460 RHS block build at Nelson Racing Engines
 

Well, I've been gathering parts for this for some time now and the block is finally getting machined.

First off this is a short deck RHS block build using really good stuff, so it's not "budget" or cheap.

Tom Nelson over at Nelson Racing Engines is doing the machine work and helping with the assembly. I will say the RHS block is REALLY nice. I spoke with them today and there's no need to line hone or do much work. We just need to bore and hone the block. But, we will check the hone just to see and we might deck it if the piston is to far in the hole.

Basic Specs:

RHS short deck block - 4.155 bore
Mast Motorsports 12-degree heads
Lunati Pro Crank - 4.250 stroke
Lunati Pro I-beam rods - 6.125"
Wiseco pistons, coated skirts, 11.4:1
ARP everything
FAST 102mm LS3 style intake
CHE bushed LS7 rockers
COMP vertical bar lifters, pushrods, timing chain, etc
Moroso oil pump

We have two camshafts to try.. one is really snotty.. both are hyd.

First pics:


http://i29.tinypic.com/2m3jzih.jpg

http://i26.tinypic.com/2mpertw.jpg

awesome build, awesome car, awesome name.

keep the pics comin

Snotty cams rule! That block is beautiful! Go solid roller....

Here's a look inside.. what caught my attention was the provisions for oil squirters.

The sad news is that they won't be out in time for me to use... but it's nice to know they are on the way. There are four ports and each port will support two emmiters.

http://i30.tinypic.com/2dgiyie.jpg

Opened up the Mast Motorsports "black lable" heads today and they are beautiful..

LS3 12 Degree 4.125 - 4.200 Large Bore CNC 6-Bolt
Solid Steel Race Valves 2.200 Intake
Solid Steel Race Valves 1.060 Exhaust
GM OEM LS7 Rocker Stands
Dual Premium Nitrided
Ti Dual Spring Retainer
Steel Dual Spring Locator
Machined Steel 7 Degree

http://i30.tinypic.com/bkc48.jpg

Nah.. hyd roller for me.. remember that I don't built drag cars, I need low and midrange torque

And I put street manners over making the most power possible. Hence the two cams, one to get a good number and one to run in the car.. although I be tempted to keep the bigger cam depending on the numbers.

If you guys have any RHS block questions fire away.. I have lots of pics.

Here's the Lunati 4.250 pro crank... :yum:

http://i30.tinypic.com/zyd76c.jpg

Very Nice !

Nice build none the less! Good luck with the build!

Nice looking parts you have started with. Good luck.

any particular reason you would like to use oil squirters on an N/A application? are you going to road race with this motor?

gotta love heavy metal, takes a few slugs to balance these big stroke LS cranks. Looking good.

Yea.. LOTS of mallory..

Because they are cool? lol

Actually we do road racing type stuff.. so anthing that cools is a good thing. and there really wouldn't be a downside to running them or even a huge cost besides the cost of the squirters (since the block is already ready for them)

nice biuld......keep them coming

Very nice build. What type of #s are you expecting?

How much did the Mast heads set you back?

That looks amazing, keep up the updates.

Ive always loved your car, very clean and built to perform. You aren't afraid to put it through its paces either it seems :thumb:. Can't wait to see the dyno graph and some new vids!

If you have to ask then... lol

But seriously, this is for magazine build story so we don't pay full retail. I know the heads are expensive, but I will say they look pretty top shelf. Pretty impressive flow numbers as well.

Near 700 hp and maybe 660 ft-lbs.. Hard to say since this is outside my usual LS builds.

My 454 made 650/624 and this one has better heads, a bit more displacement and a more aggressive cam.

what magazine? (i only get gmhtp.. so far)

Camaro Performers