LS Swap in 78 Vette
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
The stock shifter is very sloppy so time for upgrade. Finally got around to reworking the shifter today. Waiting on a few other parts. Purchased the B&M quicksilver several months ago. Trying to keep the stock boot and console with out to much modifications. May cut the tunnel some for the cable to feed straight into the attaching point.
TECH Apprentice
Joined: Nov 2009
Posts: 367
Likes: 0
From: Kentucky
Sarge
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
After carefully measuring today, looks like I am going to fab a bracket and drop the B&M shifter a couple of inches so it clears the console.
Another while I am there. Removed 6 of the 8 body mount bolts. Just have the last 2 in the rear and need to reconstruct the rear mounts. The metal mounts are rusted out and the fiberglass housing will need some work to be able to support the mount. Only had one bolt so far that required the cheater bar. PB blaster on the bolts for a couple of days and will tackle the rear.
Another while I am there. Removed 6 of the 8 body mount bolts. Just have the last 2 in the rear and need to reconstruct the rear mounts. The metal mounts are rusted out and the fiberglass housing will need some work to be able to support the mount. Only had one bolt so far that required the cheater bar. PB blaster on the bolts for a couple of days and will tackle the rear.
Last edited by donnie_19; Jan 24, 2013 at 07:06 AM.
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
Got the Shifter mounted and everything on top looks good. Need to make a couple more brackets stiffen the side movement and cut a notch for the shifter cable. The last 2 body mounts are out, will have to reconstruct one of the rear body mounts with fiberglass and new supports.
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
Working getting the rest of the body mounts replaced. All but 2 of the 8 wear recognizable.
Have the body jacked up a couple of inches and will get the fuel line and fuel pump mounted . Will post a few more pictures when I get to that area of the restro.
Have the body jacked up a couple of inches and will get the fuel line and fuel pump mounted . Will post a few more pictures when I get to that area of the restro.
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
Fuel Delivery ? Going to start working on the fuel system since I have the body raised on the passenger side to replace the body mounts. I bought the Dorman tubing set with 3/8 and 5 1/6 line. I am using the LS 6 manifold which doesn't have a return line. I have the Walbro Pump GSL 392 that came with my Holley EFI. Is this pump adequate? Should I use the Combo Fuel Filter regulator to return the fuel to tank? Should I use part of the old steel fuel line that runs along the frame rail?
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
Did you hook up to the old fuel lines at the top of your fuel tank to install this set up? Did this fit with the spare tub in place?. I am going to start this part of the restro next.
Launching!
Joined: May 2012
Posts: 205
Likes: 2
From: Mobile, Alabama
http://www.summitracing.com/parts/vpn-gsl392
You need ~58psi. The 255 used by Q would be a better idea.
I used a factory Delphi (in tank) pump in my 74.
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
Looks like that pump would be borderline as max pressure is 60psi
http://www.summitracing.com/parts/vpn-gsl392
You need ~58psi. The 255 used by Q would be a better idea.
I used a factory Delphi (in tank) pump in my 74.
http://www.summitracing.com/parts/vpn-gsl392
You need ~58psi. The 255 used by Q would be a better idea.
I used a factory Delphi (in tank) pump in my 74.
Duh on my part. Turns the Holley 12-920 is the same part as the GSL 392. Contacted Holley and they recommended this pump for my set up.
Last edited by donnie_19; Feb 3, 2013 at 01:21 PM.
I hooked into the top of the tank like you said, but upgraded to fuel injection tubing. I think I used rubber tubing from the tank to the prefilter and for the lines in between the filter, pump, and regulator, and then from the reg back to the tank (return)...the line coming off the regulator to the fuel rails is braided stainless fuel injection line with the new Russell fittings.
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
I hooked into the top of the tank like you said, but upgraded to fuel injection tubing. I think I used rubber tubing from the tank to the prefilter and for the lines in between the filter, pump, and regulator, and then from the reg back to the tank (return)...the line coming off the regulator to the fuel rails is braided stainless fuel injection line with the new Russell fittings.
Yes, but it's really easy. I also removed the spare tire and holder at that time, and detailed the entire area. It looks really nice under there now. Plus you can see if your tank sticker is still in place if you drop it...
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
Fuel Filter Regulator? Planning to use the 82 vette FI unit. Remove the filler door and gas bib and then undo the hoses, remove the connector and bolts and pull the old fuel sending unit out. Then install a high flow in tank fuel pump 255 lph and a corvette regulator/filter combo so I can run a single fuel line up front and the return back to the tank. The 82 sender has a return hookup so that's not a problem. I can install all this and service without dropping the tank.
Serviceable like factory and no leaking or modifying the tank. I can then have my spare tire in place which is actually the not designed in safety in case of rear collision.
Is this the correct routing of the Wix 33733? Is the Dorman 800-159 correct for input from tank?
Got the front end suspension and steering installed today. Jeep box is in place.
Waiting on cam and will put engine back together next week.
Serviceable like factory and no leaking or modifying the tank. I can then have my spare tire in place which is actually the not designed in safety in case of rear collision.
Is this the correct routing of the Wix 33733? Is the Dorman 800-159 correct for input from tank?
Got the front end suspension and steering installed today. Jeep box is in place.
Waiting on cam and will put engine back together next week.
Last edited by donnie_19; Feb 16, 2013 at 08:50 PM.
Thread Starter
On The Tree
Joined: Dec 2012
Posts: 177
Likes: 0
From: Troy, MO
Made some progress on the vette over the weekend. Front end is together with jeep box. Transmission is mounted and shifter cable routed. Fuel pump is mounted in tank and tested, new Dorman nylon fuel line routed.
Launching!
Joined: Jul 2011
Posts: 209
Likes: 0
From: Detroit, Michigan
Your going to want to run some kind of internal baffle if your running through the pre existing lines dropping into the tank. You dont want to suck air if you get to a quarter tank and hit a turn. The best thing you can do is add a sump to the bottom of your tank and have your feed coming off that. This way your fuel will fall into the sump and not be able to come out, you will never draw air this way unless you run the tank completely empty. I did this to my tank, a bit more work, but well worth it for not having to reco something down the road.
I even had problems when I was lower on the fuel level when I was running the carbed 350. LS fuel systems move a lot of fuel.
I even had problems when I was lower on the fuel level when I was running the carbed 350. LS fuel systems move a lot of fuel.