gday lads, trying to find out what i would need to do to get approx 250-270 rwkw out of a ls1?? thru a auto. already got: -2 1/2 " exhuast with highflow cats and extractors? what else would i need? -cam?? -otr/ maff tune? And does anyone recomend any good work shops and any rough prices?? i know its like saying how long is a peice of string but wanna save a good amout of coin before i start rining around wasteing anyones time cheers

http://www.lsxgarage.com.au/

full exhaust and otr with mafless tune is around 220-240 rwkw. 25% underdrive would be next, then maybe cam etc, id worry about the auto but as ive been told ls1 autos start messing up around 170-180xxx especially once u work on the engine

For a genuine 270rwkw and 115-118ish mph car you will need a decent stick through an auto. I don't think an LS1 would make 250rwkw bolt on through an auto. Maybe go somewhere between 105mph and 112mph depending on how hard you rev it and the rest of the setup. I would most certainly get an OTR, possibly a set of valve springs etc. I would then do diff gears and possibly a stall. Then look at cam upgrade and a set of cleaned up heads. Money money money is all it is.

Yep def cam territory to get a genuine 250 or over. Otr/cam/tune/stall and like duke said diff gears at the same time. And put some money aside to rebuild the auto if your gonna give it a hard time. Or regular services and a big ass tranny cooler and hope for the best

read under my name! contact bretty at lsx garage, explain the situation to him and he will be more than happy to answer your questions! but these blokes ^^^^ above are pretty spot on, im at 380rwkw but it has cost me alot of money lol

Or if your loaded like Deano do what he's done lol

deano ya had brett fix ya problem with the belt up yat, if not hurry up ya twit???? get that fixed befor we race it mate or ull just keep sreading belts......... back to the topic......ya standard exhaust, otr and mafless tune will get ya around 220rwkw on average....any more than that man ya need to do a cam and springs then converter and gears...mate if i were u just put a converter in it with some gears and get a otr and tune done........ull love the amount of power that alone will give

i got vy ls1 6spd clubby with exhaust done.im over it at the moment.ive seen a few drive in drive out cam and tune packages for around the $3000 mark is this good value? would i be pushing it to reach 280 rwkw? ive been hearing up to 300rwkw from cam and tune from a couple shops.legit or a bit of fibbing going on?

Quote: Originally Posted by brawlr [View Post] Or if your loaded like Deano do what he's done lol was loaded but car has cost me a arm and leg and i dont even drive it! ---------- Post added 02-07-11 at 18:43 ---------- Quote: Originally Posted by boosted_wagon [View Post] deano ya had brett fix ya problem with the belt up yat, if not hurry up ya twit???? get that fixed befor we race it mate or ull just keep sreading belts......... back to the topic......ya standard exhaust, otr and mafless tune will get ya around 220rwkw on average....any more than that man ya need to do a cam and springs then converter and gears...mate if i were u just put a converter in it with some gears and get a otr and tune done........ull love the amount of power that alone will give still havent been back there mate but i need do! belt seems ok so far but pulley needs to still be adjusted by about 3-5mm i think! i needa go back anyway just been busy, got a rip shift to go in, needs a touch up tune as it wants to stall sometimes when i stop (pain in the arse) airbag light is on aswell! get a few things sorted/installed there before we race! bloody cars pain in the arse

cheers boys some good adive, me and my mate are looking into it. i got a fresh ls1 in my vx ss that i wanna cam etc. but my mate has got a vy ss auto aswell with 250ks still goes okay but he wants to get more power, will he need to rebuilt because of the k's or can he just get a cam and head package ( his alredy has otr and maffless with exhuast and diff gears)

Alot of people have cammed 200km+ cars and got good results. Just comp test it first and see what condition its in. Quote: Originally Posted by NASTY1 [View Post] i got vy ls1 6spd clubby with exhaust done.im over it at the moment.ive seen a few drive in drive out cam and tune packages for around the $3000 mark is this good value? would i be pushing it to reach 280 rwkw? ive been hearing up to 300rwkw from cam and tune from a couple shops.legit or a bit of fibbing going on? 3k sounds pretty cheap. Around 300rwkw will be a pretty big cam in a ls1. Heads will get you there easily.

im still running stock heads, stock diff gears and crappy exhaust! they are my next upgrades along with hsv/harrop brakes! ooohhh money

I'm running the standard hsv headers with a twin 2.5 inch. If I can pull 280rwkw I'll be a very happy lad

Quote: Originally Posted by MR.SUS [View Post] gday lads, trying to find out what i would need to do to get approx 250-270 rwkw out of a ls1?? thru a auto. already got: -2 1/2 " exhuast with highflow cats and extractors? what else would i need? -cam?? -otr/ maff tune? And does anyone recomend any good work shops and any rough prices?? i know its like saying how long is a peice of string but wanna save a good amout of coin before i start rining around wasteing anyones time cheers http://www.hp-f.com.au/ Some original photos have not been recovered yet.

Guys it really comes down to the engine as a package.. big cams in stock LS1's don't work that well. They sound nice though. Got to remember half of the 300rwkw cars never see a strip and a qtr of them go and run 112mph and maybe the last qtr make the mph they should with that kind of HP. As a good reference point, if your cars making 300rwkw and its not doing 118-120mph.. its just not making 300rwkw. Think 250-270rwkw for an auto setup and 260-280rwkw for a cam only change. Well setup these are still high 11 sec cars. K's are subjective as some engines have been well looked after and some haven't, just need to see how healthy it is and go from there. Whoever noted they have HSV headers, probably needs to give them the flick and move onto some better pipes.

GM Motorsport VX SS = 274 rwkw VX with SR Street Race Camshaft, HD Valve Springs, HD Pushrods, 3200 Hi Stall, Full Exhaust, Ramjet & Tune http://www.youtube.com/watch?v=NqkcMczSUHA http://www.gmmotorsport.com/home/?page_id=556 VX 375kw Camshaft Package not including Hi-stall, exhaust and otrcai Package Price Only $3,790- and like said earlier add a big ass trans cooler and diff gears, so your looking at alot more than $3K drive in drive out

I haven't had mine on a dyno but it was putting out about 207 RWKW before I got a twin 2.5 inch exhaust system welded onto it & new cats fitted, it did have a twin 2.25 inch sports system on it (in the VY SS Commodore),it's always had custom headers in it and I've fitted a high flow air filter into it. Yeah, with a stage 2 camshaft ,you would get those figures you mentioned, I tend to err on what get written up about some of the EFI stuff on the later model cars with OBDII diagnostics. Someone was trying to tell me my car was running too lean because the LTFT (long term fuel trim) was reading 12.45% on the right hand bank , the left hand was reading 8.59% , the cat on the left hand side isn't as big as the right hand one ,despite being 2.5 inches in diameter , so more air flows through the right hand cat, somebody reckons that the LTFT shouldn't get above 10%. After a long trip on the highway , the left hand bank ended up being 3.13% & the right hand bank ended up being 8.59% , so I do think what that person said was a fallacy, they said the mixture needed to be changed in the ECU. I said that because the scale ranges from -100% to 99.9% (lean to rich) with zero being the mid point, the STFT (short term fuel trim) is on the same scale but it usually remains at 0%, I've only ever seen the ECU "subtract" the mixture on the scan tool (lean it out).

i got 285rwkw in my vy r8, its got built auto from dtm, hi stall 3.9 gears comp cam 224/230 Comp cam pushrods patriot valve springs 90mm throttle body melling high flow oil pump 1 3/4 pacemaker headers twin 3 inch exhaust arp head studs mls head gasket kit also pulley kit and other bits and pieces its also got 190000km and comp is good.

im new to this whole LS1 thing, but how does this sound? stock LS1, standard bottom end, springs (possibly cam, bear with me) GT4202 on reversed VE manifolds (weld up at home job) LS6 manifold, mafless tune, possibly bigger throttle body upgraded timing chain, upgraded pushrods/lifters maybe? ARP stud kit, head/pistons/mains etc Standard coil setup Not sure on oil pump T56, twin plate clutch Chucked into my VL calais, thoughts? Reason for leaving standard cam is through some searching people have been saying the standard cams are decent enough for a turbo setup, but im sure a dedicated grind would be superior