just curious... how hard is it to take a NBS 4.3 truck & swap in a SBC?
i did the 5.3 swap in mine & had to change over to all the LS stuff.
since the 4.3 is small block design, i know all the accessories would swap... how about the mounts? would the harness have to change?
i'm just wondering about a future project idea
00 FRC - just top end, exhaust, and a hot-air intake
99 Sierra - 5.3 / 5spd
↓ click the pic for the build ↓
Pretty sure the mounts on the 4.3's are the same as 350 sbc.. The harness would more then likely have to be changed out. I don't see it causing any issues, or being any harder then what you did already with your truck
JOHN
yeah... i remember Mykk had a 355 or 357 in his truck at one point, but i never saw much about the build.
it's just that V6/5 speed 2wd trucks are so freakin easy to find - it's be easy to get a platform to build on. i'm thinkin T56 while i'm at it...
00 FRC - just top end, exhaust, and a hot-air intake
99 Sierra - 5.3 / 5spd
↓ click the pic for the build ↓
I was wondering the same thing too. Will the computer still allow the thing to run ? How do ya fool the comp with air/fuel? Or do ya set it up race car style w/buttons and switches Ha.
Will the speedo still work?
the 4.3 motor mount pads are the same as the traditional SBC, but they're closer to the trans on the 4.3, so what you'd need is a set of plates from Advance Adapters. They run $80/pair. They're intended for SBC into 4.3 S-10, but it'd be the same deal here.
Only question is, why? Not like it's easier than the LS swap.
2006 SilveradoLittle Black Bitch
I dont understand why either, but different strokes for different folks.Originally Posted by sleeper1500
05 Silverado 3/4 drop and some tunes
already did that - click my sig pic
it would be a different stroke - 3.75"
mainly because how many people have a 383 NBS truck? one?
00 FRC - just top end, exhaust, and a hot-air intake
99 Sierra - 5.3 / 5spd
↓ click the pic for the build ↓
5-6... None of them have impressed me performance wise.
1969 Chevy RCLB C10 350/TH400 SOLD
2007 Chevy RCSB 4.8 4x4 LS SOLD
2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
2013 FORD CCSB F350 6.7 Powerstroke 4x4
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