5.3 ok for a cc lwb 4x4 3500 ?

tim tanner · Nov 14, 2017

hey everyone i have a 5.3 thinking about puting it in my 3500 if i put it in my colorado ill have to change it to a 58x but id rather go in my big truck

i have 243 heads for it the cam i wanted to use is an isky triple12 and i wanted to turbo it with a bw s366

now if i put it in the truck im thinking going with a 383 i want that low end grunt

now my 243s are not stock ss valves pp 224/561 springs decked .010

now my q? is will my heads cam and turbo work well with a 383 im not looking for all out beast mode i just want a good turbo tow motor

thanks

GarrettGmc · Nov 14, 2017

Just for the size of the truck I'd step up to mayb a 6.0

skylark · Nov 14, 2017

The 6.0 will help with the low end grunt but the triple 12 and the 366 is a killer combo.

JScott23 · Nov 15, 2017

I ran a 5.7 in a CCLB. Took a strong sharp motor and turned it into the most gutless vehicle you will ever drive. Don't waste your time/money with a 5.3.

If you are determined to do LS, go 6.0. Personally i think those trucks are so long that you need the diesel torque. That's a big long truck, you need torque to power it. A 5.3 wouldn't end up working out well. A 6.0 would work better.

My personal opinion is that the CCLB trucks need big blocks or diesels. That low end torque is a must.

tim tanner · Nov 20, 2017

Thanks y’all ya if I had a 6.0 np if money was no problem 5.9 in a heart beat it’s what I really want down the road

My problem I now have a5.3 I have no use for I tried to sell it but no one would show up

Christian Steffen · Nov 21, 2017

Perhaps if you put a supercharger on the 5.3 it would hold its own, at least you'd have a better chance at low end torque.

Supercharged111 · Nov 21, 2017

I'd never do it. Cammed 5.7 with a Whipple in my 1500 is pretty good, but there's a reason my CCLB dually has a big block. You'd hate your life with it empty let alone having it loaded or pulling something

GarrettGmc · Nov 21, 2017

Wat do you use the truck for?

Christian Steffen · Nov 22, 2017

Maybe try reducing your price on the 5.3, and start looking for a 454 you can swap in, they can't be that expensive. Then if you really want it to be aggressive you can throw boost at it.

rolla711 · Nov 30, 2017

tim tanner said:
Thanks y’all ya if I had a 6.0 np if money was no problem 5.9 in a heart beat it’s what I really want down the road

My problem I now have a5.3 I have no use for I tried to sell it but no one would show up

If you have the money and don't want to get rid of it, bore it out. But they are right the weight of that truck will eat up that 5.3 rather quickly. Boost is gonna be your only friend to make that 5.3 move like you want it to.

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5.3 ok for a cc lwb 4x4 3500 ?

tim tanner

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