looking to build a nice street stroker motor.
out of my 5.3. bore it to 4". what would be a good
stroker kit to buy for a NA build ? can i go to 400 or
so cubic in. looking for about 500hp. 243 heads and a
VVT cam from TSP. compression about 10.8-11.5
new style trk int w/90mm T/B. LT headers

 

You can't go that far with the bore. The best you will likely be able to do is just over a 5.7 bore. You can stroke it to a 383 though.

SDPC has a few 383 short blocks on sale right now of thanksgiving.

 

Put a 4.100" crank in it with a bore of 3.905" and that would get you to 393 inches.

 

good prices on the SDPC stuff. I'm thinking of going that route

 

wonder what would be a good set of heads to put on that aluminum stroker for a forced induction setup. I'm thinking of going with a bigger blower. 65cc will keep compression at 9.5

 

Ok 5.7 bore it is, I like that 4.100 stroke, should
make good TQ in the mid range.

 

Ported 243s would be good I bet.

 

yes, i will have my 243 heads done. adding a set of
pro-flo over size SS valves and titanium retainers
with the new beehive .625 hi lift springs.
forgot to say this is a 2010 LH9 VVT all aluminum 5.3
it is the original motor out of my truck. only 30000 mi.

 

If there is anything we can do to help let us know. We have Gen 4 58X 383 aluminum stroker shortblocks in stock with free shipping and free Joe Gibbs break-in oil for $2695.00.

LS 383CI Short Block -15cc Dish With Free Shipping

 

Is this a iron block or aluminum? I dont think a crank that large would fit in a factory 5.3 iron block without the piston coming out of the bottom of the cylinder.