MrEracer

iTrader: (3)

As the title says who is supplying long stroke cranks for 500 cid tall deck LSx blocks such as the RHS aluminum block? Looking for 4.5 or 4.6 inch stroke.
Thanks
MrE

lil john

Callies. Please don't use the LSX TALL DECK 4.375 crank is as big as you would want 2 use 4 that combo.

Briou

iTrader: (1)

I would give ERL a call and see what they would suggest

Burg1

Sonny Bryant cranks, Randy windburg cranks but you better have deep pockets, you defiantly get what you pay for though.

Jontall

I hope that your pockets are really deep.

lil john

oh forgot Lunati. ERL is good and have a custom stock block with a spacer. I spoke 2 Warren Johnson about the LSX block and the design flaws. RHS BLOCK with that crank/rod combo will set you back about 7500 just 2 start no PISTONS included.

Side note tree branch fell threw the roof of my Mallybu. Found a 83 Cutlass 307 ci not running for $450 now we got to remove and replace rear end and see what front end parts can carry over from the Malibu. We took out the seats and the tach,stereo etc..and thats all set up.

lil john

Steve @ RED is KING at anything wanting 2 be known about the LS block, factory or aftermarket 1st guy doing resleeve LS engines.

MrEracer

iTrader: (3)

I have built many sleeved LS blocks and I have built several LSX tall deck blocks so I am very familiar with the issues. I have also had RED do several dry and Darton sleeved LS blocks. I just finished my own version of a super deck 5.3 block (1/2" spacer deck, 468 cid) which is working great. It has a 4.25 crank in it and I had minor cam interference problems with that stroke. All these blocks have the same problem, which is the cam tunnel is not raised.

I am now wanting to build an aluminum 500 cid LS engine which requires the 'long arm' and I am looking at the RHS block, the big crank, and All Pro heads. The budget is $25K. As far as I could tell the Warhawk block does not have a raised cam tunnel and I need 4.185 bore as well.

I did manage to build a 492 cid LSX tall deck block which was fairly successful, but it required an offset ground crank and 2.0" rod journals and a 4.25 bore. I need to achieve 900+ reliable NA horsepower so the small journal and huge bore size is not acceptable which is why I am now researching the alternatives.

Thanks for all the response and advice.
Shirl Dickey
Shirl Dickey Racing Engines
Aguila, AZ

lil john

RHS BLOCK or ERL spacer block... I like the RHS me myself just wish they came with ductile sleeves for 4.20 bore 4.165 max is the factory max. The 496 combo is good but the LSX Tall Deck sleeves R 2 short also the cam tunnel problem to be realible over the long haul.

Zmg00camaross

iTrader: (11)

Think you would have windage issues unless your dry sump.

racer8088

Shirl,

Only the RHS Tall Deck block can do what you want to do and retain a normal cam journal and base circle size etc. Callies has a 4.600 crank scienced out that they've made work just fine in that RHS Tall Deck block. I've used several too. You can put even a wee bit more stroke in but it gets very dicey with oil galley clearance etc. depending on what rods and journals etc. The Callies, Bryant and others at this 4.500+ stroke level are usually billet CCW cranks and you often have to clearance the center main bulkhead for those center counterweights. I think ERL had some Lunatis too at that stroke level they might sell you as well that may still be reg forgings instead of billet like we used on their 500 CID deal at the school back in the day.

racer8088

Yes a dry sump with a lot of scavenge is probably a good thing on these 500 inch deals!

lil john

Thanks E for the info about the rod journal trick of more stroke on that Monster.(I thought 4.60 was as good as it got) 4.60 crank with turned down journals Hot Dam. I seen the guy with the resleeve 510ci Tall deck RHS. Thanks again for the TECH knowledge you got.
Go Houston Texans!

racer8088

No problem lil john. I know Callies doesn't like how close the oil hole from the mains to the rods gets to the mains fillet on anything over 4.600 so that ends up being a limit of sorts as the hole needs to miss the lightening and gun drilled holes too. That's even at 2.100 rods and the normal LS mains.

Bryant will do it too but it might need some weird drilled holes as well to get much more stroke than that and stay reliable I guess. I'll leave that up to them at Callies and Sonny Bryant!

My computers blew up twice before moving and I lost a lot of my damn pictures of this deal or I would post them of the clearance at 4.600 on the RHS everywhere but it was still not that bad at least with the stuff we used at that time which I think was Compstar rods on 2 and Callies Billet Ultra rods on another.

Kingsize

iTrader: (13)

Hmm. Good information Erik. How large of a bore would you feel was safe on this block for a max effort N/A application? I've been running this 4.200 bore LSX for quite a while now without issue, I just can't get the stroke in it I desire.

lil john

King the RHS recommends that you use 4.165 but I know of 2 people who have taken it too 4.185 N/A... (I'M SURE ) those sleeves are not ductile steel so as they say proceed at your own risk.
google 510 LSX and he's resleeving that RHS combo.
BTW Spike TV has the Repeat of the LS stroker turbo set-up on in 11min again on POWER NATION.

Kingsize

iTrader: (13)

Yea, I've seen their recommendation, hell I don't even mind re-sleeving any aluminum or iron tall deck block to keep the 4.195-4.200 bore my heads were ported, valved, and chambered for. I may be competing in a BB class soon since I have a large cube build anyway. Might as well try for 510-520 CI if it is feasible.

lil john

Call Todd Goodwin of Competition Engines for the RHS 510 set-up
I would love to see or dream of a 4.60 crank spinning up to 7500-8000 rpms.
1 other dream I had has started though .... I luv heads so... I talked 2 Chris Frank (he did my LS3's) and he gave me a quoted on the Cnc $1600.oo for a set of custom LSX CT raw port heads for my 408 (btw it's broken in KCS). I don't want a larger engine but I REALLY do luv heads and different combinations...
So many other things going on but we will get there on my budget.

MrEracer

iTrader: (3)

Are you saying that he bored the RHS sleeves to 4.185 and had a problem and he had to re-sleeve the block because of going over the RHS recommended max bore size?
Shirl

lil john

No a friend wanted a 454 RHS and did not want 2 use a crazy crank combo. 4.185 bore and a 4.125 crank adds up to 454ci.
4.165 bore 4.125 stroke is not a 454 it's has a few cubic inches missing...
The resleeve RHS is done 2 get 510ci.... 4.200 bore 4.600 stroke
Are you with me now.
4.165 bore and a 4.600 crank = 502 ci RHS
Dummy version 2