454 LS2 build
04-05-2010, 12:13 AM
#22
Nice build! The pics are absolutely gorgeous!!
What stroke are you running? What is your redline? Did you consider maybe using a LS7 style head? Rectangular port heads, with those cubes, would of probably made more BUT that still doesn't take away from that engine build... badass!
What stroke are you running? What is your redline? Did you consider maybe using a LS7 style head? Rectangular port heads, with those cubes, would of probably made more BUT that still doesn't take away from that engine build... badass!
Redline in car is 6,800.. I usually only go to 6600 though
I have a set of Mast LS3/LS7 12-degree heads but I'm saving them for my RHS 460 build.. I agree that they would make a bit more power.
04-05-2010, 02:56 AM
#25
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07-27-2021, 11:20 PM
#26
[QUOTE=Steve1969LS1;13118727]Today was dyno day.. my guess (what I hoped for) was 650/620.. turned out to be a decent guess.
While the cam we're running is large compared to other LS cams it's not that big considering the displacement of the engine. COMP said I could pick up a bunch of tq/hp by moving to a more aggressive 112 LSA, but drivability and idle would suffer.
Since I don't want too much power and I want to keep my street friendly drivability we settled on a 114 LSA.
Fired right up.. idle was good and after some break in time Westech made some pulls and adjusted the A/F..
Best pull was 650 hp and 613 tq.. but the best part is that even down at 3500 rpm it's already making 550 lb/ft. The torque peeks at around 4600 and is still well over 500 up at 6500. That's the kind of torque curve I was looking for - flat and a bit weighted to the bottom/midrange area.
Friday we start installing.. this engine should serve me well while I CAREFULLY build my RHS blocked / Mast Motorsport headed 460 engine.
Ready to rumble:
Corrected graph: (correction factor was 1.042ish)
hey I’m starting my LS2 454 build and I’m certainly after similar Hp/tq numbers. As I’m making my parts list I was wondering what stroke did u have on your crankshaft,and what other than a 114 Lsa should I be looking at for the cam shaft? Also, did you use the darton MID wet sleeves , or the dry sleeves? I’m kinda on the fence because for now it’s going to be a N/A nitrous motor. But eventually I may want to throw boost at it, and I’ve been studying Steve Morris and doing some research and he shows where the virginity of the block could be compromised with the mid wet sleeves as there is not any support behind the sleeves and that it could ultimately just take a hammer and break it off. And also how of the mid sleeves move .100ths of an inch could cause head gasket issues and cause water to go everywhere I don’t want to make an expensive decision without getting some insight first
While the cam we're running is large compared to other LS cams it's not that big considering the displacement of the engine. COMP said I could pick up a bunch of tq/hp by moving to a more aggressive 112 LSA, but drivability and idle would suffer.
Since I don't want too much power and I want to keep my street friendly drivability we settled on a 114 LSA.
Fired right up.. idle was good and after some break in time Westech made some pulls and adjusted the A/F..
Best pull was 650 hp and 613 tq.. but the best part is that even down at 3500 rpm it's already making 550 lb/ft. The torque peeks at around 4600 and is still well over 500 up at 6500. That's the kind of torque curve I was looking for - flat and a bit weighted to the bottom/midrange area.
Friday we start installing.. this engine should serve me well while I CAREFULLY build my RHS blocked / Mast Motorsport headed 460 engine.
Ready to rumble:
Corrected graph: (correction factor was 1.042ish)
hey I’m starting my LS2 454 build and I’m certainly after similar Hp/tq numbers. As I’m making my parts list I was wondering what stroke did u have on your crankshaft,and what other than a 114 Lsa should I be looking at for the cam shaft? Also, did you use the darton MID wet sleeves , or the dry sleeves? I’m kinda on the fence because for now it’s going to be a N/A nitrous motor. But eventually I may want to throw boost at it, and I’ve been studying Steve Morris and doing some research and he shows where the virginity of the block could be compromised with the mid wet sleeves as there is not any support behind the sleeves and that it could ultimately just take a hammer and break it off. And also how of the mid sleeves move .100ths of an inch could cause head gasket issues and cause water to go everywhere I don’t want to make an expensive decision without getting some insight first
07-28-2021, 12:39 AM
#27
TECH Senior Member
You're replying to an 11 year old thread, and the OP hasn't been here for 3 of them. You might need to check post dates....
07-28-2021, 07:22 AM
#28
ModSquad
iTrader: (6)
[QUOTE=LSMykie;20369354] Do your homework with the sleeve debate. I wouldn’t run wet sleeved in a GM block personally. They do move around. ProLine engines won’t let a GM wet sleeved block through the door. I went dry sleeve and most here do as well. Do some research.
Today was dyno day.. my guess (what I hoped for) was 650/620.. turned out to be a decent guess.
While the cam we're running is large compared to other LS cams it's not that big considering the displacement of the engine. COMP said I could pick up a bunch of tq/hp by moving to a more aggressive 112 LSA, but drivability and idle would suffer.
Since I don't want too much power and I want to keep my street friendly drivability we settled on a 114 LSA.
Fired right up.. idle was good and after some break in time Westech made some pulls and adjusted the A/F..
Best pull was 650 hp and 613 tq.. but the best part is that even down at 3500 rpm it's already making 550 lb/ft. The torque peeks at around 4600 and is still well over 500 up at 6500. That's the kind of torque curve I was looking for - flat and a bit weighted to the bottom/midrange area.
Friday we start installing.. this engine should serve me well while I CAREFULLY build my RHS blocked / Mast Motorsport headed 460 engine.
Ready to rumble:
Corrected graph: (correction factor was 1.042ish)
hey I’m starting my LS2 454 build and I’m certainly after similar Hp/tq numbers. As I’m making my parts list I was wondering what stroke did u have on your crankshaft,and what other than a 114 Lsa should I be looking at for the cam shaft? Also, did you use the darton MID wet sleeves , or the dry sleeves? I’m kinda on the fence because for now it’s going to be a N/A nitrous motor. But eventually I may want to throw boost at it, and I’ve been studying Steve Morris and doing some research and he shows where the virginity of the block could be compromised with the mid wet sleeves as there is not any support behind the sleeves and that it could ultimately just take a hammer and break it off. And also how of the mid sleeves move .100ths of an inch could cause head gasket issues and cause water to go everywhere I don’t want to make an expensive decision without getting some insight first
While the cam we're running is large compared to other LS cams it's not that big considering the displacement of the engine. COMP said I could pick up a bunch of tq/hp by moving to a more aggressive 112 LSA, but drivability and idle would suffer.
Since I don't want too much power and I want to keep my street friendly drivability we settled on a 114 LSA.
Fired right up.. idle was good and after some break in time Westech made some pulls and adjusted the A/F..
Best pull was 650 hp and 613 tq.. but the best part is that even down at 3500 rpm it's already making 550 lb/ft. The torque peeks at around 4600 and is still well over 500 up at 6500. That's the kind of torque curve I was looking for - flat and a bit weighted to the bottom/midrange area.
Friday we start installing.. this engine should serve me well while I CAREFULLY build my RHS blocked / Mast Motorsport headed 460 engine.
Ready to rumble:
Corrected graph: (correction factor was 1.042ish)
hey I’m starting my LS2 454 build and I’m certainly after similar Hp/tq numbers. As I’m making my parts list I was wondering what stroke did u have on your crankshaft,and what other than a 114 Lsa should I be looking at for the cam shaft? Also, did you use the darton MID wet sleeves , or the dry sleeves? I’m kinda on the fence because for now it’s going to be a N/A nitrous motor. But eventually I may want to throw boost at it, and I’ve been studying Steve Morris and doing some research and he shows where the virginity of the block could be compromised with the mid wet sleeves as there is not any support behind the sleeves and that it could ultimately just take a hammer and break it off. And also how of the mid sleeves move .100ths of an inch could cause head gasket issues and cause water to go everywhere I don’t want to make an expensive decision without getting some insight first
07-28-2021, 01:59 PM
#29
TECH Enthusiast
Run dry sleeves with less bore with what you are doing you wont notice the 15 less cubic inches. I run an old ERL Superdeck one with their wet sleeves but that is a totally different process and they are not around anymore. I have had it over 10 years now I am an NA 454 no nitrous or blower. If I had to do today I would run dry sleeves for what I am doing. With the Nitrous and Blower you need to keep the bore size down for head gasket stuff (4.125 bore). As I said before - I wish in the GM lunch room in 1990s they said - hey let's move this new LS motor thing to a 4.50 or 4.60 bore spacing (up from 4.4 inches) and this goofy 9.24 inch deck height let's just round it out to an even 9.5 inches.
The following 2 users liked this post by Double06:
NAVYBLUE210 (07-28-2021), rkupon1 (07-28-2021)
07-29-2021, 06:30 AM
#30
Run dry sleeves with less bore with what you are doing you wont notice the 15 less cubic inches. I run an old ERL Superdeck one with their wet sleeves but that is a totally different process and they are not around anymore. I have had it over 10 years now I am an NA 454 no nitrous or blower. If I had to do today I would run dry sleeves for what I am doing. With the Nitrous and Blower you need to keep the bore size down for head gasket stuff (4.125 bore). As I said before - I wish in the GM lunch room in 1990s they said - hey let's move this new LS motor thing to a 4.50 or 4.60 bore spacing (up from 4.4 inches) and this goofy 9.24 inch deck height let's just round it out to an even 9.5 inches.
07-31-2021, 08:24 AM
#31
Old Copper Penny.... That was a good read in Super Chevy yrs ago.
