i am about to buy they texas speed 383 stroker kit for my 5.3L and im trying to figure out how much i need to have bored from my block. i know other people have done this before and looking for some much needed advice before i proceed to buy any parts.

 

The 5.3 is a 3.78 bore I think and the 383 is a 3.905 bored if that help u out

 

thats .125 can you bore the 5.3L that far safely? or should i go with a 6.0 build?

 

It's been done plenty of times and I know swift700 I think it is. Is running a tvs1900 on top of his 383

 

Go read up on the latest Car Craft Magazine, LS-power series. They just did a turbo on a 5.L 383 stroker and made 946HP/1006TQ. Also made a impressive 845/864 on 93 pump gas and meth.

How much HP/TQ you looking to make?

 

500-550 i plan to use the texas speed 11.0:1 compression balanced forged rotating assembly and their stage 2.5 heads and what ever cam they recommend. topping it with LT headers and high flow cats and a TBSS intake with a 90mm throttle body and a custom tune from Wheatley.

 

I think it would be wise to have your rotating assembly in hand so the machine shop can measure before they bore it.
But thats just me.

 

searched car craft online and did not find any articles but ill keep looking

 

500-550 Idk if its do able if I were u I get close to 11.5 like my 408 is u still can run premium and I'm hoping for those numbers out of my 408 and I have lsxrt 102/102 for it

 

Wait until you get the pistons to bore the block.