is it possible to put a 5.7 crank in a 5.3 block? and say .30 over, what cubic inch would i be?
is it possible to put a 5.7 crank in a 5.3 block? and say .30 over, what cubic inch would i be?
2005 GMC RST *sold
2006 Silverado SS with nawz
a ls1 crank and a 5.3 crank are the same, u can go to a 5.7 with the 5.3 block
74 Austin Morris Mini 1000 - Daily Coil Spring conversion, lowered, Disc Brake conversion
FOR SALE: 04 RC/LB Duramax -12 second tow pig, built Allison, Tune, and supporting mods
FOR SALE: 03 Silverado SS -DBRods built 40X, DP, Suspension. Going for fast
be sure to have the assembly rebalanced if you put the 5.7L crank in the 5.3L engine, they balance a little different due to the weight of the pistons.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Not very much. To get a 5.7 out of a 5.3, you have to bore it .125 over.Originally Posted by turbo4.8
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
ok, so a 5.7 and 5.3 crank are the same? the difference between the 4.8/5.3 and the 5.7 block are the piston size? just trying to clarify. see i have a 4.8 and thinking of throwing a 5.3/5.7 crank in it and putting larger pistons in. sorta a budget build for now. that some porting a mill job and a cam for the old truck that i never get to work on. if this is true, maby someone can help me out with a good combo in my ballpark of ideas
2005 GMC RST *sold
2006 Silverado SS with nawz
5.3, 5.7, 6.0, 6.2 all use the 3.62 stroke crank....4.8 is a little shorter...
Yep, crank and rods are the same on a 5.3/5.7. The only difference is the bore.
The 4.8/5.3 have the same bore but different crank as stated above.
If you're going to bore one, I'd do the 5.3 and make a 5.7 out of it.
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
If you have a 4.8, you can keep the block but the whole rotating assembly has to change. DIfferent stroke (4.8L =83mm, 5.3/5.7/6.0/6.2=92mm stroke), but the 4.8L rods are longer to compensate for the shorter stroke.
As for bores 4.8/5.3 = 96mm 5.7L 99mm (99.009mm to be exact).
5.3's are pretty cheap to come by, and would likely be less than the cost of machining on your 4.8L.
A "good" combination depends on what you want to spend, and how fast ya wanno go
Mike
http://kds-performance.com
94 Silverado Z71 SCLB 4.8L LR4 Daily Driver
93 GMC Sierra 2WD LS V8 Swap dun, run, rusted, stripped & junked
1979 Caprice Coupe - LS Swapped - 11.76@115.8
If you can bore a 5.3 to 5.7 with the stock crank, what can you get by boring a stock 4.8?
'00 Silverado 4.8L (Gone)
'11 Silverado 4.8L
5.1 ... not worth the money.
'00 Silverado 4.8L (Gone)
'11 Silverado 4.8L
Posting Permissions
Reply With Quote
