SB2.2 2nd Gen?
07-04-2003, 10:25 AM
#1
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Join Date: May 2001
Location: Vermilion, Ohio USA
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SB2.2 2nd Gen?
I am Interested in the SB2.2 Conversion. Does anyone have a good web resource on SB2.2 parts on an LT-1? Is it even feasible. I'd like to know what's involved, I'm working on somthing for a marine application and I'm gonna build a Frankenstein LT-1. I was looking at SB2.2 heads and have been researching it for a while
07-04-2003, 10:39 AM
#2
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Join Date: Nov 2001
Location: In a house by the bay
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Whew man... that got my pulse a racing just thinking about it.
The swap is "feasible" and it's been done, just nobody's talking about how they did it. I've seen one built but I'm not sure how much I can talk about it as there may be a swap coming in the near future.
Either way, thinking it through and actually building the thing is two different processes. Aside from all the typical sb2.2 stuff... custom pistons, cam core, bolts that go through the floors of the ports and all that stuff... there's really nothing too out of the ordinary.
The major thing in my mind is the intake. If you go with what's out there (castings) then you are gonna need one hell of a hood to fit everything under. Either that or you have a custom fuelie intake built. The one I saw used an intake that looked very much like an LS1..... interlaced plenum runners with a "lower" plenum, using a LS-type throttle body.
I don't think the swap would be that difficult though. How much hp were you hoping to make? And at what rpm???
-Mindgame
The swap is "feasible" and it's been done, just nobody's talking about how they did it. I've seen one built but I'm not sure how much I can talk about it as there may be a swap coming in the near future.
Either way, thinking it through and actually building the thing is two different processes. Aside from all the typical sb2.2 stuff... custom pistons, cam core, bolts that go through the floors of the ports and all that stuff... there's really nothing too out of the ordinary.
The major thing in my mind is the intake. If you go with what's out there (castings) then you are gonna need one hell of a hood to fit everything under. Either that or you have a custom fuelie intake built. The one I saw used an intake that looked very much like an LS1..... interlaced plenum runners with a "lower" plenum, using a LS-type throttle body.
I don't think the swap would be that difficult though. How much hp were you hoping to make? And at what rpm???
-Mindgame
07-04-2003, 12:10 PM
#3
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Location: Vermilion, Ohio USA
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Well, It's for a boat, so the Sky is the limit, I was wanting to keep the LT4 style intake I picked up a fire damaged LT1 for 100 Bucks!!! So it's my frankenstein I think in a boat would be awesome then Every Vehicle I own will have a Small block Chevy
07-04-2003, 12:47 PM
#4
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Location: Upstate NY
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If you are running a boat for a distance (not a drag), isn't it like an endurance engine, or a long dyno pull? Perhaps the LT1 block isn't the best for high hp endurance.
The $100 is just a tiny drop in the bucket.
My $.02
The $100 is just a tiny drop in the bucket.
My $.02
07-04-2003, 01:42 PM
#6
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Nothing's impossible but making an LT4 intake work on an sb2.2 is probably pretty close.
http://community.webshots.com/photo/...79681502uSJAsk
That pic should give you an idea of what you're dealing with. The sb has spread intake ports much like a Ford... hell, the valve order is different, ie-ie-ei-ei.
You'd need the cast gm intake/tray or you'd need a custom to make it work. And I agree with Jon, why even keep the LT for this kind of build?
Find a street-rod for it.
edit: Wow, did everyone get scared or what.....
-Mindgame
http://community.webshots.com/photo/...79681502uSJAsk
That pic should give you an idea of what you're dealing with. The sb has spread intake ports much like a Ford... hell, the valve order is different, ie-ie-ei-ei.
You'd need the cast gm intake/tray or you'd need a custom to make it work. And I agree with Jon, why even keep the LT for this kind of build?
Find a street-rod for it.
edit: Wow, did everyone get scared or what.....
-Mindgame
Last edited by Mindgame; 07-05-2003 at 11:26 AM.
07-06-2003, 12:19 PM
#7
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Join Date: Dec 1969
Location: Pacific North West
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Well It did not scare me off I am looking at heads like yours or the SB2.2 heads. Will probably run Stock PCM first year(I have five of them 94-97) but am looking to step up to a fast after I get it broke in and mechanicals figured out.
Thanks for the pic of the intake side. GMPP does not show one.
My main goal is to run low 10s(as close to 9.99 as possible) and still drive the car 100miles home from the track. I am looking for bulk HP and TQ under the curve from 4,000-7,000 Not looking for a peaky setup but more of a huge flat curve.
I am looking at going this route or running a twin turbo. Either setup will be Dry sump.
What are your thoughts?
I am looking at heads like yours or the SB2.2 heads. Will probably run Stock PCM first year(I have five of them 94-97) but am looking to step up to a fast after I get it broke in and mechanicals figured out.Thanks for the pic of the intake side. GMPP does not show one.
My main goal is to run low 10s(as close to 9.99 as possible) and still drive the car 100miles home from the track. I am looking for bulk HP and TQ under the curve from 4,000-7,000 Not looking for a peaky setup but more of a huge flat curve.
I am looking at going this route or running a twin turbo. Either setup will be Dry sump.
What are your thoughts?
07-06-2003, 12:52 PM
#8
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Location: In a house by the bay
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Low 10's high 9's....
Right there with my setup but you can see I have some traction problems. For a streeter like you want to build (same for me) it's tougher because you need to work within reasonable rpm limits. If not, you could just go to an AFR 227 and run a solid with alot of duration. That'd get you there but an even better cylinder head and milder cam will do the same.
For a 7k shift point engine (most bang for the buck) I'd look at building a stroker engine around the AFR 215 RR head. It's got plenty of potential to make 650 hp in a 383/396 with a 240-ish at .050 cam. That's definitely get you to your goal without spending a ton of money for a cylinder head setup. I went the route I did because I already had the heads. If I had to start from scratch, the 215 would be a real likely candidate. I'd skip on the CNC ported head and buy them bare, having them worked specifically for the combination.
BTW, you don't just have to have a shaft setup for the AFR head. You could save quite a bit of dough using offset rockers and lifters. Isky has everything you need there.
Good luck.
-Mindgame
Right there with my setup but you can see I have some traction problems. For a streeter like you want to build (same for me) it's tougher because you need to work within reasonable rpm limits. If not, you could just go to an AFR 227 and run a solid with alot of duration. That'd get you there but an even better cylinder head and milder cam will do the same.
For a 7k shift point engine (most bang for the buck) I'd look at building a stroker engine around the AFR 215 RR head. It's got plenty of potential to make 650 hp in a 383/396 with a 240-ish at .050 cam. That's definitely get you to your goal without spending a ton of money for a cylinder head setup. I went the route I did because I already had the heads. If I had to start from scratch, the 215 would be a real likely candidate. I'd skip on the CNC ported head and buy them bare, having them worked specifically for the combination.
BTW, you don't just have to have a shaft setup for the AFR head. You could save quite a bit of dough using offset rockers and lifters. Isky has everything you need there.
Good luck.
-Mindgame
Last edited by Mindgame; 07-06-2003 at 01:25 PM.
07-06-2003, 11:55 PM
#9
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Join Date: Dec 1969
Location: Pacific North West
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LMFAO!! I JUST noticed your sig
I have thought about the 215s in the past but have yet to see a set really perform. I set of GTPs local managed 440RWHP. He has My ported LT1 heads by only 40RWHP. Motor was fully built by GTP.
I just REALLY want to stay N/A if I can. If not it will cost at least three times as much to run boost. Been there and was not happy there.
the other thing is N/A seems more consistant. I like that If I get what I want N/A the Juice will only be for pure humiliation 
Thanks for the input. I am hoping to get the Short block finished this winter and then heads will bee the next step
I will probably run a ported set of LT4s I have next year while saving for new heads.
BTW I would like to go Shaft rockers as I am getting tired of replacing my damn trunions every season
I have thought about the 215s in the past but have yet to see a set really perform. I set of GTPs local managed 440RWHP. He has My ported LT1 heads by only 40RWHP. Motor was fully built by GTP.
I just REALLY want to stay N/A if I can. If not it will cost at least three times as much to run boost. Been there and was not happy there.
the other thing is N/A seems more consistant. I like that
If I get what I want N/A the Juice will only be for pure humiliation Thanks for the input. I am hoping to get the Short block finished this winter and then heads will bee the next step
I will probably run a ported set of LT4s I have next year while saving for new heads.
BTW I would like to go Shaft rockers as I am getting tired of replacing my damn trunions every season
07-08-2003, 01:01 AM
#12
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Location: Pacific North West
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Well I would be willing to go to lunch some time and discuss it as I am in Kirkland
I am at 400rwhp now with a tiny set of LT1 heads and a GM Built factory short block. Feel free to visit Carb connection and check.
I have yet to see a set of the 215s really do what I want. I installed a custom 215RR 396Ci GTP motor that put out 440RWHP. I just expected more I guess.
I want 550 RWHP N/A through an auto or I will go turbos.
One thing is for sure....thiese Hooker LTs are going! I want to drop the car again!
as I am in Kirkland I am at 400rwhp now with a tiny set of LT1 heads and a GM Built factory short block. Feel free to visit Carb connection and check.
I have yet to see a set of the 215s really do what I want. I installed a custom 215RR 396Ci GTP motor that put out 440RWHP. I just expected more I guess.
I want 550 RWHP N/A through an auto or I will go turbos.
One thing is for sure....thiese Hooker LTs are going! I want to drop the car again!
07-08-2003, 02:05 AM
#13
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Location: Redmond, WA
Posts: 799
So if you could make 650+ horsepower N/A on pump gas, you'd consider that real performance?
Here's my 396 with the first set of 215RR LT1 heads from AFR...
http://home.gci.net/~jimlab/images/H...d/P1020025.jpg
http://home.gci.net/~jimlab/images/E...d/P1190035.jpg
http://home.gci.net/~jimlab/images/P...o/P1010114.jpg
http://home.gci.net/~jimlab/images/Dyno/P4260021.jpg
Port Flow Analyzer v3.0
Int: 28", Ext: 28", Coor to: 28" Vlv Dia: 2.1" 1.625"
Flow Numbers - 28 inches H2O
Valve Lift Intake Exhaust
.300 194.1 152.3
.400 257.5 188.2
.500 298.5 212.7
.600 316.7 226.9
.650 332.2 230.4
.700 333.0 232.5
.750 334.4 234.5
.800 336.6 237.2
Cam Motion solid roller, 257/266 @ 0.050", .683"/.672" on a 112 lsa.
It made 641 @ 6,600 on Mark's base maps before a big dip through the peak power zone (down to 586 @ 7,000) caused by the Opti. After the dip, it recovered to 637 @ 7,400, so you can bet there was more in between my "twin peaks". We tried another Opti, but had the same results. Highest recorded output for the day was 647 hp and 563 lb-ft.
Unfortunately, we never did get to final tune the engine with the new FAST eDist and LS1 coil packs, but it should be on its way up from B&B shortly, and is probably in the 660 horsepower range as-is. That's pump gas, BTW.
Here's my 396 with the first set of 215RR LT1 heads from AFR...
http://home.gci.net/~jimlab/images/H...d/P1020025.jpg
http://home.gci.net/~jimlab/images/E...d/P1190035.jpg
http://home.gci.net/~jimlab/images/P...o/P1010114.jpg
http://home.gci.net/~jimlab/images/Dyno/P4260021.jpg
Port Flow Analyzer v3.0
Int: 28", Ext: 28", Coor to: 28" Vlv Dia: 2.1" 1.625"
Flow Numbers - 28 inches H2O
Valve Lift Intake Exhaust
.300 194.1 152.3
.400 257.5 188.2
.500 298.5 212.7
.600 316.7 226.9
.650 332.2 230.4
.700 333.0 232.5
.750 334.4 234.5
.800 336.6 237.2
Cam Motion solid roller, 257/266 @ 0.050", .683"/.672" on a 112 lsa.
It made 641 @ 6,600 on Mark's base maps before a big dip through the peak power zone (down to 586 @ 7,000) caused by the Opti. After the dip, it recovered to 637 @ 7,400, so you can bet there was more in between my "twin peaks". We tried another Opti, but had the same results. Highest recorded output for the day was 647 hp and 563 lb-ft.
Unfortunately, we never did get to final tune the engine with the new FAST eDist and LS1 coil packs, but it should be on its way up from B&B shortly, and is probably in the 660 horsepower range as-is. That's pump gas, BTW.
07-10-2003, 12:48 AM
#15
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Join Date: Dec 1969
Location: Pacific North West
Posts: 1,431
Very nice! AND I must say about the only good one so far Problem is the is only 520 at the rear wheels right? That would be good, right where I want to be. Should pick up some with the Dry sump also
SO no lunch? I would like to check it out. I am only five minutes away
BTW Who did the work?
Problem is the is only 520 at the rear wheels right? That would be good, right where I want to be. Should pick up some with the Dry sump alsoSO no lunch? I would like to check it out. I am only five minutes away
BTW Who did the work?