starter interchangeability
Thread Starter
Instructor
Joined: Jan 2008
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From: Yonkers New York
starter interchangeability
Is there any difference in a starter for an iron block LS1 (camaro, firebird, gto, etc) and a C5 aluminum block? Specifically, the throw, or how far out the drive goes.
Race Director
Joined: Oct 2002
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From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
There is no such thing as an "iron block LS1".
F bod and GTO use the same aluminum block LS1 as the C5. The only engine differences on those cars is some of the external accessories (water pump, balancer, throttle body, etc).
I'm not sure about the starter, but most likely they are the same part.
F bod and GTO use the same aluminum block LS1 as the C5. The only engine differences on those cars is some of the external accessories (water pump, balancer, throttle body, etc).
I'm not sure about the starter, but most likely they are the same part.
Thread Starter
Instructor
Joined: Jan 2008
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From: Yonkers New York
OK, maybe I'm looking for the wrong information. The flexplate in the C5 is not flat, but recessed. A flexplate from a iron block truck engine, even a 5.3, 5.7, whatever, is flat. If I used a flat flexplate would the Corvette starter work or would I need a starter with more (or less) throw. The vette engine will not be in a vette, but using a older truck bellhousing. As I understand it a non-LS bellhousing with a flat flexplate won't require the converter mounting lugs or crank snout to be modified.
Burning Brakes
Joined: Aug 2006
Posts: 1,217
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From: Stark County Ohio
There is no such thing as an "iron block LS1".
F bod and GTO use the same aluminum block LS1 as the C5. The only engine differences on those cars is some of the external accessories (water pump, balancer, throttle body, etc).
I'm not sure about the starter, but most likely they are the same part.
F bod and GTO use the same aluminum block LS1 as the C5. The only engine differences on those cars is some of the external accessories (water pump, balancer, throttle body, etc).
I'm not sure about the starter, but most likely they are the same part.
Sorry, I don't know about the starter.
Race Director
Joined: Oct 2002
Posts: 16,477
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From: Gone
CI 6-7-8-9-10 Veteran
St. Jude Donor '03
There are Gen III Iron block V8 engines, yes. They are as follows.
LR4 4.8
L33 5.3
L59 5.3
LQ4 6.0
LQ9 6.0
There were only two LS V8 engines made in the Gen III platform, and they are both aluminum blocks:
LS1
LS6
So, yes, my comment that there is no such thing as an iron block LS1 engine is correct.
LR4 4.8
L33 5.3
L59 5.3
LQ4 6.0
LQ9 6.0
There were only two LS V8 engines made in the Gen III platform, and they are both aluminum blocks:
LS1
LS6
So, yes, my comment that there is no such thing as an iron block LS1 engine is correct.
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Thread Starter
Instructor
Joined: Jan 2008
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From: Yonkers New York
Now I'm assuming a LQ9 is the same as a 5.3, so a flat flexplate and bellhousing from a 5.3, along with the corvette converter (without changing the mounting lugs) with a 5.3 or 6.0 starter will all work together.
Thread Starter
Instructor
Joined: Jan 2008
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From: Yonkers New York
Y2Kvert4me, I think I was wrong in asking if those other engines were LS based. I guess I should have called the iron engines vortecks. Regardless, it looks like I got my answer. I will be looking for all components from the 5.3 then cross my fingers.
Burning Brakes
Joined: Aug 2006
Posts: 1,217
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From: Stark County Ohio
This is what I was going by -- from The GM Parts Catalog: (Note the LSx reference below)
Chevy LS Series Quick Reference Chart
Origin Part Material Deck Bore Main Cap Crankshaft Oiling Rear Main Max Max Hp Usage Page
Number Height Bolt Material Jnl Dia. Seal Stroke Number
LS1/LS6 12561166 Alum 9.240 3.89" 6 Iron Std. LS (2.56) Wet 1 pc 4.00" 450 Street 267
LS2 12568950 Alum 9.240 4.00" 6 Iron Std. LS (2.56) Wet 1 pc 4.00" 450 Street 268
L92/LS3 12584727 Alum 9.240 4.065" 6 Iron Std. LS (2.56) Wet 1 pc 4.00" 525 Street 269
LS7 17802854 Alum 9.240 4.125" 6 PM Std. LS (2.56) Dry 1 pc 4.10" 550 Street 270
LS7 25534427 Alum 9.240 4.125" 6 PM Std. LS (2.56) Dry 1 pc 4.10" 550 Street 270
C5R 12480030 Alum 9.240 4.117–4.160" 6 8620 Steel Std. LS (2.56) Wet 1 pc 4.10" 900 Pro 271
LQ9 12572808 Iron 9.240 3.98" 6 Iron Std. LS (2.56) Wet 1 pc 4.00" 500 Street 268
LSX 19166454 Iron 9.260 3.99–4.250" 6 1045 Steel Std. LS (2.56) Wet 1 pc 4.25" 1500+ Street/Pro 272
LSX 19166097 Iron 9.700 3.99–4.250" 6 1045 Steel Std. LS (2.56) Wet 1 pc 4.50" 1500+ Street/Pro 273
Otherwise I stand corrected.
Chevy LS Series Quick Reference Chart
Origin Part Material Deck Bore Main Cap Crankshaft Oiling Rear Main Max Max Hp Usage Page
Number Height Bolt Material Jnl Dia. Seal Stroke Number
LS1/LS6 12561166 Alum 9.240 3.89" 6 Iron Std. LS (2.56) Wet 1 pc 4.00" 450 Street 267
LS2 12568950 Alum 9.240 4.00" 6 Iron Std. LS (2.56) Wet 1 pc 4.00" 450 Street 268
L92/LS3 12584727 Alum 9.240 4.065" 6 Iron Std. LS (2.56) Wet 1 pc 4.00" 525 Street 269
LS7 17802854 Alum 9.240 4.125" 6 PM Std. LS (2.56) Dry 1 pc 4.10" 550 Street 270
LS7 25534427 Alum 9.240 4.125" 6 PM Std. LS (2.56) Dry 1 pc 4.10" 550 Street 270
C5R 12480030 Alum 9.240 4.117–4.160" 6 8620 Steel Std. LS (2.56) Wet 1 pc 4.10" 900 Pro 271
LQ9 12572808 Iron 9.240 3.98" 6 Iron Std. LS (2.56) Wet 1 pc 4.00" 500 Street 268
LSX 19166454 Iron 9.260 3.99–4.250" 6 1045 Steel Std. LS (2.56) Wet 1 pc 4.25" 1500+ Street/Pro 272
LSX 19166097 Iron 9.700 3.99–4.250" 6 1045 Steel Std. LS (2.56) Wet 1 pc 4.50" 1500+ Street/Pro 273
Otherwise I stand corrected.
