bottom end

gringo76

gringo76

New member
starting to gather parts for a upgrade build to my sy. going to be putting the 96 up vortec heads and so forth. as far as the bottom end what is the weak link in these. rods,crank,bolts, all the above? plans are to be a plus minus 400 hp and was going to put new bearing in bottom end for piece of mind and thought while i am in there if there is a simple up grade why not. arp everything and roll with it? what would you guys suggest? thanks
 
autoaddictions

autoaddictions

Active member
Re: bottom end

Well for that goal a stocker will get you ware you want. Just a freshing up will do it. 450- 500 you will need to start considering forged rotating assembly and 4 bolt main conversion. With that your good to 600+ some of us have gone as far as 750hp+. Id say your transmission will give out before your motor at 400. Id look into upgrading that as well.
 
gringo76

gringo76

New member
Re: bottom end

cool thanks for the tips. do they make bottom end girdles for these that tie the main caps together. sorry I am use to the mustang world, they make a big diff and keep the caps from walking around in the mustang world. still getting use to the chevy thing lol
 
dgoodhue

dgoodhue

BuSTeD 4.3
Re: bottom end

beaner76 said:
cool thanks for the tips. do they make bottom end girdles for these that tie the main caps together. sorry I am use to the mustang world, they make a big diff and keep the caps from walking around in the mustang world. still getting use to the chevy thing lol
Click to expand...

No one makes a bottom end girdle for the 4.3. Reread what auto addictions wrote. As you approach 500hp, the pistons and bearing become an issue. The rods aren't far behind.
 
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