Will BBK headers for a 2010 Camaro fit a '72 Chevy C10 4.8 swap?

[Low Elco]

There are 2 jeep tanks in 91- one is baffled for efi. Just to FYI.

[Matt Cramer]

Drove it a couple miles and realized the speedometer isn't working, but everything else is OK. Now it's time for dyno tuning:

[chuckmc8]

Matt, is that a dyno hooked to the hub?

[Matt Cramer]

Correct - that's a Dynapack hub dyno with the covers off, as the covers wouldn't clear the bed.

[Matt Cramer]

Found I hadn't filled the coolant properly - d'oh! Oh well, looks like nothing's damaged and it's full now.

The transmission is slipping a bit if you load it up for a couple minutes, and that's prevented me from getting a full tune. Some other issues I need to sort out:

The cab smells like gas and it appears the fuel level sending unit isn't sealed properly. Need to get that right and replace any remaining rubber parts in there with new ones. Long term solution will be that under-bed gas tank.

Need to hook up the temperature gauge and fix whatever I did wrong with the speedometer.

The wideband O2 sensor isn't working - I think I may have damaged its wiring when I dropped the exhaust to get a new brake line in there, as the factory ones were so close I was afraid of boiling the brake fluid.

Need to readjust the parking brake.

Some miscellaneous wire tidying up is in order.

Overall, the swap itself is pretty complete. The truck could use some other work too - maybe new front coils at the very least...

[mcbassin]

Looks like a very nice project. I have a 4.8 in my project too.

[dwcardfan]

Nice job on the truck. I was wondering where you got the manifold flanges for the exhaust manifolds. A friend of mine has a set of 2010 camaro manifolds but no flanges for it. I was thinking about buying them for my build. If i can find the flanges. I saw where you swapped to a cable operated throttle body what is the advantage?

[Matt Cramer]

Originally Posted by dwcardfan

Nice job on the truck. I was wondering where you got the manifold flanges for the exhaust manifolds. A friend of mine has a set of 2010 camaro manifolds but no flanges for it. I was thinking about buying them for my build. If i can find the flanges.

Summit part number PTE-H7265; it's currently going for $10.97. That includes both flanges.

I saw where you swapped to a cable operated throttle body what is the advantage?

I'm not using the factory PCM.

[dwcardfan]

Thanks Matt. I have a cable throttle body and was thinking about swapping to dbw. I thought it might be easier to mount pedal and not have to set up cable. How much trouble was it?

[Matt Cramer]

Compared to other parts of the swap, the cable operated throttle was easy. I used my stock gas pedal and a 3' mountain bike brake cable for the throttle cable. Made a bracket on the manifold (since the engine was originally DBW) out of some aluminum angle extrusion and a rubber isolated clip. To anchor it at the firewall, I cut the end off the stock throttle cable, drilled a hole, and glued the end of the bike brake cable into it.

[dwcardfan]

Thanks Matt.

[Hart_Rod]

Originally Posted by dwcardfan

Thanks Matt. I have a cable throttle body and was thinking about swapping to dbw. I thought it might be easier to mount pedal and not have to set up cable. How much trouble was it?

Originally Posted by Matt Cramer

Compared to other parts of the swap, the cable operated throttle was easy. I used my stock gas pedal and a 3' mountain bike brake cable for the throttle cable. Made a bracket on the manifold (since the engine was originally DBW) out of some aluminum angle extrusion and a rubber isolated clip. To anchor it at the firewall, I cut the end off the stock throttle cable, drilled a hole, and glued the end of the bike brake cable into it.

I think the biggest issue to overcome will be making sure you have a "tune" from a truck that has DBC instead of DBW.

[dwcardfan]

Thanks Hart Rod! I have a 2000 silverado that was wrecked and have the complete set up. DBC I will be using everything but a new harness. Thanks for all the help guys. It makes it a lot easier with all this information.

[khan1369]

I love the fuel pump install. What did you do for a return line? Any fuel starvation problems due to not having baffling?

I have a 5.3 sitting in my garage with a blown head gasket. I am in the process of fixing up the engine and getting it ready to install. I am on a tight budget and your fuel system seems to be the answer to my prayers. At least temporarily.

Pics of your return line set up would be great if you have them.

[khan1369]

http://www.customclassictrucks.com/t...i_systems.html

Think I will do something like this...

[Matt Cramer]

Originally Posted by khan1369

I love the fuel pump install. What did you do for a return line? Any fuel starvation problems due to not having baffling?

Stock vapor line with all rubber parts replaced. I've seen cases where this didn't work due to a restrictor in the line. On my truck, apparently it only had one in the rubber line to the charcoal canister.

I've heard the pump sputter on hard turns below 1/8 tank. Other than that, the biggest problem was sealing the vapors out of the cab, but that seems to be solved.

[Low Elco]

Originally Posted by Matt Cramer

Summit part number PTE-H7265; it's currently going for $10.97. That includes both flanges.

Thanks for this-may need it!

[mattfranklin]

I'm still leaning towards a stock sbc for mine, but you made this LS swap look easy and straightforward with great documentation and good tips to keep the cost under control. Nice work!

[Matt Cramer]

Thank you. This wasn't exactly a straight bolt in, but the problems tended to be things that can be solved with a little plugging away. If I had to do things over again, I would have put the engine stands in the V8 location, giving up the possibility of using the truck A/C compressor location in the future but trading that for better exhaust clearance.

[khan1369]

I am doing the same fuel pump setup you are. The only issue I am having now is how I want to wire up my fuel pump. How did you do yours?

[Matt Cramer]

I finally ended up using gromets and through bolts with ring terminals on each end.

[khan1369]

Yeah, that was my plan. I was just making sure you didn't have some other trick up your sleeves. Getting close to having my 5.3L in my truck. Can't wait.

[GAc10boy]

Originally Posted by Matt Cramer

The previous owner mentioned that it had been eating starters until he replaced the flexplate. This turned out to be foreshadowing: It ate another starter about six months after we got it. I pulled the starter, wondering if it was just another bad parts store rebuild or if he'd missed the root cause. Turns out the real problem wasn't the flexplate - it was the engine block, which was cracked at the starter mounting boss. I first thought maybe I should see if I should find another ex-circle track 350 for cheap, but then I saw it didn't seem to be too hard to get a LSx motor in there - and I found a 4.8 that had been pulled out of a 2007 U-haul box truck for $460, fully dressed. A/C compressor, manifolds, wiring harness, everything but an ECU. May not be the most powerful thing out there, but it's more power than a Goodwrench 350, and should be a lot better mileage.

Crazy thing is I just had a '76 c10 have the same flexplate problem then realized the block was cracked at the starter bolts. Never seen that before. Also, I almost bought a 4.8 from, I bet, the same uhaul guys down in South Atlanta. Glad to see it runs like it's supposed to. I was a little concerned about them sitting out in the elements - some uncovered. Really nice guys though and a great deal on the motor. I ended up going with a carb'd 4.8 set up.

Really great build and write-up! Nice to see someone else from GA on the forum.

[Matt Cramer]

Now I had the TH350 break down - it'll go in reverse, but not forward. Again, figured I might as well upgrade while replacing it, so I've picked up a used 4L60E. I'll get to work on that swap in the next couple weeks.

[mattcrp1]

I saw on another thread you mentioned the Microsquirt being used as a trans controller. Is that the game plan for the 4l60e?