I want this

[tawss04]

Saw this on ebay

427 short block

by the way does anyone know what happend gear em up's truck

[packjh]

Its a hard decision save for supercharger or save for bigger motor.....what to do but i would like to have that as well.

[1slow01z71]

I dont think its a C5R block those main caps dont look to be the billet ones that come with a C5R block

 

For those pondering on what to do whether it be forced induction or more CI, more CI is by far the best option. I love my 418 for the tq that it makes and I can spray a 350 shot on it if I want. I have ridden in blown trucks and IMO they just dont compare to more motor.

[cstchevy]

I have this same dilema when I replace my motor, I have seen that and they can actually be had way cheaper. they can use the iron block 6.0 bore and stroke them that far I beleive, or it for sure can be done with wet sleeves now. everything is coming down in price finally for our LS based trucks.

[1slow01z71]

The 4.125 bore cannot be achieved without sleeves but you can go to a 4.100 stroke crank like I did and go to a 4.040 bore and achieve a 422/423 but the 4.100 stroke creates ALOT of problems. A months worth of extra machining, not ot mention special pistons for the long stroke and then machining on them to get it to all work. I mocked(sp?) the engine up 6 times ot get everything right if oyu paid someone to do your work it would be astronomical.