Hey guys wuz up I really dont post that often im more of a reader but I have a few questions and see if i could get some help. Well the 5.3 on my GMC started knocking and ready to pull it out. Well i have a ls1 rotating assembly with about 80k on it and want to get my 5.3 bored out to ls1 specs. Has anyone ever tried this before?
Oh mods on my 2003 excab GMC are the Thunder Racing 224 cam,pacesetter LT,efans,TB2600,cai,LS1 intake manifold,miled and self ported heads,and Flaco Tune...
2003 GMC SIERRA
EXCSB 2002 LS1
MTI X1 cam,LT,CAI,Efans,2600,SI/SO 3'' Magnahoe
Nada?
2003 GMC SIERRA
EXCSB 2002 LS1
MTI X1 cam,LT,CAI,Efans,2600,SI/SO 3'' Magnahoe
My buddy did it on his 2002 2wd (forged) and loves it. He is running about 10# on his SC and has had no problems. He DD it and beats the piss out of it everyday.
Hope this helps.
Do you think it will work great for n/a?
2003 GMC SIERRA
EXCSB 2002 LS1
MTI X1 cam,LT,CAI,Efans,2600,SI/SO 3'' Magnahoe
Guy at the dyno day with a good cam on motor did 376 to the ground I think. If that answers your n/a question
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
Well if it helps any the white truck in the vid had a 5.3 made into an HKE forged 346.
YouTube - Casper-08 10.6 Boost Only
I'm having mine bored out right now and putting forged internals in it. Should be pretty nice! You'll have to get some new heads for it though. I'm running 317's since I'm FI but you could get some different ones depending on the CR you want.
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
Get the block checked to ensure the cylinder walls are thick enough. Most blocks are fine, but occasionally one will have walls that are to thin.
2000 RCSB forged ls1, 4l80e, t-76
10.93@124 1.58 60'
Damn thats preety good is that with the stock ls1 pistons or aftermarket?Originally Posted by Show&Go
Well i was planning on staying with my 706 heads that way i would have a thighter chamber and probably mill em 0.030 and a mild port. That way they think its still a 5.3
2003 GMC SIERRA
EXCSB 2002 LS1
MTI X1 cam,LT,CAI,Efans,2600,SI/SO 3'' Magnahoe
ill find the guy that had the black truck and put down i think it was high 300's (like previously stated)... he seemed like a pretty cool guy and had a really nice truck...
i think his was a 5.3 bored to 5.7, cam and bolt ons... no clue on heads.... but put down some pretty stout N/A numbers
sprayedenali: i like catching, but not fishinglol...I wish you would never paint your truck...I bet it bugs them that much more that a primered up truck just soggied his Wheaties. good job buddy
DBTBSS: bring Tyler... we need someone to make fun of
MidnightRider: your right im gay
DamnYankee: my nana failed
DamnYankee: confused...if it can't keep up to begin with, how can it keep up
mitch cobb racing: ya, allen played with it for a while, HUGE difference
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