Was looking to see if anyone had bored there 325 to a 365? Believe the 5.3 and 6.0 have the same stroke, different bore. 3.72 vs 4.00. Anyone heard of this?
Was looking to see if anyone had bored there 325 to a 365? Believe the 5.3 and 6.0 have the same stroke, different bore. 3.72 vs 4.00. Anyone heard of this?
04 Silverado Z-71 Extended Cab
Magnaflow, 10.4 TV 50 wires, tr-55ix, Synthetics, HID's, JL audio, 33.5", leveling kit, tuned, CAI, vette servo, cam, valve job, pacesetter. 9.3@77.5 and 14.5@93.4
06 2wd
custom cam, tune, 3.73's, servo, HID's, 10.4mm wires, long-tubes, CAI, magnaflow, 2.5" shackles, Circle-D 3200, UD, JL Audio 4.1, Alpine 5ch
i believe the 6.0 block is different to accommodate the bigger bore, so i'd say you should go with an actual 6.0
00 FRC - just top end, exhaust, and a hot-air intake
99 Sierra - 5.3 / 5spd
↓ click the pic for the build ↓
+1Originally Posted by zebra
Why try it and risk having issues when you could just get a 6.0 block thats already made that way?
T-RAV99 GMC | 5.3 | Skinny White Guy Tuned
Im almost positive they are the same block according to several gen 3 books I have read. They actually bragged about the 5.3 being better because it has the potential to be bored numerous more times than the 6.0. Of course I cant find it now but im still lookin lol
external dimensions are exactly the same. The 6.0L just has larger piston liners cast in place than the 5.3 engine.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
You can't bore the 5.3 to a 6.0 without having some serious issues. The largest you can bore the 5.3 is to a 3.905 which is a 346 (5.7).
2004 Silverado Crew Cab, forged iron 5.7, STS w/MP turbo, 10+ psi, FMIC, Tial 50mm BOV, Vic Jr, Snow performance meth, MTI Stealth cam .220/.220 .581/.581 115lsa, Comp chromoly pushrods, Yank TT3000 stall, LS1 Efans, 160 tstat, Trucool 40k trans cooler, 60# injectors, Walbro fuel pump, Patriot springs, Built 4l65E w/billet input & output shafts, Eaton posi, SD tuned...all installed by Klein North Automotive
I thought you could resleeve it just like the 6.0. They were sayin with extensive machine work you could make it over a 400 small block.
they dont resleeve an 6L block normally, just bore it out +.030". If you want big inches, buy a new L92 block and build on it or LS3 so that all you have to do is put pistons in.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
why not just build the 5.3 i know a guy with a pretty badass 5.3
THEY CALL ME G.
AZRAEL
2017 RZR 1000 2 SEATER
2023 RZR 1000 XP 4
2008 LTZ DURAMAX 3500
2023 300S 5.7
2023 BUICK ENCORE[/B]
The difference between winning and losing, is having a 2nd stage.
I see a lot of guys talk about swappin in the 6.0 and take out their 5.3 but is it worth it for that gain? Seems like you can just build up the 5.3
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