Replacing internals for performance and rebuild

[StreetSoldier185]

Lets assume an L36 has around 100K miles on it, and you wanted to rebuild it but for performance. What exact internals would you replace? (i.e. cam, intake manifold)

[HokieBird]

Re: Replacing internals for performance and rebuild

Well if I were building an engine I would be building it for boost... So, I would go L67 bottom end, appropriate cam and accessories for my application, port and polish intakes, and maybe heads.

You may have to get more specific as too what you want out of the car for people to help you on this one.

[97rs4life]

Re: Replacing internals for performance and rebuild

yea are you looking for NA, juice, or like a boost motor? How much performance you looking for, streetable important? Need more details

[BobbyZ72]

Re: Replacing internals for performance and rebuild

if i was you, and i wanted more power, i would just drop a in a 5.7. i think it would cost a bit more, but i think it would be worth it.

[Turbo V6 Camaro]

Re: Replacing internals for performance and rebuild

what kinda performance? whats your goals

[viper98885]

Re: Replacing internals for performance and rebuild

Lightweight forged aluminum!

[Turbo V6 Camaro]

Re: Replacing internals for performance and rebuild

Lightweight forged aluminum!

WORD :banana: :banana:

[Den69RS96]

Re: Replacing internals for performance and rebuild

Unless your going to use nos, lots of boost, or race often, a stock bottom end should hold up fine. The bottom end doesn't build horsepower so wasting your money on forged parts if you don't need them is just that. . What are going to use the car for, street or race? Are you reworking the heads, bigger cam? If your changing cams, what are the max rpms? If your going to spin the engine higher than 6000rpms I would get the rotating assembly balanced. I don't care if you have a stock or forged bottom end, if you spin it high and its not balanced, something is going to shoot out the side of your block.

[slow6]

Re: Replacing internals for performance and rebuild

If your changing cams, what are the max rpms? If your going to spin the engine higher than 6000rpms I would get the rotating assembly balanced. I don't care if you have a stock or forged bottom end, if you spin it high and its not balanced, something is going to shoot out the side of your block.

scary thought. I would want to upgrade the valvetrain to handle higher rpms to reduce valve float, if that is possible with the cam selection.

[1998silverbird]

Re: Replacing internals for performance and rebuild

Unless your going to use nos, lots of boost, or race often, a stock bottom end should hold up fine. The bottom end doesn't build horsepower so wasting your money on forged parts if you don't need them is just that. . .

No it doesnt build HP but if built with the right parts it can free up some hp.. When I built my 3.8 I used diamond forged and coated pistons .020 over with the new L32 rods.. that combo was lighter then the stock combo which in turn freed up some hp and the bottom end would be able to rev higher with more ease then the stock bottom end.. With the 4.10's and my 125 my car would tach out much faster then with the stock bottom.. so the right combo for the bottom end matched with the right combo with the drivetrain could get you up in the upper part of the rpms were the HP is,faster then a stock bottom end.. Tq is what gets you out of the whole and my car stock didnt have that much problem with getting out of the hole but you need the HP to get you the rest of the way. I dont know about you but a stock motor 3.8 seems to loose its power when you hit 3rd.. it seems to take forever to get up in the rpms.. Hell even with the 4.10's and all my bolt on's it still took forever to get to 4th gear.. Now a lighter, properly balanced bottom end would get you up ther faster..

[1998silverbird]

Re: Replacing internals for performance and rebuild

if i was you, and i wanted more power, i would just drop a in a 5.7. i think it would cost a bit more, but i think it would be worth it.

You will need to get a motor, tranny, harness, and gauges.. thats some good money right there.. It took me less then 2000 to get the rotating assembly for my 3.8 and have the shortblock built..

[1998silverbird]

Re: Replacing internals for performance and rebuild

Lets assume an L36 has around 100K miles on it, and you wanted to rebuild it but for performance. What exact internals would you replace? (i.e. cam, intake manifold)

Like everyone else says.. what type of performance are you looking for?? 13's? 12's? 11's? If 13's I would just either do a mild head and cam package and freshen up the bottem end if needed.. That should get you to your goal.. For 12's I would freshen up the bottom end and get a good blower of nitrous cam with some good flowing heads.. for 11's I would do forged rods and pistons, completly upgrade your motor like what I did for my 3.8.. With it all said and done my motor came out to 2800.00 built!! It could handle 700 hp, 7000rpms with the only weak link the block..

[Turbo V6 Camaro]

Re: Replacing internals for performance and rebuild

Like everyone else says.. what type of performance are you looking for?? 13's? 12's? 11's? If 13's I would just either do a mild head and cam package and freshen up the bottem end if needed.. That should get you to your goal.. For 12's I would freshen up the bottom end and get a good blower of nitrous cam with some good flowing heads.. for 11's I would do forged rods and pistons, completly upgrade your motor like what I did for my 3.8.. With it all said and done my motor came out to 2800.00 built!! It could handle 700 hp, 7000rpms with the only weak link the block..

the block is not the week link............ and our motor have done 8000 rpm

[slow6]

Re: Replacing internals for performance and rebuild

you're calling an iron block weak? lol If ya say so

[Turbo V6 Camaro]

Re: Replacing internals for performance and rebuild

you're calling an iron block weak? lol If ya say so

i don't think he knows about intense 9 second car that has 900 crank HP lol