SBC Vs LS1 burn outs
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From: shawnee, ks
Car: 87 Firebird
Engine: 5.3 76mm
Transmission: Rossler TH400, PTC converter
Axle/Gears: Strange 12bolt, 3.08s
SBC Vs LS1 burn outs
http://s12.photobucket.com/albums/a2...ractionfun.flv
Granted he put down 415rwhp and is on worn out 325/50/15 MTs, but i like mine the best
An actual street race? He can pull me by about 2 cars from 0-120.
Granted he put down 415rwhp and is on worn out 325/50/15 MTs, but i like mine the best
An actual street race? He can pull me by about 2 cars from 0-120.
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From: NYTHIRDGEN
Car: 1989 T/A
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From: CC, TX
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From: Ravenna, Ohio
Car: 87 Trans Am GTA
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: SBC Vs LS1 burn outs
It is still a small block. GM has 5 generations of small blocks now. The one we are most familiar with is the Gen I which ran from 1955 all the way to 2000 (for some models). The Gen II ran from 1992 to 2001 (in certain vans, only till '97 for the f-bod), the Gen III (LS1, LQ4, etc) went from 1997 till around 2004, the Gen IV went from 2005 till today and the Gen V is now making its appearance (new ZR1 motor, next version of the LS7). A "big" or "small" block is defined by bore spacing and not cubic inches or external dimensions. Every time GM significantly changes the architecture of a new V8 (oiling, valve angle, and bore spacing) it designates it as a new generation.
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From: Bertram (outside Austin), TX
Car: 87 GTA
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From: Worcester
Car: 1984 Firebird T/A
Engine: 406sbc
Transmission: TH400
Axle/Gears: Moser 9"
Re: SBC Vs LS1 burn outs
I have a 406 small block, bigger than a 396 BBC in cubes but not in bore spacing and stuff like mentioned before.
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From: shawnee, ks
Car: 87 Firebird
Engine: 5.3 76mm
Transmission: Rossler TH400, PTC converter
Axle/Gears: Strange 12bolt, 3.08s
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From: Cincinnati, OH
Car: '90 RS
Engine: 377 LSX
Transmission: Magnum T56
Re: SBC Vs LS1 burn outs
As mentioned there are 400 big blocks and 400 small blocks. You hear the old statement all the time; "A hot rodder knows the difference between a 400 small block and 400 big block". If anyone ever asks you this question the answer is bore spacing. Yes the physical size of small blocks versus big blocks is different but that is not what separates them. Small blocks (of each generation) share the same bore to bore distance (center to center). Likewise for big blocks.
Despite the major differences between the generations I believe all Gen I, II, III and IV small blocks share a 4.4" bore spacing, thus deeming them "small blocks".
Despite the major differences between the generations I believe all Gen I, II, III and IV small blocks share a 4.4" bore spacing, thus deeming them "small blocks".
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From: NYC / Jersey
Car: 1990 Trans Am GTA
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Re: SBC Vs LS1 burn outs
Originally Posted by 84RIceEater
i thought anything past 400 is bigblock?

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From: Aloha, Oregon
Car: '91 Camaro Z28, '85 Camaro Z28
Engine: LB9, LB9
Transmission: T5, 700r4
Axle/Gears: Eaton 3.73 Posi, 3.23 Posi
Re: SBC Vs LS1 burn outs
I was just about to mention the World Products Small block 454. You beat me to it. In fact just last weak I was reading a Car Craft article where they tested the World Products 454 small block against an equally built big block 454. Funny thing was that the small block produced higher peak horsepower and torque, and across a much broader power band.
That 4.4" bore spacing is what limited the LT5. Mercury Marine said they could build GM a more efficient engine if they changed the bore spacing but GM wouldn't allow it due to tradition.
That 4.4" bore spacing is what limited the LT5. Mercury Marine said they could build GM a more efficient engine if they changed the bore spacing but GM wouldn't allow it due to tradition.
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From: CC, TX
Car: 1999 Yamaha Banshee
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From: Harford County, MD
Car: camaro sportcoupe
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Re: SBC Vs LS1 burn outs
ah yes, the elusive lsX block, lol! that thing can handle 500+cubes depending on stroke/bore combos.
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From: Hou. TX
Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: SBC Vs LS1 burn outs
http://s12.photobucket.com/albums/a2...ractionfun.flv
Granted he put down 415rwhp and is on worn out 325/50/15 MTs, but i like mine the best
An actual street race? He can pull me by about 2 cars from 0-120.
Granted he put down 415rwhp and is on worn out 325/50/15 MTs, but i like mine the best
An actual street race? He can pull me by about 2 cars from 0-120.
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From: shawnee, ks
Car: 87 Firebird
Engine: 5.3 76mm
Transmission: Rossler TH400, PTC converter
Axle/Gears: Strange 12bolt, 3.08s
Re: SBC Vs LS1 burn outs
Weather got crappy before i could use the bottle with him. He lives like 2 streets down, and ill be installing the bottle on his car this winter. Hes got a built 347 LE2 heads/cam package, Fast 90/90 intake, and went 11.40 @ 118
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From: Hou. TX
Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: SBC Vs LS1 burn outs
Sweet, i have olmost the same motor as you but i think my heads might be a bit more.
When do you shift? My car falls on its face at 6000 rpm but everyone tells me it might be due to the HEI. I dont have MSD but as i have the same cam and cubes and even compression as you i am trying to compare it to mine.
When do you shift? My car falls on its face at 6000 rpm but everyone tells me it might be due to the HEI. I dont have MSD but as i have the same cam and cubes and even compression as you i am trying to compare it to mine.
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From: shawnee, ks
Car: 87 Firebird
Engine: 5.3 76mm
Transmission: Rossler TH400, PTC converter
Axle/Gears: Strange 12bolt, 3.08s
Re: SBC Vs LS1 burn outs
Sweet, i have olmost the same motor as you but i think my heads might be a bit more.
When do you shift? My car falls on its face at 6000 rpm but everyone tells me it might be due to the HEI. I dont have MSD but as i have the same cam and cubes and even compression as you i am trying to compare it to mine.
When do you shift? My car falls on its face at 6000 rpm but everyone tells me it might be due to the HEI. I dont have MSD but as i have the same cam and cubes and even compression as you i am trying to compare it to mine.
Currently im shifting at 6-6300 where i have the limiter set at 6500, the car picks up strong at 4500 and pulls great untill i shift. Air fuel is a bit lean currently in the high 13's range at WOT, but on bottle it held at 11.5, so the car will pick up pretty decently with a new carb.
What heads are you going to run? The protopline vortecs do decently
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From: Hou. TX
Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: SBC Vs LS1 burn outs
They are a 292 casting from 1970, they are a over the counter part from GM, they flow like old regular heads till ported, theese are ported WAY out. They were pulling 7000 rpm on a different car with a huge cam, but they were not running HEI.
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From: WI,USA
Car: 89 FORMULA 350, 91 Z28 Convertible
Engine: ls1, LB9
Transmission: t56, Auto
Axle/Gears: S60/ 3.73
Re: SBC Vs LS1 burn outs
well they screwed it up them selfs. it should be.....
SBC (I, II)
BBC (can't recall all the little names)
GMB (General Motors Block) since it is now a true corp. block and retains the basic shape and size for all cubes now but "LSX" or "LS_" usually is what we use
SO he is right
SBC (I, II)
BBC (can't recall all the little names)
GMB (General Motors Block) since it is now a true corp. block and retains the basic shape and size for all cubes now but "LSX" or "LS_" usually is what we use
SO he is right
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From: Hou. TX
Car: 86 TA, 91 B4C
Engine: 5.3, 4.8
Transmission: 4L80 4000, T56
Axle/Gears: 4.30 M12, 23.42 10 bolt
Re: SBC Vs LS1 burn outs
well they screwed it up them selfs. it should be.....
SBC (I, II)
BBC (can't recall all the little names)
GMB (General Motors Block) since it is now a true corp. block and retains the basic shape and size for all cubes now but "LSX" or "LS_" usually is what we use
SO he is right
SBC (I, II)
BBC (can't recall all the little names)
GMB (General Motors Block) since it is now a true corp. block and retains the basic shape and size for all cubes now but "LSX" or "LS_" usually is what we use
SO he is right
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From: Diamondhead, MS
Car: 89 20th Ann. TA
Engine: Turbo 3.8 V6
Transmission: 200 4R
Axle/Gears: 3.27
Re: SBC Vs LS1 burn outs
well they screwed it up them selfs. it should be.....
SBC (I, II)
BBC (can't recall all the little names)
GMB (General Motors Block) since it is now a true corp. block and retains the basic shape and size for all cubes now but "LSX" or "LS_" usually is what we use
SO he is right
SBC (I, II)
BBC (can't recall all the little names)
GMB (General Motors Block) since it is now a true corp. block and retains the basic shape and size for all cubes now but "LSX" or "LS_" usually is what we use
SO he is right
Its a small block chevy. Obviously GM thinks so also or they wouldn't call it Gen I, II, III, IV.
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From: NORTH EAST GA
Car: 84 z28
Engine: 355
Transmission: TH350
Axle/Gears: one wheel peel
Re: SBC Vs LS1 burn outs
you know why he pulls on u by 2 cars? cause his car hooks up alot better....just from video i can tell that
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From: shawnee, ks
Car: 87 Firebird
Engine: 5.3 76mm
Transmission: Rossler TH400, PTC converter
Axle/Gears: Strange 12bolt, 3.08s
Re: SBC Vs LS1 burn outs
not really, i can take him by about 1/2 car from a dig when i have the stickies on while he has to lift to make his bite back up, im stuck and gone, and he will come around me at around 70, and pull to about a car between us at about 120-125.Ran him again last weekend me on those same little street tires, 25 punch he would pull out his 2 cars while i was spinning, then hold until 110-115 then i would start bringing him back in. I jetted the carb as rich as i can go and im still a bit on the lean side, so ive got another one coming.
Now my car is down for a little while, im pulling the stock suspension off finally, and going QA1 adjustable shocks in the rear, and bolting on my lCAs and brackets and TA. Should help out with the street tires more, and the fact i cant squeeze it until mid to top of first on the stickies.
Hes planning on going all out on the suspension stuff this year as well. Wants to do about every chassy add on you can including a front K member. LOL so we'll see.
Me hooking up a bit better:
http://media.putfile.com/oct---mid-nov-
Hawaiianbirdowner - Next day went to the track laid down some 11.3 @118 MPH passes, and later spun a bearing that day
Skinnies car is a 10.80@128mph w/ 1.56 60's
Henry - Might never race him, but its cool, a stock 98 LS1 swapped 79 caprice areocoupe
C6 Z06 owner recently sold the vette, and his 8-9sec LS2 2000 camaro and bought a new viper, is going for 9's on a true street tire, damn rich guy
Re: SBC Vs LS1 burn outs
Following that standard though, there shouldnt be a sbc2 either. It was a corporate engine also.
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Iroc8t8
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May 4, 2026 08:09 PM




it's a SBC with a slightly different design. it's still a sbc motor. 




