broke1 Posted June 19, 2016 Report Share Posted June 19, 2016 I put together a bit of a different build for my truck after problems with the 408(2005 Escalade EXT with built 4l65 and nvg149 SSS transfer case,comes with factory 3.73's) Here's the engine I've put together Gen 4 ly6 6.0 block bored .065 over w/ tq plate to a 4.065" 6.2l 376ci engine Stock 30k mile ls3 flat top pistons/rods w/ ARP rod bolts 24x ls2 crank cut 10/10 Rods honed for ARP Rod bolt w/ correct bearings ATI 6% od balancer PRW platinum flexplate Ported/shimmed Melling m295 oil pump Mahle OEM rings with wider ring gap for FI/n2o Clevite P series rods/mains Cloyes Hex-a-Just 1x single chain w/ Torrington bearing Fel Pro cam retainer w/ non sunk bolt holes GM oil barbell ARP cam/cam retainer/crank/head bolts GM .051 LS9 head gaskets GM gaskets thru out GM valley cover kit w/ bolts and gasket GM front cover kit w/ cam sensor Advanced Inductions stock valve 226cc ported 243/799's w/o chamber work and minimal deck cleanup(64cc) Comp Cams 921 dual spring kit w/ Ti retainers Peak Speed Radical Ported TBSS intake manifold 216/224 .551/.551 114lsa cam from Howard's,degree'd straight up at 0 CHE upgraded stock rockers Ls7 lifters w/ ls2 lifter buckets Manton 11/32 Push Rods It will be 11.3:1 compression with the 64cc heads according to my math. I plan on using a 2600 stall Circle D TBSS style convertor as I've read great things(the PI multi disk actually ballooned and took out the thrust on the 408 the 6.2 is replacing) I didn't do this as an all out HP build,most of the parts I already had around(block,rotating assembly,heads,intake,etc) and I priced around a lot.I wanted a NA build that would have plenty of HP/TQ. Closest I could find was Vinci did a 02 ls1 Vette with AFR 205's and the 216/224 cam and made 401/395 with a stock LS1. Anyone ever done a similar combo? Looks mighty quite on here and I read NicD's dyno on pt.net but haven't seen many using cathedral heads on 4.065" bores and I have done tons of Google searching. From the tq difference bore makes from a 5.3 to a 6.0,I'm hoping the extra .065" helps even more. I'm honestly thinking it'll make 420hp/425tq (at the wheels)and peak around 6k. That will have my 6k truck in the 13's NA and be around 525hp at the flywheel. If not,I have a TBSS Nitrous Outlet kit waiting!!lol My thinking is high velocity heads will be good for bottom end. I find ls3 heads a bit "soft" down low in my truck. Predictions in combo or did I miss it? Quote Link to comment Share on other sites More sharing options...
broke1 Posted June 19, 2016 Author Report Share Posted June 19, 2016 Truck already has Kooks LT' headers,Corsa Cat back(all V banded) and a 4" dump. I plan on a single 4" in the future should the Corsa be holding me back. For now,I love the look and quiet sound at idle....go WOT and it flat out sings! Also has a Spectre CAI w/ a Green replacment air filter. Everything is new and up to date. Fuel system is a Denso in tank and I plan on running the factory TBSS 33# injectors if they will work. If not,I'll use the 65's out of the 408. Does have a 160 T stat and Katech idler...... Quote Link to comment Share on other sites More sharing options...
canadianVRss Posted June 19, 2016 Report Share Posted June 19, 2016 Sounds like a good daily to me. Should run good. I'm suprised the PI took a dump on you in the 408. I'm running a PI in my 408 but I got the anti balloon plate so hopefully I won't see that problem. Quote Link to comment Share on other sites More sharing options...
broke1 Posted June 20, 2016 Author Report Share Posted June 20, 2016 There were lots of problems with the $1200 PI convertor(the best PI makes) It was sent back to PI no less than 5 times(billet cover was too thick,wrong bolt pattern,etc,etc) Only good part about it taking out a $15k engine was Vicki,the owner of PI,promised me a brand new convertor.......but we'll see if she keeps her word. I have used many PI Convertors in the past but after my experience,I send folks to Circle D now.... Quote Link to comment Share on other sites More sharing options...
evandostert Posted September 29, 2016 Report Share Posted September 29, 2016 I have a very similar set up. about the exact same cam with plain 243's with 5 angle valve job and lsxrt. It's perfect and tame. I had to add smaller tires, lighter wheels and a full exhaust with long tubes to really wake it all up. If I were you in your shoes with 3.73's and big escalade wheels I would want a lower lsa like 114 + 4 or 2 Quote Link to comment Share on other sites More sharing options...
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