Search results

O
1999 K2500 Suburban repower options

Hello all, Have a much loved 1999 Suburban K2500 with the 7.4L (454) vortec. Original engine needs rebuilt (lower end noises, low oil pressure) but I don't have time to do it right now. Instead, I'd like to swap something in while I take my time working on the big block. Four options as far as...
- oifla
- Thread
- Oct 25, 2022
- Replies: 11
- Forum: 96+ Vortec Performance + Computer Swaps
O
454 (7.4L) swap / repair options - 1999 Suburban K2500

good morning all, the 454 (7.4L) in my 1999 Suburban (K2500) model needs to be rebuilt. it has 150,000 and several looming issues (likely head gasket, leaking injectors, and early signs of rod trouble). i'm considering several options: 1) rebuild the 454 with minor mods 2) rebuild the 454...
- oifla
- Thread
- Sep 8, 2020
- Replies: 110
- Forum: Engine Performance + Maintenance
O
NV4500 sources?

Hello all, I have a K2500 Suburban (1999) with the 454 and 4L80e. I'm not a fan of auto transmissions and I'm at the point of actively searching for an NV4500. I'm looking at potential donor vehicles and (unsurprisingly) I'm finding few 5 speed trucks with the NV4500. A couple of 6.5L diesels...
- oifla
- Thread
- Jan 8, 2019
- Replies: 8
- Forum: Transmissions
O
Cat and muffler options on a '99 Suburban (K2500, 4WD with the 7.4L / 454 engine)

Hello all, I have a stock 1999 Suburban (K2500, 4WD with the 7.4L/454 engine). The truck needs one of the catalytic converters replaced and I figured that while I'm into one, I might as well replace the other and update the muffler. ANy recommendations on catalytic/piping/muffler...
- oifla
- Thread
- May 15, 2017
- Replies: 6
- Forum: Engine Performance + Maintenance