yes the engine is way more common than the 8.1, more common means cheaper parts. 6.0 is in trucks, cars, and suvs... more parts can interchange and be more efficient. cam and a built top end 6.0 will be in the mid 4s with a good tune and thats well under 4 grand.
1989 RCSS 5.3/4L60E swap
- 224/230 .581.591 112lsa,
- 3200 Stall
- DJM 4/6 drop
- Nelson Tuned
Building the truck GM never did..
yeah, im looking at replaceing all rods, berrings, rings, and gascets, along with TONS other DIY machining upgrades, top of the line ignition system, and a mild cam, cold air intake, oversized exhaust, lighter valve train deeper oil pan (if possible) and mayber a few other small things. i would LOVE a supercharger, but i think all of that plus a used engine will be expensive enough.Originally Posted by T-Stark
The 8.1 is perfect for what you want to do. But I think it will be much more pocket friendly to keep the 454. Rebuild it, do whatever changes you want to do, and convert it over to MPFI (Edelbrock used to make this setup, not sure if they still do) and carry on.
Basically, the 8.1 isn't worth the effort of the swap.
Last edited by Frenchy; 10-13-2011 at 02:05 PM.
2006 SilveradoLittle Black Bitch
8.1s are perfect for boat anchors.
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
that is what i was trying to get at.
1989 RCSS 5.3/4L60E swap
- 224/230 .581.591 112lsa,
- 3200 Stall
- DJM 4/6 drop
- Nelson Tuned
Building the truck GM never did..
Maybe this will help http://hotrodlane.cc/Streetstories/81%20swap.pdf
disagreed. but your point has been noted... i will keep it in mind. i just dont think i can build a 6.0L to get more power then the 8.1L for less money... looking at the options, im between a diesel swap (not likely, but i have been tossing that idea aroung A LOT) a vortec 454 swap, or a vortec 496 swap because they bolt it.
its a TBI454, there are NO performace parts AT ALL. it has only 230HP, thats just not going to work. to get the kind of power i want, it would be cheaper and WAY eisier to just swap the engine and be done. i have allready priced all of the parts. its just not worth keeping anything other then the block at most, but it would be cheaper to buy a used vortec engine, and rebuild it, then buy all of the parts to convert it to a vortec.
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