460 RHS block build at Nelson Racing Engines

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Jul 29, 2010 | 09:04 PM

#21

Whistler

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Very nice Steve. .. Nice choice on the heads!

Jul 30, 2010 | 11:49 AM

#22

Steve1969LS1

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RHS just sent this over. Shows how the piston squirters will work with just four ports.

Jul 30, 2010 | 12:09 PM

#23

Steve1969LS1

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Quote:

Originally Posted by Whistler

Very nice Steve. .. Nice choice on the heads!

Yea, if they flow as good as they look then we're in great shape.. almost too pretty to use!

Jul 30, 2010 | 12:25 PM

#24

claytonisbob

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So that block allows for lifter changes without head removal?

This will definitely be my N/A LS dream engine. It will be pretty sick for Bad Penny to tear up the autocross and road courses... Not that Penny isn't already pretty capable.

Jul 30, 2010 | 12:29 PM

#25

RedVertTA

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Am I reading this right? 460 ci?!!!!!!

Jul 30, 2010 | 12:38 PM

#26

Steve1969LS1

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Quote:

Originally Posted by claytonisbob

Yea, there's plenty of room to lift the COMP vertical bar lifters. Which made me real happy since I didn't want to pull the heads to do a cam swap on the dyno. RHS said that with work you can make the plastic lifter trays work but it's not worth the effort.

And thanks for the comments on Penny, she's coming along.

Jul 30, 2010 | 12:39 PM

#27

Steve1969LS1

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Quote:

Originally Posted by RedVertTA

Am I reading this right? 460 ci?!!!!!!

Well, to be picky it's a 461...

Jul 30, 2010 | 12:39 PM

#28

3.8redbird

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mmmmmm

Jul 30, 2010 | 12:51 PM

#29

RedVertTA

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Quote:

Originally Posted by Steve1969LS1

Well, to be picky it's a 461...

I didn't even know that was possible on any lsx block, let alone a short deck.

Jul 30, 2010 | 01:11 PM

#30

Steve1969LS1

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Quote:

Originally Posted by RedVertTA

I didn't even know that was possible on any lsx block, let alone a short deck.

Well.. theoretically we could have gone as big as 4.165 on the bore and made a 463, but pistons are harder to source and it's not worth the hassle for another two cubes.

Jul 30, 2010 | 01:17 PM

#31

Stage7

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Quote:

Originally Posted by RedVertTA

I didn't even know that was possible on any lsx block, let alone a short deck.

My shortdeck shortblock is 468ci (4.185 bore), and I could have gone 470 even (4.200 bore), this was with an ERL superdeck 1 (shortdeck) block.

Jul 30, 2010 | 01:48 PM

#32

Unertl42

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I was reading about the RHS block earlier, I believe it said that it could go all the way to 502ci. Rediculous

This build is AWESOME! I'm subscribing, can't wait to see some results. Also, did I miss it, or what vehicle is this monster going in?

Last edited by Unertl42; Jul 30, 2010 at 01:58 PM.

Jul 30, 2010 | 02:21 PM

#33

Phil99vette

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Quote:

Originally Posted by Steve1969LS1

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)

Alot of the high RPM import guys are taking them out because the oil throws the motor off balance at high RPM. The Parts list looks good!

Jul 30, 2010 | 02:55 PM

#34

Steve1969LS1

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Quote:

Originally Posted by Unertl42

Yea, the tall decks can go that big. I didn't go that route because I didn't want to screw with an intake and mess with my current headers.

Here's the car it's going in:

http://www.youtube.com/watch?v=fZiMdUAM0sI

Jul 30, 2010 | 03:24 PM

#35

Ryne @ CMS

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Quote:

Originally Posted by Steve1969LS1

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.

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

i wouldnt run that heavy 2.200 solid steel valve with a hydraulic cam, and want it to rev high.... but i am just a fan of lightweight valvetrain i guess

Jul 30, 2010 | 04:43 PM

#36

LS6

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Wild build

Jul 30, 2010 | 06:10 PM

#37

Steve1969LS1

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Quote:

Originally Posted by Ryne @ CMS

i wouldnt run that heavy 2.200 solid steel valve with a hydraulic cam, and want it to rev high.... but i am just a fan of lightweight valvetrain i guess

In hindsight I should have ordered the hollow valves.. so many details it's easy to miss one. Might call Mast on Monday and inquire.

The rockers are nice and light at least..

Jul 30, 2010 | 07:48 PM

#38

Irish350

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Quote:

Originally Posted by Steve1969LS1

In hindsight I should have ordered the hollow valves.. so many details it's easy to miss one. Might call Mast on Monday and inquire.

The rockers are nice and light at least..

i was actually gonna ask about that, but i figured you went with them for strength (i havent done much research into valvestrength, but i know the stock valves in the ls3 heads im using have hollow intake stems)

I hope we get midbuild pics, i wanna see all the cool moving stuff before it gets shtuck in the car.

Jul 30, 2010 | 07:58 PM

#39

Steve1969LS1

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Quote:

Originally Posted by Irish350

Yea, I will update along the build.. will also let ya know what I decide on the valves.. it's a whole weight vs strength deal.. I'm not really look to do crazy revs. Most of my action happens from 3,000 to 6,000k