1991 Z28, LSA/2.3 ZR1 blower under stock hood build.
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From: Long Beach Cali
Car: 68,87,99 maros, 07 tbss
Engine: TPI,LS2,LSA,L92
Transmission: T56,T56,T56, 4L80E
Axle/Gears: 12bolts and 14 bolt lol
1991 Z28, LSA/2.3 ZR1 blower under stock hood build.
Doing a slightly different build. Forged LSA shortblock, with ZR1 supercharger, LPE snout to run LSA accessories, 4L80E (unknown converter), moser 12 bolt.
These are some mock up picks to verify that the stock hood would clear the blower. Now I can proceed with the build.



These are some mock up picks to verify that the stock hood would clear the blower. Now I can proceed with the build.
Joined: Sep 1999
Posts: 4,353
Likes: 308
From: NJ
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: 1991 Z28, LSA/2.3 ZR1 blower under stock hood build.
I've wondered about this since the guy who owns/runs Speartech posted his car. He went through the trouble of moving the water/air heat exchanger to the rear on the blower housing too. are you using Spohn pedestals in the stock location?
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iTrader: (4)
Joined: Jun 2005
Posts: 238
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From: Long Beach Cali
Car: 68,87,99 maros, 07 tbss
Engine: TPI,LS2,LSA,L92
Transmission: T56,T56,T56, 4L80E
Axle/Gears: 12bolts and 14 bolt lol
Re: 1991 Z28, LSA/2.3 ZR1 blower under stock hood build.
Thanks
Yes stock out of the box. I've seen the speartech Camaro (amazing), I think the relocation of the coolant lines was more of a preference than actually needed. They have that cowl hood so I know it wasn't a clearance issue for them.
I might have to modify my coolant line on the driver side. Since the person I purchased the blower from had the coolant lines split. They both normally are on the passanger side. I have no idea the reason for the modification.
I might have to modify my coolant line on the driver side. Since the person I purchased the blower from had the coolant lines split. They both normally are on the passanger side. I have no idea the reason for the modification.
Re: 1991 Z28, LSA/2.3 ZR1 blower under stock hood build.
With the flat blower lid, check the engine angle vs the fenders. The spohn stands are notoriously low on the pass side
Splitting the coolant lines is likely a packaging decision. Much easier to run one each direction to the HX and pump than both together for some HX setups
Splitting the coolant lines is likely a packaging decision. Much easier to run one each direction to the HX and pump than both together for some HX setups
Joined: Sep 1999
Posts: 4,353
Likes: 308
From: NJ
Car: 92 Firebird
Engine: 4.8 LR4
Transmission: T56
Axle/Gears: 3.45 9 Bolt
Re: 1991 Z28, LSA/2.3 ZR1 blower under stock hood build.
You building the engine yourself? You keeping the stock displacement, 6.2L?
Thread Starter
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iTrader: (4)
Joined: Jun 2005
Posts: 238
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From: Long Beach Cali
Car: 68,87,99 maros, 07 tbss
Engine: TPI,LS2,LSA,L92
Transmission: T56,T56,T56, 4L80E
Axle/Gears: 12bolts and 14 bolt lol
Re: 1991 Z28, LSA/2.3 ZR1 blower under stock hood build.
With the flat blower lid, check the engine angle vs the fenders. The spohn stands are notoriously low on the pass side
Splitting the coolant lines is likely a packaging decision. Much easier to run one each direction to the HX and pump than both together for some HX setups
Splitting the coolant lines is likely a packaging decision. Much easier to run one each direction to the HX and pump than both together for some HX setups
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Thread Starter
Member
iTrader: (4)
Joined: Jun 2005
Posts: 238
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From: Long Beach Cali
Car: 68,87,99 maros, 07 tbss
Engine: TPI,LS2,LSA,L92
Transmission: T56,T56,T56, 4L80E
Axle/Gears: 12bolts and 14 bolt lol
Re: 1991 Z28, LSA/2.3 ZR1 blower under stock hood build.
Here's my blower. Look how the lines are split. I believe the reason for this is the hot and cool lines aren't side by side. Helping any bit with IATs.
As far as building myself yes and no. Engine was built by Charlie at rpm. Stock LSA crank, Callie's rods, weisco pistons, CNC LPE LSA heads. Comp 9.7:1
The rest of the build will probably be done in house (aside from headers).
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