How many of you guys are building or have built 5.7L's from iron 5.3L/4.8L blocks? Just wondering, i'm doing so right now and i'm not sure of what to expect. Just hoping this bastard motor runs like a scolded monkey.
How many of you guys are building or have built 5.7L's from iron 5.3L/4.8L blocks? Just wondering, i'm doing so right now and i'm not sure of what to expect. Just hoping this bastard motor runs like a scolded monkey.
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I'm building one right now too! I'll let you know but it should be pretty nice!
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 believe there was one at dyno day...with a good cam and trans about to die...think it made 376hp 406tq...dont quote me but i think thats wut he put down
Last edited by nonecktribe; 06-02-2009 at 01:14 AM. Reason: wrong numbers
06 silverado CC Volant CAI/ Corsa Sport exhaust
dynatech supermaxx headers/cats
LPE GT2-3 cam/ Comp 918's/ Rods
Eaton LSD 3.73's
IAT Shocks
DANNY TRANNY w/2800 TCS billet verter
275HP and 293TQ Pre Cam
314HP and 303TQ post cam
I'm wanting to do this. Either buy a v6, and run that for a bit and rebuild my 4.8, or get a 5.3/4.8 and have it built, and pull my 4.8
Can't wait to see yall's builds (just had to decide either try using you guys, or just use yall, yall fits way better!). Give me something to look forward to!
- Waiting for an lq9 swap - Super 40 center in dual out - battery swap to spare tire location - exhaust turndown -
Yeah that truck at the dyno day was WICKED strong. I thought he had swapped a ls1 in till I talked to him for awhile.
06 Intimidator SS- Tuned, CAI -DD
03 Silverado- Last incarnation 13.6... RIP
Ls1, Pnp heads, Polluter camshaft, spray, 4k stall on the way
"Seize the day like you seize your noodle" - Shin Chan
I built and installed quite a bit of iron 5.7's and 383's from the 5.3L block.
The 5.7 is a nice strong engine, don't expect turbo power, but you'll have a nice strong engine with a broad power band, depending on the heads and cam.
I like 10.5 to 10.9 cr with the iron 5.7L.
The NA 383 is really strong engine, ie 6.2L!!!
Nelson Performance
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'94 Chevy Truck: 8.9 et, 408 twins
If you bore the 5.3 to a 5.7, is it safe to still run 10+psi of boost or a big shot of nitrous? Just want to make sure the cylider walls wouldn't be too thin.
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
this is probably a stupid question but what is the diff in boring a 5.3 out and just getin a 5.7 form later years is the block different
The 5.7 LS1 is an aluminum block and the 5.3 is an iron block.
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
yea but isnt a 5.7 out of an old truck iron to ?
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