7 Things You Should Know About the RHS LS Block
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- เผยแพร่เมื่อ 28 ก.ค. 2024
- The RHS LS Engine block is arguably the best LS engine block produced by an aftermarket company. Lightweight, packed with options, and built to withstand over 2,000 horsepower - the block is also found in many serious street cars. During our trip to Late Model Engines in Houston, Texas, we decided to create a video on the 7 things you should know about an RHS block.
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As I learn about LS architecture I begin to see the initial wisdom GM instilled. The cross breathing is an excellent feature.
well, they just announced they're switching to electric. Leave it to government motors to ruin something great
I have a set of RHS Indy heads for my 360 magnum, I'm glad to see they are a company that really knows their stuff
I love how every one of these videos detailing American car products has the obligatory electric guitar music, watched a shop install a bolt in roll bar into a 12 mustang, same type of music
You know why that music is always in the background of these videos? cause MURICA fuck yeah
Hard plastic, eh
Very helpful! I sometimes wish I had opted for an RHS block vs. an overkill billet Noonan Race block. The RHS is undoubtedly strong enough and easier to fit-up. Heck, even easier than a DART NEXT 2.
Dang how much power were pushing to require billet block?
@@cali2468 I'm embarrassed to say but what the heck. I chose the billet block because of the wet sleeve design, nothing more.
Thank you for the video learned something new.
8) When go big (502ci), you need a billet crank. That'll blow up your build budget.
9) Most of the factory accessory brackets will require grinding to fit the beefier webbing and gussets on the outside of this block
10) The under-piston oil squirter make this an especially good motor to add crankcase vacuum too.
And the tall-deck block will fit in a Z06 with short motor mounts... barely.
Thats a pretty nice block
good job
Amazing 👏
I did not know about the doweled main caps, or the bay-to-bay breathing ports. Right now I'm investing in an ERL block. I contacted RHS about their block twice, but never received answers. If I had my questions answered, I might have purchased a block from them.
Iam sold
So in a nut shell if you want to build the biggest cubic inch LS possible this is the block to use?
I've built 8.2L into mine.
@@yzScott what is that? 502? I think that is my end goal. Boosted 502 in a c6 or cts-v
@@swappedoutZ71 Yes, it is 502 ci.
Going that big in an aluminum block, you don't want to boost it. If you're going to boost it, there is no need to go that big anyway.
@@swappedoutZ71 My boosted motor was built 7.0 in a (steel) LSX block. It's pretty trivial to get 1500 HP with a forged LSX. This RHS block is more for max NA builds. If you're going to boost the RHS, definitely don't take the bore past 4.125. But you'd be better off (and cheaper) with an LSX block for boost.
@@yzScott I'm not looking to run 30psi or anything crazy. The boost is honestly just for the cool/boss factor. Probably run it on like 6psi. But the added blower whine or turbo whistle is what I want. It would have a way different setup than what I'd use for all motor 502 build lol that's for sure. Much lower compression and a lazier cam. The boost would be to make power without going "max effort" while utilizing the cubes for massive tq production that's needed for a fun daily driver. Like an easygoing 700hp build but tq would probably be over 800. Max effort na 502 would be different, I'd try to squeeze out 850hp and it would probably make 650-700 tq with a higher recline than the boost motor, entirely different solid cam setup etc.
Nice vid. I'm not an LS expert but I find there isn't much block material between adjacent cylinders (ie: 3:00 mark)...Is there any danger of warping there? thx.
The cylinder liners are ductile iron and are very strong. There isn't much danger of warping. Boosted builds can safely go down to .200-inch cylinder wall thickness on the thrust side without any problems. Even at maximum recommended bore on one of these RHS blocks, you would still have adequate cylinder wall thickness to avoid any possible warping as the cylinder wall would still be well above .200 inch. The biggest concern is with cooling and cracking the cylinder walls when they are below .200 inch--especially when it is a tall deck motor. The taller the cylinder, the more rigid it has to be to prevent cracking and thus the more cylinder wall thickness should be use. However, there is nothing to worry about with the RHS tall deck even at its maximum bore size. They may look thin, but they are well within tolerance.
Thanks for taking the time to clear that up for me =) BTW how do they get the cyl liners in there, are they cooled first and then inserted? Can they ever be pulled out again and how? The engineering behind this block is truly astounding
This block would be great for a 2 stroke conversion build with ports for the cylinders and liners.
Thought they would use ductile iron instead of cast iron
What music is this?
Who made the music to this anyway?
How big can you go with bore space?
Max bore size is 4.165. Max stroke is 4.6. Max displacement is slightly less than 502ci.
Standard oil squirted... awesome!!
Siameased cylinders = uneven cooling since water-jackets are in contact with a much reduced area of the cylinders, especially the inside cylinders which are close to only half water-jacketed. Hot spots = warped cylinders = ring blow-by. Don't know how they get away with this; maybe the steel liners are made special to compensate ?
Three Things. First they say they have cast bore walls. Meaning these are not truly siamese, i'm guessing in large part to deal with heat issues. Also, aluminum alloy blocks really changed issues with siamese bores, as it moves heat so much more effectively, and largely the belief that siamese cylinders cause problems is a myth from 400 chevys, where OTHER issues caused the problem that got blamed on siamese bores.
RHS should do like Lexus and fill the casting of the aluminum block under vacuum versus pouring to eliminate the possibility air bubbles. This process would not only produce a better product for the customer but also save time and money. No need to scan the block for voids and cracks
Pretty sure they know more than you buddy
This is the design of the factory LS7. The LS7 definitely has some reliability issues, but none of them are concerns you raise.
Wouldnt a ductile iron liner be better?
+Dakota L absolutely, my sleeves began shifting at 1600rwhp
+SinisterC6
Please explain how sleeve shifting is because of liner material selection???
+patw52pb1 It has to do with the molecular structure of a poor troll attempt.
That's what they have
The DART LS Next is gonna kill this block. Just wait and see!!
+2quedogg not for crazy stroker builds though. Waiting for the LS Next 2 block. Now THAT is gonna be sick.
+Sai Namuduri in billet, om nom nom
SinisterC6 I've seen people on forums already talking about doing LS Next2 builds...am I missing something here?
Sai Namuduri Nope this is just the engine I want to put together
SinisterC6 I am confooz.
A Ford engineer design the LS read up on it
big question...why aren't these engines used in world of outlaws and other venues?
I thought Gen.I small block was the rules ?
should of done this with all the ls apps. why lag on your builds? do it right the first time.duh
Open deck blocks are prone to failure. A closed deck block is the only way to go in my book.
man those aftermarket guy sure do steal alot from gm
Randall Wyatt oh fuck off steal from gm, know anything about skilled workers or trades people? If it wasn't for the oems the mighty gm flexi block small block would have had a different history rocker arm (pressed in stud 🤣 pulling cam wearing is 60000 miles cheaply made POORLY machined. But thanks to the bs ubiquity the machinists and hot rodders the well designed (by a german) cheaply and poorly put tobether engines became very food. Companies dont have integrity and gm "stole" fro the jessel bros etc. By letting undeveloped garbage be developed. The aftermarket is where performance comes from so we can all pound our chests for our bow tie bandage buggy or whatever go wwe
@@petepependoski7708 Pontic was Dominant in the late '50's and early '60's they went straight to aftermarket venders for cams and intakes then put Pontiac part numbers on them .. Then Gm pulled out of racing and Ford was dominant for a while .. Why did GM pull out of racing they had 53% of Domestic cars sales and JFK wanted to break GM up .. they had heavy truck engines heavy Excavating equipment and majority of Locomotive engine market .. The Government should stay out of Private business picking winners and losers by Obama picking who he will loan billions to and never get paid back ..
GM has financial problems now .. some one commented that GM is a Pension CO that happens to make a few cars..
This Block sounds great but I don't even dare ask the price .. for me it seems just buying a whole complete LS-7 is about the only thing I can afford.. the Junk yards want too close to new price for their messes.. I need Trans clutch bell housing and accessories just the engine bolted to the trans with computer is $18,000 still need dry sump accessories .. headers motor mounts ect ..
It's not one of the best it is THE BEST!! mines a 502...scary power. Who needs boost when you make close to 800hp and 774ftq in a street car that only weights 2800 pounds and you can spray it at the strip....
Someone who wants to make 1500 or more hp
engine stand too low..
Ummm, stock Iron ls blocks take 1000hp.
Ummmm, not for very long.
You hang out with the wrong crowd then, 60-100 pulls on junkyard blocks no problem.
Iron blocks are good, but what if you want something strong and light weight, engineered for abuse...you cant go wrong with an aftermarket block.
@@ryanbarbolt3691 u aren't running over 1k hp dickwad
Yeah and 100 lbs heavier. Guys do this and add another 100 lbs with bigger transmissions as well so when I'm at the track I always feel like the other guy next to me has to drag my fat x wife along with him. lol.
And number 8 thing to know......they’re overpriced. Hahahahaha