Meanjoegreen83 Posted October 13, 2021 Report Share Posted October 13, 2021 Ok so be got a ‘76 620 I’m looking at 4 swap options I am looking at. LQ9 ls 6.0L. (Already have and would think it would work good)(gas mileage not so much) gm 3800 (already have and measurements are spot on so it will fit)(better gas millage can be turboed for cheap)(also have supercharger for) 4.3 vortex (very reliable cheap (don’t have but have many parts for).( Can fit with a little shoe horning)( 17-25 mpg) k20a4 honda motor (don’t have but power for fuel economy is the best) has a great community for sourcing problems I’ve owned a few will fit with a trans adapter would like any and all feed back not doing a ka24de because mo powa baby but this is a full build truck as most of the truck is rusted away Thanks yall 1 Quote Link to comment
Stoffregen Motorsports Posted October 14, 2021 Report Share Posted October 14, 2021 22 hours ago, Meanjoegreen83 said: LQ9 ls 6.0L. (Already have and would think it would work good)(gas mileage not so much) - LQ9 is a truck based motor and the accessory drive is longer than a car based LS3. Plus the intake is taller. Iron block is heavy, but so what. Lots of potential and lots of swap parts available. Swap to a Corvette accessory drive, intake and add electric fans to gain clerance. I'll give it an 8 out of 10 for swap points. gm 3800 (already have and measurements are spot on so it will fit)(better gas millage can be turboed for cheap)(also have supercharger for) - 3800 is a great engine, and nothing like the 3.8L it replaced, but the 165 to 200hp it puts out is not great. A simple KA24E can easily make more than that. You may also run into transmission adapter problems. Its compact design and relatively modern engine management put it at about 7 out of 10 for swap points. 4.3 vortex (very reliable cheap (don’t have but have many parts for).( Can fit with a little shoe horning)( 17-25 mpg) - I freaking hate this motor. Yes, Vortec heads and injection made the regular 4.3 a much better engine, but it's still basically 7/8 the weight of a SBC with only half the horsepower. 4 out of 10 points. k20a4 honda motor (don’t have but power for fuel economy is the best) has a great community for sourcing problems I’ve owned a few will fit with a trans adapter - Nope. 0 out of 10. This is a Honda motor. Doesn't belong in a Datsun. I'd rather have a built L motor under the hood. Or even a KA24 of any variety. KA motors can make 300-400hp reliably, and naturally aspirated L motors can make 240+ (but will cost an arm and a leg). At least with a Datsun / Nissan engine you would be able to connect with the Datsun community. 2 Quote Link to comment
datzenmike Posted October 14, 2021 Report Share Posted October 14, 2021 3800. 25,000,000 made. Makes 200hp all day no sweat and 300hp with supercharger. Use S 10 5 speed. KA has to work HARD and ALL the TIME, to equal the 3800. 3800 will have monstrous low speed torque from the displacement. 4.3 ok but still a boat anchor. Honda is just a half breed, no one will talk to you or like you for it. LQ9 just wrong like a Honda. Getting ahead of yourself. Like talking about the sick rims and tires that will go on it. Get body in shape and painted. Interior. Up-grade the brakes* and suspension first. Maybe front coil over shock and cut the torsion bars and cross brace out of the way. *Better to decelerate faster than accelerate. Four wheel drums? you've got some work to do. 1 Quote Link to comment
banzai510(hainz) Posted October 14, 2021 Report Share Posted October 14, 2021 I say buy a nicer straight truck with the L motor and save a whole lot of heartache Quote Link to comment
Meanjoegreen83 Posted October 15, 2021 Author Report Share Posted October 15, 2021 That’s the thing it has the l motor in it hood was off of the truck for 10 years before I got it. And if you can break the motor free you can have it Secondly I’ve decided on the 3800 and yes at factory parts and with obs 1 they only make 180-300 home how’ever you may set them up. but with -cam -turbo/supercharger -springs -micro squirt ecu -forged rods and pistons -and the removal of the balance shaft they can comfortably make 5-600. It’s about knowing how to build your car and tune it and if it wasn’t for the truck having sentimental value and also being rare in my area I would but I got it to build not to throw together if this was about looking pretty and shiny I would have got a Porsche 911 or a 69 nova Quote Link to comment
Stoffregen Motorsports Posted October 16, 2021 Report Share Posted October 16, 2021 Well if you can afford a 911 or a 69 Nova (I'd rather have a 70 Chevelle myself), this project shouldn't be a problem. Also sounds like you've got some experience building engines, which also puts you ahead of the rest. The 3800 is a good motor, and not the worst choice for a swap. Good luck. 1 Quote Link to comment
Meanjoegreen83 Posted October 18, 2021 Author Report Share Posted October 18, 2021 anyone know where i can get thew (bar) under the grill /behind the bumper its a welded on peice under these if some can explain to me how to post a pic i will Quote Link to comment
Meanjoegreen83 Posted October 18, 2021 Author Report Share Posted October 18, 2021 oh and about the brakes i already have that covered i have a whole d21 pars truck that is my suspension donor and Sheetmetal donor for the truck. truck allready has the rearend from the d21 witch has the lsd from the pathfinder and will be swapping the rest out when my new floor pans get here and i get them welded up and pull the cab 1 Quote Link to comment
datzenmike Posted October 18, 2021 Report Share Posted October 18, 2021 The H-233 is way to wide for the 620 and needs to be shortened. With only 4.375 and 4.625 gear choices with LSD, the Hardbody VG 2wd came with better gears, 3.70 or 3.889 you can swap in. Quote Link to comment
Meanjoegreen83 Posted October 18, 2021 Author Report Share Posted October 18, 2021 How to I insert a picture Quote Link to comment
Meanjoegreen83 Posted October 18, 2021 Author Report Share Posted October 18, 2021 http:// 1 Quote Link to comment
Meanjoegreen83 Posted October 18, 2021 Author Report Share Posted October 18, 2021 Looks like it fits just fine for my application had to relocate the mounts but I would say it’s perfect but it’s not wide enough tbh. Quote Link to comment
Meanjoegreen83 Posted October 18, 2021 Author Report Share Posted October 18, 2021 http:// 1 Quote Link to comment
Meanjoegreen83 Posted October 18, 2021 Author Report Share Posted October 18, 2021 I need the super rusty bit Anyone have? Or know where I can get it. Quote Link to comment
]2eDeYe Posted October 18, 2021 Report Share Posted October 18, 2021 You can copy pasta the image directly into the post. That is part of the core support and not something that is easy to find by itself. Replacing the core support entirely is likely an easier job and it looks like that core support isn't that far behind that piece rust wise. Quote Link to comment
datzenmike Posted October 18, 2021 Report Share Posted October 18, 2021 I think I threw this in the back when I got rid of my '78. Quote Link to comment
5t341tH Posted October 19, 2021 Report Share Posted October 19, 2021 damn that's rusty. Maybe better to buy a new cab and swap it over? Quote Link to comment
Meanjoegreen83 Posted October 19, 2021 Author Report Share Posted October 19, 2021 19 hours ago, datzenmike said: I think I threw this in the back when I got rid of my '78. In the back yard? Or the truck? Quote Link to comment
Meanjoegreen83 Posted October 19, 2021 Author Report Share Posted October 19, 2021 12 hours ago, 5t341tH said: damn that's rusty. Maybe better to buy a new cab and swap it over? To late now lol already replaced 2/3 of the rust with new sheet metal 1 Quote Link to comment
Stoffregen Motorsports Posted October 20, 2021 Report Share Posted October 20, 2021 2/3? Let's see some updated pics? 3 Quote Link to comment
Meanjoegreen83 Posted October 21, 2021 Author Report Share Posted October 21, 2021 ill post them as soon as i get back in town 1 Quote Link to comment
EDM620 Posted November 3, 2021 Report Share Posted November 3, 2021 On 10/18/2021 at 11:13 PM, 5t341tH said: buy a new cab If such a thing was available LOL! Most likely gonna have to fabricate your own replacement for that. Quote Link to comment
datzenmike Posted November 3, 2021 Report Share Posted November 3, 2021 On 10/19/2021 at 10:35 AM, Meanjoegreen83 said: In the back yard? Or the truck? Truck.... I think. I ain't cutting the lawn just to find out. Quote Link to comment
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