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Lt1 Experts inside for some help....

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Old 01-07-2008, 10:35 PM
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Car: 87 IROC Z28
Engine: Custom Forged 355
Transmission: 700R4
Axle/Gears: 9" 4:11's Detroit Locker
Lt1 Experts inside for some help....

ok....i have a 355 in my car...old school block style from motown...built motor for a blower....my frends friend is sellng a procharger of a lt1....perfect price and timing, just need to know if the bolt holes are in the same spot on a lt1 gen motor and a older styles 350....so i know if the brakets that hold the blower on the head and motor are the same and i can use this kit....anyone with any clue....let me know.....
Old 01-07-2008, 10:57 PM
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Car: 1987 GTA
Engine: LT1
Transmission: T56
Axle/Gears: 9 bolt 3.70 posi
Re: Lt1 Experts inside for some help....

The blower should work, but you may have to get the mounting brackets for the older engine. I believe the LT1 has the mounting holes a little off (for the extra brackets) than a standard SBC.
Old 01-08-2008, 02:31 PM
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Re: Lt1 Experts inside for some help....

The supercharger itself will work (I know a guy who has one on an '85 Trans Am TPI) but the brackets are different. If you just get the brackets for a 3rdgen F-body you should be fine.
Old 01-08-2008, 03:23 PM
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Re: Lt1 Experts inside for some help....

Even if it would bolt to your engine, from the research i've done for wanting to put a blower on an LT1 thirdgen, im quite sure, that it wouldnt fit due to the location of the steering box, i've never actually tried to bolt one on personally, but i've researched it a decent bit and im quite confident there just isnt enough room to get it installed.
Old 01-08-2008, 04:54 PM
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Re: Lt1 Experts inside for some help....

He doesn't have an LT1 in his car - the supercharger kit he's considering getting for his car is meant for an LT1 f-body.
Old 01-08-2008, 05:05 PM
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Re: Lt1 Experts inside for some help....

Thats why I said "even if it would bolt to your engine"

Im saying that either way, reguardless of the block, im very sure the mounting location using the LT1 kits bracketry will not allow fitment into a thirdgen with the steering box.

Originally Posted by Air_Adam
He doesn't have an LT1 in his car - the supercharger kit he's considering getting for his car is meant for an LT1 f-body.
Old 01-08-2008, 05:38 PM
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Car: '86 IROC-Z/'94 Z28
Engine: 350 LT1/382 LT1
Transmission: 4L60-E/T-56
Axle/Gears: 3.45/3.42 (soon 4.10)
Re: Lt1 Experts inside for some help....

What kind of accessories are you running? Im kind of confused what you combo is, and what type of intake you have. If Im not mistaken the blower mounts rather high so I wouldnt think fitment would be a problem, I would think it's more like accessory drive and intake type.

If it's an LT1 blower in a thirdgen with a gen 1, then you need to use a bracket for the type accessories on the car. Im assuming it's a TPI intake...so a TPI blower would be best.

Last edited by dhirocz; 01-08-2008 at 05:44 PM.
Old 01-08-2008, 05:47 PM
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Engine: Custom Forged 355
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Re: Lt1 Experts inside for some help....

ok, its a carbed 355 motor with forged internal and aluminum victor jr heads and intake and a 750 double pumper, i can do the plumbing from the blower to the carb easily, i just need to know if the lt1 blower braket will work with a 350 setup like mine...and i dont have anything but a power steering pump and a altenator and a water pumo lol....so yes or no...or i have to buy teh 350 braket from procharger...and its a d1sc
Old 01-08-2008, 05:51 PM
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Axle/Gears: 3.45/3.42 (soon 4.10)
Re: Lt1 Experts inside for some help....

No. LT1's have different accessories, different drive coming off the crank. U need a TPI bracket, I assume you have the pre-88 style?

I bet you could make a blower kit for a 1987 305 TBI car work REALLY well. Just swap the head unit.
Old 01-09-2008, 05:56 PM
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Re: Lt1 Experts inside for some help....

well i want to use everything i can from his lt1 kit that i can, like craqnk pulley if i can use that be nice and everything else i can make or use, i just have to buy the tpi braket to hold the actual compressor.????
Old 01-09-2008, 07:05 PM
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Car: 1987 GTA
Engine: LT1
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Re: Lt1 Experts inside for some help....

Crank pully will be different since the LT1 uses a different type of crank hub/pully unit, you'll need to use a pully for a gen 1 SBC.
Old 01-10-2008, 05:28 PM
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Engine: Custom Forged 355
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Re: Lt1 Experts inside for some help....

so im gettin so far i need the crank pulley and the compressor braket for a old skool sbc kit from procharger...wnything else....that anyone can think of thats differ that might bite me in the ***...
Old 01-10-2008, 06:17 PM
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Car: 1987 GTA
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Re: Lt1 Experts inside for some help....

Don't forget the piping and the box for the carb.
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