11.50fox

iTrader: (1)

is it possable to bore and stroke a 6.0L aluminum or iron to accept a 427{7.0L} rotating assembly? i got a good deal on a 427 asembley and was wandering if it can be done and not be a oil sipper.also what heads would be best of this set up ls6 or 317 castings? i will drive the car around town a lil and to the track more than anything. is forged pistons worth it? going to spray 200 or so on it. or will factory replacements do? and where do i get the titanuim rods from? gm only?

Tainted

iTrader: (9)

no lol.

LS7 = 4.125 bore
LS2 = 4.0

way too much difference between the two, even using an ls3 block would be out of the question.

You can A, buy an ls7 block, or B have your current block sleeved (this is the best route)

11.50fox

iTrader: (1)

sorry had to edit my post... i meant bore and stroke a lq4 or lq9

Tainted

iTrader: (9)

Lq4/9 are the same blocks.

More than a 4" stroke and you get skirt wear issues

And even still, for the 4.125 bore you either are going to need to sleeve a block, or find an ls7.

11.50fox

iTrader: (1)

lol yea sorry i was at work when i posted it....lol then started thinking.............that wont work in any kinda way.

Tainted

iTrader: (9)

Also, if thats a true ls7 crank, then it is longer than the other ls cranks as well.

11.50fox

iTrader: (1)

well shoot.... looking to make 500whp, in my 79 fairmont and going to spray 200 or so.
whats the cheapest way to do it?

nobreaks254

iTrader: (50)

you can use the ls7 crank, you just have to have a machine shop shorten the snout or make a spacer. I shortened my own.

Tainted

iTrader: (9)

buy an ls3 shortblock, slight work on the heads, add a cam bam 500rwhp+

dekan513

iTrader: (2)

ya with heads and cam u can get a ls3 to 500 rwhp.

batboy

iTrader: (6)

I'd do the 6.0 iron block bored to 4.030" and stroked to 4" to make 408 CID. Very strong motor if everything is forged and can easily make 500 hp N/A. Bonus is it can handle a lot of spray.

Wnts2Go10O

iTrader: (12)

even better if youre able to use the light Ti rods..lol. :sigh: i remember when they we 50 bucks a piece or so.

Jake18

iTrader: (7)

its possible with a .060 over LQ4/9 and a 4.125" crankshaft. but not a very street friendly setup because of skirt wear and oil consumption. Its more popular to go with a 408 (.030 over 6.0 block with a 4" crank) or a 370 (stock LS crank and .030 over bore)

nastylx

Is it possible to stroke a 5.3 to 383? Im new to ls motors

bbautomachine

Do you have a ls2 block for sale?