1965 Skylark LQ9 Retrofit / Swap - Build Thread
#727
I thought the cross bolted mains (6) were the reason why the LS engines can take so much boost with OEM cranks. Why does DART revert back to a spaded 4bolt block?
confused,
Jim
confused,
Jim
#728
TECH Senior Member
#729
#730
I don't get how a 4 bolt mains and extra material is gonna help with LS' windage issues. Thanks for explaining
Mr Speedtiger,
Jim
Mr Speedtiger,
Jim
#731
TECH Senior Member
The open spaces along side the main caps help pass air between cylinders as pistons push air back and forth
#732
I was wondering if that was how but wasn't sure.
Thanks G.
Jim
Thanks G.
Jim
#733
Here are two photos. One of a typical LSx block and one of the LSNext. Notice how the typical LSx block creates compartments for each pair of cylinders whereas the LSNext block is all open on the bottom. The open arrangement is much better for windage.
#734
Thank Speedtigger. Do you plan to dyno the new combo NA first just to see what it does? (Please say "yes") This will have a lot of eyes watching for sure.
#738
SPEEDTIGGER,
Does this new block take the SBC chevy crank/rods or typical LS crank/rods ????
Does this new block take the SBC chevy crank/rods or typical LS crank/rods ????
#740
Speedtigger,
oh, ok. So this block is basically a reg. LS block except having a typical SBC 4 bolt mains within the deep skirted block?
oh, ok. So this block is basically a reg. LS block except having a typical SBC 4 bolt mains within the deep skirted block?