350RWHP+ 5.3 S10 Build
 

Well, since I picked up a 5.3 recently I have been thinking about my plans for it. This motor will be going into the S10 in my sig.

Plans:
10.5:1 Compression 5.3
Milled 862's .030
224/224 112 (ish)
Pushrods/Springs
New Lifters?
Ported LS6 Oil Pump
LS6 Intake
Ported Throttle Body
LS2 Oil Pan/Windage Tray/ Pick Up
Current Performance Wiring Harness
Hedman S10 Swap Long Tubes
Circle D 2c
3.73's

Im looking for 350+RWHP

What do you guys think of the set up? Ideas? Thoughts? Suggestions?

Or not, lol.

What a noob setup.

What kind of dynamic compression are you going to have with the 224 camshaft? I would want close to 9.0:1 dynamic compression for efficiency with 5.3 liters.

its so perfect we dunno where to start.

I have no idea to be honest.

Pfft. :eyes: lol

Get an oil pan from an H3 that way you don't have cut up your pan or crossmember

If I had the engine all apart and was doing all of the work you mentioned, I'd definitely put new lifters in for some cheap insurance. A set of LS7 lifters is something like $120 from SDPC.

I like the setup, sounds good. What's the stall speed on a CircleD 2c?

It seems like a very "standard" setup. 10.5:1 is very common (LS6 stock CR), TR224 is used a lot on here, etc.... no issues that I see.

If it were MY setup, I would:

- do the entire valvetrain (lifters, pushrods, springs, retainers, and even a double roller timing chain)
- depending on planned RPM, a set of direct swap ARP rod bolts (these CAN be swapped without honing the rods)
- depending on mileage, cleanup hone/new rings and replace all bearings (allows for above honing of rods after bolt swap)

While my "suggested" stuff is "entirely unnecessary", it's easy (and cheap) to do before the engine goes in and provides some serious insurance.

Small points DozerDan saying the H3 pan are beyond my input so go find a list/step-by-step S10 swap guide to give you heads up on "swap specific" issues.

From what I remember reading, the H3 pan hangs down below the crossmember. Im lowered 4/5, lol.

I was wondering about using the LS7 lifters. I THINK the 2c is like 3200, but Im not sure.

I forgot to write them, but these were also being thought about. I am pretty certain I will run ARP rod bolts and head bolts.

are you going to port the heads?

For now, I believe Im going to jsut have them milled and get the swap moving. Then, once I got stuff working right, Ill have WCCH fix me up with some port work.

get 12point (nut) head studs instead.....

- they are stronger (higher yield strength)
- provide a more positive and even clamp load
- distribute the load into the block better
- removes all chance of damaged block threads
- actually make head installation easier (hold the gasket in place and align the head)

I can't believe I forgot to mention those in my reply (guess I just see them as a "no brainer" so never even give them a second thought) :lol:

sure it can be done,your off to a good start

Everyone think 350+RWHP is capable with this set up?

I don't see why you couldn't get (or at least close) 350RW. S10s have the "lame" 10bolt that f-bodies use so you won't have a lot of HP loss through the drivetrain. 5.7 LS1s with the same setup you are doing (stock heads, LS6 intake, headers) CAN see 400RW (through an M6).

JUST DO IT ALREADY! :)

Sounds good, but how do you plan on getting 10.5 CR??? Milling the heads .3 wont get you there...

Excellent point. It'll take a deep cut of .045" to get the c/r up into the mid 10:1 range (approx. 53cc finished chamber size). Of course that's where the compression needs to be to have a broad power curve. Reaching the 350rw mark is achievable given the cam, compression and intake choice. That combination should make for one quick S10 :D

Good luck,

Richard :)

We broke 350whp in a s-10 blazer with a 10:1 5.3l. Stock everything just a 224 on a 112 581 lift, dual springs and push rods. Shortie swap headers 2.5" y-pipe to 3" single, stock intake with just a small filter on the TB, unlocked converter. Look through the dyno section and you will find it.

SO to answer your question, heck yeah no problem!!!

Would 10:1 be better than running 10:5? Milling them .045 would make 10:5? Is that okay to mill that much.

tha harness you are speaking of from Current performance, is it a plug and play harness or do you have to hook anything up??? What price range is this harness?

Everyone I have talked to says it is literally plug and play, every wire is labeled and completely made to your specs. Price range I have no idea but 600-1200 depending on what you want.

10.5 scr would be better, more compression=more power. Remember that it's the Dynamic compression ratio that counts more than the Static compression ratio. The Dynamic compression ratio uses the position of the piston at intake valve closing rather than BDC of the crank stroke to determine the sweep volume of the cylinder. So as intake duration increases, DCR decreases. I'd think that the 224 duration cam that you've chosen would like a little more compression.

Not sure how much the heads can be safely milled though, but I'm sure someone will chime in with some info on that one...

http://i151.photobucket.com/albums/s...1244087239.jpg

http://i151.photobucket.com/albums/s...1244087188.jpg

I need to mill these 862's .045 to get to 10.5:1 compression. Im thinking about dropping them off tomorrow to get worked on. What kind and what size head gasket should I run?

If it were me, I'd go with a little bigger cam and a stall.

I like it a lot. I'll want to see it run at the track.

For more information:

Go here:

http://www.s10forum.com/forum/f213/l...mation-390967/

slap some 4.8 pistons on it while your at it. itll get you closer to the compression ratio you want. use some thinner head gaskets instead of milling those heads so much.

You can't put 4.8 pistons on 5.3 rods

have you tried??

Lol not because you can't do it

could you please state why???? im not doubting you, just curious. could you please post it in the following link so we are not trashing up the OPs thread?

https://www.performancetrucks.net/fo...d.php?t=440867

Sorry for my last few posts. I'm a retard!

in other words, 4.8 pistons will work in your 5.3 if you want the added compression.

Hmmmm,

Got my plan narrowed down a little bit further.
10.1:1 Compression 5.3
Milled 862's .030
Custom Grind TSP :secret2:
7.35 Pushrods
PRC Dual Springs
Ported LS6 Oil Pump
LS6 Intake
Ported Throttle Body
LS2 Oil Pan/Windage Tray/ Pick Up

Good luck on the swap, im gathering pieces for my sonoma 5.3 swap aswell.

Good luck on the swap bro, if you need some help putting it in lmk. Im starting to gather my parts next week

what do you need a ported oil pump for??