khenry

iTrader: (3)

I will be replacing my 346 with a 6.0 iron block for my turbo setup. Is it worth buying the lighter BMR Kmember to offset some weight?

spaz1

iTrader: (9)

I'd say so but why not build a ls2 stroker instead??

NinetynineSS

iTrader: (1)

It seems as though the 6.0 iron block is close to 120lbs heavier than the LS1, do you happen to know how much wieght is saved with the BMR K member? I to am going this route, and considered also using the manual rack and brakes, for room and wieght savings.

CBIII

iTrader: (6)

I think the difference is closer to 80lbs. I think you save about 20 lbs with the tubular Ks.

khenry

iTrader: (3)

I heard 80 lbs. heavier between the motors, and I don't know how much lighter the BMR is

khenry

iTrader: (3)

I've been told the 370 will act better to the 76mm turbo

CBIII

iTrader: (6)

i think what he meant was "why not use an LS2 instead of an iron block and K member" The aluminum will block will be lighter (and potentially cheaper after figuring in price of the K member) than the heavier iron block.

spaz1

iTrader: (9)

Texas speed and perfromance has a great sale going on now. If you are set on 6.0l displacement then don't bother stroking it but In my opinion I would get the aluminum block and then you can eventually lighten it up some more with the crossmember.

NinetynineSS

iTrader: (1)

It's funny you say that, because that is what I recall hearing as well. Then I had seen written somewhere recently that the iron block was something like 213 and the aluminum block was 93. Though, I don't know through experience. It would be awesome if it was only 80.

khenry

iTrader: (3)

Yea, Texas Speed has their 6.0 iron block (short block) on sale for $2,900 ish.

barnat

iTrader: (59)

I have a 6.0 iron block with a BMR K member. I bought it for clearance issues though as it really opens up alot of space underthere (FOR EVERTHING) LOL As for the LS2 compared to the LQ9 6.0 iron block? LOL Ide rather have alittle more weight with the iron knowing that if i ever hurt the engine,,,, i can just have it punched out alittle, verses spending the major cash having it resleeved and all the added bullshit that goes with that,is half of why i bought an iron over the aluminium LS2 The other half is strenth !

spaz1

iTrader: (9)

Don't be scared of breaking the aluminum block with what you are planning and if you do wound it you can go up to 4.010" on the bore if need be.

barnat

iTrader: (59)

Yea,Once LOL

KILLER-LS1

iTrader: (18)

get the turbo K-member, saves weight and makes room for turbo piping! i think its KM-013 if i recall

98LSGun

iTrader: (2)

If hes boosting 6.0 all the way for long term usage with the turbo kmember

TopFlite

Yes it is worth it. Not only do you save some weight, but you also have a lot more room to work with in terms of space available for pipe routing.

barnat

iTrader: (59)

ACTUALLY ,,,If looking for even alittle more room up front on that BMR K member part #KM-013? ,,,,BMR just made me one,,,actually the very first one , which is this same part # ,but they installed the curved front turbo tubes in it from there turbo K member and it gave me a (whole lotta) more room then the regular LS1 K member and is stronger then the turbo K member IMO because its braced straight in the back were their turbo K member is curved front and back and heres some pics of it if intrested .I guess us APS guys are calling it the BMR APS K member (unofficially) LOLTalk to Lee at BMR if intrested in it
http://s243.photobucket.com/albums/f...MR%20K-member/

Devils Mentor

iTrader: (20)

What was the additional cost for the "APS" k-member?

Also I am more into road racing than 1/4, what is the difference between the drag, turbo and road K-member?


DM

kdavis

iTrader: (14)

just weighed a bare ls1 block and a bare 6.0 block. the ls1 block weighted 92 lbs and the iron block weighed 197.5. That means there is 105.5 lbs difference.

KILLER-LS1

iTrader: (18)

thats nothin, drop 25lbs with a k-member, move the 25lb battery in the trunk, and you only have about 50 more pounds in the front. most people prob wont notice the difference of 50 lbs in normal driving. hell, most of you have removed a ton of crap out of the engine bay anyways like egr, a.i.r., a/c, etc.

btw, most forged cranks are lighter too right? same with forged rods and pistons? im starting to wonder if you cant break even with an iron block relatively easily???

i wish i could weight my complete new motor, but i dont have a scale to put it on