Who has sleeved big CI NA setup?
#1
10 Second Club
Thread Starter
iTrader: (8)
Who has sleeved big CI NA setup?
Where did you source your block and sleeves?
Did you buy a short block?
460”
480”
what is max cid for a standard height block?
Has anyone here built something big? How much power did you get out of it?
Did you buy a short block?
460”
480”
what is max cid for a standard height block?
Has anyone here built something big? How much power did you get out of it?
Popular Reply
08-17-2023, 08:45 PM
LS1TECH Sponsor
iTrader: (1)
Contact Horsepower Research for a large inch build with stock deck height. Erik Koenig has been building these large inch engines for years. He knows how to build the 468" engines so they last. I've sleeved his blocks for close to twenty years.
__________________
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
#2
I think you will need a tall deck block for something that large.. You can make a 454 maxing out a set of darton MID sleeves at 4.2" bore and a 4.1 stroke. Not sure what Ryne Cunningham did with his old 480 block to make that.
#5
12 Second Club
Yeah, I think 468 CID is the max for a stock, sleeved block. That's a 4.185 bore with a 4.250 stroke. That's about the max bore and stroke most sleeves can handle reliably.
Richard Holdener did lots of dyno testing on a 468 block. Check out his Youtube channel if you want an idea of how much power it can make. I know he went over 700hp with one set-up.
Richard Holdener did lots of dyno testing on a 468 block. Check out his Youtube channel if you want an idea of how much power it can make. I know he went over 700hp with one set-up.
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C5_Pete (08-18-2023)
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#8
I have a sleeved LC9 and stayed near stock LS7 cubic inches. I haven't seen the larger CI stuff run much harder than a 427-430ci motor. Also leaves room for plenty of rebuilds. With the larger CI, you need better heads, bigger cam, bigger exhaust, etc... Especially if you're trying to go max effort.
I kind of got screwed with my block, so I won't recommend who I bought it from.
Thinking of selling your turbo stuff or building another car?
I kind of got screwed with my block, so I won't recommend who I bought it from.
Thinking of selling your turbo stuff or building another car?
The following 3 users liked this post by jayyyw:
#9
LS1TECH Sponsor
iTrader: (1)
Contact Horsepower Research for a large inch build with stock deck height. Erik Koenig has been building these large inch engines for years. He knows how to build the 468" engines so they last. I've sleeved his blocks for close to twenty years.
__________________
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
#10
10 Second Club
Thread Starter
iTrader: (8)
I have a sleeved LC9 and stayed near stock LS7 cubic inches. I haven't seen the larger CI stuff run much harder than a 427-430ci motor. Also leaves room for plenty of rebuilds. With the larger CI, you need better heads, bigger cam, bigger exhaust, etc... Especially if you're trying to go max effort.
I kind of got screwed with my block, so I won't recommend who I bought it from.
Thinking of selling your turbo stuff or building another car?
I kind of got screwed with my block, so I won't recommend who I bought it from.
Thinking of selling your turbo stuff or building another car?
I’m going to run my current turbo combo this fall and likely most of next year until I truly make a decision about my direction.
The brain says BBC is the easy cheap way to go… but my heart says stay with the LS platform.
#12
TECH Addict
Do you sell sleeved blocks outright or is a core needed to be sent to you?
#13
TECH Fanatic
iTrader: (10)
I bought a TSP 454 about 5 years ago, 4.185x4.125, some details in the sig. The challenge with the big cubes of course is moving enough air. I'm running a non ported MSD, 1-7/8 primaries and Fbody style Y exhaust. It peaked at only around 6200 with a fairly large 4.2 cam so probably leaving a lot on the table if I could move enough air to peak a few hundred rpm higher. A high ram would surely help but I'm not looking to hack up my cowl, likewise 2" primaries with a dumped X but don't want the noise. The local guy who tuned it wasn't all that good either, been working with Pat G to fix a few things with the street tune so possible he may find a few more peak ponies if it were to go back on a dyno. But for a street car it's fun as hell with that torque and does what I want so no complaints.
#14
10 Second Club
Thread Starter
iTrader: (8)
Thanks again for the feedback, fellas.
This is an all out track only racecar. BBC is cheaper and makes more power…. But a high winding LS setup is really what I’d like.
I have the heads. LS7 style. Working with BTR for the valvetrain. Brian and I have done a lot over the years with my various camshafts.
This is an all out track only racecar. BBC is cheaper and makes more power…. But a high winding LS setup is really what I’d like.
I have the heads. LS7 style. Working with BTR for the valvetrain. Brian and I have done a lot over the years with my various camshafts.
#15
I have a sleeved LC9 and stayed near stock LS7 cubic inches. I haven't seen the larger CI stuff run much harder than a 427-430ci motor. Also leaves room for plenty of rebuilds. With the larger CI, you need better heads, bigger cam, bigger exhaust, etc... Especially if you're trying to go max effort.
I kind of got screwed with my block, so I won't recommend who I bought it from.
Thinking of selling your turbo stuff or building another car?
I kind of got screwed with my block, so I won't recommend who I bought it from.
Thinking of selling your turbo stuff or building another car?
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#16
TECH Addict
iTrader: (1)
The early Darton sleeved LS1/LS6 could go to a 4.160" bore. The later Dartons could go to 4.200". Personally, I'd stop at 4.185", tops, especially with a small power adder. I like a little insurance in case an overbore is needed. As for stroke, 4.125" is probably tops w/o a tall deck, unless you want to run a high friction rod ratio. My opinion....
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C5_Pete (09-25-2023)
#17
12 Second Club
The early Darton sleeved LS1/LS6 could go to a 4.160" bore. The later Dartons could go to 4.200". Personally, I'd stop at 4.185", tops, especially with a small power adder. I like a little insurance in case an overbore is needed. As for stroke, 4.125" is probably tops w/o a tall deck, unless you want to run a high friction rod ratio. My opinion....
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C5_Pete (09-25-2023)
#18
I'm not sure if there is a difference in the sleeves they use on a 5.3 vs LS7, but Brian Tooley built an LS7 based 454 with a 4.250 stroke. It made right at 700 hp with a cathedral port set-up. I don't see why you couldn't use the same 4.250 crank with a re-sleeved 5.3L
#19
ModSquad
iTrader: (6)
With a 4.250 stroke, you’ll need the max length sleeve offered by Darton to make it work…ish. It just so happens that I have a fresh RED Darton sleeved block in the shop. Towers are tapped for pipe plugs, fully de-burred and super nice. Rough bored to 4.148 for a 4.155 final hone, but can go out to 4.200 if your ready to party…. in case you guys are looking for a sleeved block. No wait.
#20
9 Second Club
iTrader: (1)
I’ll be racing it this weekend.
Last edited by ptero; 09-22-2023 at 11:52 PM.
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