New guy with 52 AD project.

[Groyd]

Have you figured out which throttle cable you're going to use. The 36" stock one I got with my engine didn't quite reach.

[52 Rat]

Originally Posted by Groyd

Have you figured out which throttle cable you're going to use. The 36" stock one I got with my engine didn't quite reach.

I'm using the stock lq4 throttle cable and a late model S10 pedal. I mocked it up and it is going to work out great for my application.

[Dads Burb]

I am installing an 04 5.3L into a 55 (2nd series) suburban and have been looking for a radiator. I found your build and think that may have taken care of my radiator search. Where did you get the fan mounting straps? Those are really nice.

Are your radiator inlet and outlet connections for the stock radiator hose diameter or for the LS1?

What type of fuel pump are you using? In the tank or external?

[52 Rat]

Originally Posted by Dads Burb

I am installing an 04 5.3L into a 55 (2nd series) suburban and have been looking for a radiator. I found your build and think that may have taken care of my radiator search. Where did you get the fan mounting straps? Those are really nice.

Are your radiator inlet and outlet connections for the stock radiator hose diameter or for the LS1?

What type of fuel pump are you using? In the tank or external?

I fabricated the electric fan mounts out of .50 square tubing. The upper hose is a mix if 88-96 lower Chevy 1500 5.7L radiator hose. I used a section for the top portion. The lower portion is a Mazda Miata by pass hose. The radiator has a different inlet size than the water pump so I ordered a aluminum coupling to join the two hoses. I spent several hours in the parts house trying to find a lower hose that would work. Again, the radiator inlet is larger than the thermostat neck. I could not find a hose that would accommodate the two size requirements so I was able to get the hose on the radiator neck with some anti seize. As for the fuel pump; I went with a Walbro in tank. I has a Buick Grand National gas tank with the sending unit and pump hanger so this made for a good set up.

[Dads Burb]

What are you going to do for the air intake? Will the center radiator hose interfere with it? Looks like a tight fit.

RATRODMILLER, sounds like you had the same radiator. What did you do for the air intake hose? Any pictures?

[52 Rat]

Originally Posted by Dads Burb

What are you going to do for the air intake? Will the center radiator hose interfere with it? Looks like a tight fit.

RATRODMILLER, sounds like you had the same radiator. What did you do for the air intake hose? Any pictures?

I'm going to purchase a tight 90 degree intake boot that mounts to the TB. My air inlet will be routed to the left side of the engine. It will have a slight rise leaving the TB and a slight bend around the alternator. Yes, it is a lot tighter that I had expected but doable.

[52 Rat]

I got the lq4 fired up this weekend and it sounds good! It has took three years getting to this point but it was worth it. I'm very pleased with the PSI stand alone harness and the tune that Steve Williams (Tuned by Frost) did on my ECU. I will upload a short sound clip in a few days. Now it is time to finish the cab, steering, wiring, etc. so I can drive it around. Getting the engine started is a big motivator to finish this project and move on to the 37 GMC.

[not2oldchevy]

Originally Posted by 52 Rat

I got the lq4 fired up this weekend and it sounds good! It has took three years getting to this point but it was worth it. I'm very pleased with the PSI stand alone harness and the tune that Steve Williams (Tuned by Frost) did on my ECU. I will upload a short sound clip in a few days. Now it is time to finish the cab, steering, wiring, etc. so I can drive it around. Getting the engine started is a big motivator to finish this project and move on to the 37 GMC.

Did you get your ECU from PSI or use the one with your engine?

[52 Rat]

Originally Posted by not2oldchevy

Did you get your ECU from PSI or use the one with your engine?

I used the ECU that came with the engine and had Steve (Frost) do the tune.

[truckzilla]

Lookin' forward to seeing some pics of your project there! That's a lot of motor for a truck that size.

[52 Rat]

Short clip of the lq4 running. Sorry, I was using my iPhone so the quality is not too good.

http://www.youtube.com/watch?v=JrE2u...ature=youtu.be

[oldman3]

sound good, doesn't it make you happy to hear it run the first time....Jim

[52 Rat]

Originally Posted by oldman3

sound good, doesn't it make you happy to hear it run the first time....Jim

Man you know it! I was like a kid on Christmas day. I had a big grin on my face all evening. It took three years getting to this point. Now I want to drive it but I have a lot to do yet.

[truckzilla]

Sounds good! I had to watch it a couple of times just to check out your frame work and rear suspension set-up. You're going to have one bad little 52 there when its finished my friend!

[52 Rat]

Originally Posted by truckzilla

Sounds good! I had to watch it a couple of times just to check out your frame work and rear suspension set-up. You're going to have one bad little 52 there when its finished my friend!

Thanks. Here is a pic as it sits now.

[truckzilla]

You are a heck of a lot farther along than I am with mine that's for sure! If i hadn't have already bought a 4 link set up for the back half of my POS, I would have gone the trailing arm route as well. Thanks for the pic!

[1950foru]

Looking good what measurement did u set your axle centerline in the front from the center leaf hole
Posted via Mobile Device

[52 Rat]

Originally Posted by 1950foru

Looking good what measurement did u set your axle centerline in the front from the center leaf hole
Posted via Mobile Device

Can't remember off hand but I used the measurment that was listed in the Heidts instruction manual. You can down load the instructions manuals on their website.

[Dads Burb]

OK, I really like your tank install. I just looked up a Buick Grand National fuel tank and it says it is 36 1/4" wide. When I look at the pictures of your install you have a lot of room between the frame rails and the tank. I have a 55 (2) suburban and it is only 30" clear inside from rail to rail. I'm trying to figure out how everyone is installing S10 Blazer or 70 Mustang tanks where the spare tire went. Is my frame narrower or did you spread your frame rails?

Never mind, I just looked up the frame spec's for both trucks. I always thought the frames were the same width.

I guess I am back to zero with the replacement tank research. Really don't want to spend a bunch of money for an aftermarket tank.

[52 Rat]

Originally Posted by Dads Burb

OK, I really like your tank install. I just looked up a Buick Grand National fuel tank and it says it is 36 1/4" wide. When I look at the pictures of your install you have a lot of room between the frame rails and the tank. I have a 55 (2) suburban and it is only 30" clear inside from rail to rail. I'm trying to figure out how everyone is installing S10 Blazer or 70 Mustang tanks where the spare tire went. Is my frame narrower or did you spread your frame rails?

Never mind, I just looked up the frame spec's for both trucks. I always thought the frames were the same width.

I guess I am back to zero with the replacement tank research. Really don't want to spend a bunch of money for an aftermarket tank.

Keep in mind, I removed the arch/spare tire cross member so the tank would fit properly.

[1952ssr]

Originally Posted by 52 Rat

Man you know it! I was like a kid on Christmas day. I had a big grin on my face all evening. It took three years getting to this point. Now I want to drive it but I have a lot to do yet.

I totally know what you mean, my 11 year was with me when I fired mine up for the first time. I don't who had the biggest grin. I felt like getting mine running was my last real hurdle, so now everything else should fall in place quickly. It was July (2011) when I fired mine up and was driving it in September (2011).

[Dads Burb]

I had planned on removing the cross member, but I don't have enough space between the frame rails.

I wonder if it is possible that a Grand National tank can be narrowed? I know there is a pan arrangement inside for keeping fuel around the pump intake, just not sure where it is. If I could remove 6" from the width I think it would work. Every tank I've looked at is either to wide 33" plus or really deep. The grand national tank is only 8 3/4" deep which makes it perfect, except for it being to wide.

[52 Rat]

Originally Posted by Dads Burb

I had planned on removing the cross member, but I don't have enough space between the frame rails.

I wonder if it is possible that a Grand National tank can be narrowed? I know there is a pan arrangement inside for keeping fuel around the pump intake, just not sure where it is. If I could remove 6" from the width I think it would work. Every tank I've looked at is either to wide 33" plus or really deep. The grand national tank is only 8 3/4" deep which makes it perfect, except for it being to wide.

I never did like the idea of cutting down a fuel tank. I've see guys cut holes in for a external fuel pump sump. I would not recommend cutting a GN tank. What if you turn it longways? You can arrange the filler neck to any position. I will be cutting the filler neck and moving it.

[Dads Burb]

There is only 36 3/4" from the rear of the frame rails to the rear end housing. I think I found an 87 Blazer tank that is 28 3/4" square. Might be to deep, but it has a filler neck that I think could be moved. I'm going to contact Spectra Premium (tank manufacturer) and get some more actuate dimensions.

You don't think the opening for the sending unit or in-tank pump opening should be modified?

[not2oldchevy]

What brand trans crossmember did you use & how much drop does it have? Thanks Bill