5.3 aluminum block bored to 347
06-20-2017, 06:42 PM
#42
10 Second Club
Thread Starter
iTrader: (2)
Here are some cut aways I did a few years ago. Neither block had core shift issues, 5.3 on the left and 6.0 on the right. So to get to stock LS1 bore size which is 3.898 you would need to bore 0.118 out of a 5.3 to get there. Thats 0.059 off of 0.125 and leaves you with a 0.066 sleeve thickness. Thats 0.010 thinner than a stock 6.0 sleeve.
5.3 top of sleeve 0.196
5.3 sleeve thickness 0.125
5.3 alum around sleeve 0.261
6.0 top of sleeve 0.132
6.0 sleeve thickness 0.076
6.0 alum around sleeve 0.244
5.3 top of sleeve 0.196
5.3 sleeve thickness 0.125
5.3 alum around sleeve 0.261
6.0 top of sleeve 0.132
6.0 sleeve thickness 0.076
6.0 alum around sleeve 0.244
07-05-2017, 11:16 AM
#44
Just wanting to update my findings,
Just got off the phone with my machinist. When I dropped off my blocks for machine work, I left him an l33 block and an lm7 block, told him I wanted to use the l33 block if it's possible, if not we will go iron. He sonic checked and then bored the aluminum block. The l33 block sleeves is .100 thick at its thinnest point in the steel sleeve, not on a thrust wall towards the bottom of the sleeve, so we are going ahead with it. 347 l33.
Just got off the phone with my machinist. When I dropped off my blocks for machine work, I left him an l33 block and an lm7 block, told him I wanted to use the l33 block if it's possible, if not we will go iron. He sonic checked and then bored the aluminum block. The l33 block sleeves is .100 thick at its thinnest point in the steel sleeve, not on a thrust wall towards the bottom of the sleeve, so we are going ahead with it. 347 l33.
05-13-2018, 04:10 PM
#45
TECH Enthusiast
I think it is a figment of one's imagination. Lol........you can put a cam in your 4.8 and call it a iron ls1 stroker, nobody will ever know.....I have a 4.8 that runs harder than most 6.0's. Just a lil 220 cam and the right pushrods and springs....I don't think the motor knows it's size.....nor does the idiots looking at it!!!!!