Plan for 5.3 build

[baclay9]

I want some opinion on my build. I have been all over the internet planning and there is so much mixed information I just want to be sure I get this right so I am happy with the end result. This will be for a 5.3/4l60e combo in a 74' C10.

Stock bottom end
243 heads milled .030
stock L33 head gaskets (.051)
TSP 224R 112LS
Stock truck manifold
2800 stall

Does that seem like it will be a good performer. I want something with some power but don't want to get too extreme. I want to keep good street and highway manners.

Thanks for any help!

[indymachinist]

Do you mean stock truck intake manifold? or exhaust manifolds?

If you mean intake that is fine the truck intakes flow quite well. If you mean exhaust manifolds, I would consider headers instead. They will be worth decent power with a cam and 243 heads.

If you have an older lower performance 5.3 with dished pistons then milling .030 off the 243 heads will put compression back to stock levels. On a newer/HO 5.3 with flat top pistons milling the heads .030 will give a nice compression bump.

Over all it should be a pretty decent performer with any of the above possibilities.

[baclay9]

I was talking stock intake manifold.
They are dished pistons. I was trying to get compression to about 10:1

[baclay9]

Also, TSP is recommending a 2800rpm stall for the 224R cam but everything else I find online (forums) people are recommending a 3600 rpm stall. pretty big difference there...

[Wasted Income]

IMO, a 2800 stall isn't worth the expense. You won't feel it over stock. Hell, my Circle D 3200 feels stock to me. It's not loose at all...but that's what I need at my power level...I'd blow thru a loose converter.

3400-3600 with a good cooler would be my choice for your setup, assuming it's a play truck, and doesn't work to hard.

[indymachinist]

Originally Posted by Wasted Income

IMO, a 2800 stall isn't worth the expense. You won't feel it over stock. Hell, my Circle D 3200 feels stock to me. It's not loose at all...but that's what I need at my power level...I'd blow thru a loose converter.

3400-3600 with a good cooler would be my choice for your setup, assuming it's a play truck, and doesn't work to hard.

Which circle D did you get? I am in the market for about the same thing and some real world feedback would be awesome.

I remember you as "compressor surge" I believe from back in the central Illinois domestics days.

[Wasted Income]

Originally Posted by indymachinist

Which circle D did you get? I am in the market for about the same thing and some real world feedback would be awesome.

I remember you as "compressor surge" I believe from back in the central Illinois domestics days.

Ha! Hi Curt. You had the FC LS1 RX7, right?

According to my invoice, i have the "4L80 LS Pro Series Stage III 258mm 2B" from Circle D.