maybe possible transmission issues as well?...but it shifts fine seems to work well no burnt fluid.
Since winter is here..I think my plan is swap the 3.42's in. Take the tranny to my tranny guy for an inspection and also send the convertor back to UCC for a checkup.
On another note..finally putting full safety equipment in the car, I need to be able to test the car at any track without issues and for my own safety.
I'm also going to register for DragWeek for 2020..since it is so close for me..its on my bucket list so nows the time.

Any outing to the track is a good one as long as you can pull it on the trailer or drive it home. It looks like you learned what needs to be done, it's never easy. Good job and thanks for the update.

ta man · 10-27-2019, 03:23 PM

Quote:

Originally Posted by PAUL K

Any outing to the track is a good one as long as you can pull it on the trailer or drive it home. It looks like you learned what needs to be done, it's never easy. Good job and thanks for the update.

I agree I look back on the years..experience is what we learn from. The good, the bad and the how the heck did that happen!
So this was a new track for me this weekend and last weekend..and it was great to go to a different track , see different cars and meet new people and share stories and experiences. Always a good time!

78w72 · 10-27-2019, 04:00 PM

what converter did you have before the change to the UCC? was the previous converter in there for your best/better 10.7 passes? if you didnt change anything else, sounds like its the converter hurting the times.

ta man · 10-27-2019, 04:09 PM

Quote:

Originally Posted by 78w72

what converter did you have before the change to the UCC? was the previous converter in there for your best/better 10.7 passes? if you didnt change anything else, sounds like its the converter hurting the times.

Continental 10 inch 3200