Supercharging a 170k mile 305?
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Joined: Jun 2001
Posts: 140
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From: Colts Neck, NJ, USA
Car: 1990 IROC-Z
Engine: 305 TPI
Transmission: 700-R4
Supercharging a 170k mile 305?
Although my odo was rolled (this wasnt known to me when I bought it), it has now accumulated about 170k miles on the odo if I am doing my numbers right. The engine smokes a bit on startup, but other than that its fine mechanically and sounds great. Would it be able to handle a supercharger in its present state? What sorts of things would be likely to go wrong if I did? Are there things I could look for myself to see if this would be a good idea? And for those who have done this, is the 700R4/2.73 posi combo able to handle the extra power? And lastly, what would be my probable outlay of money on this venture, and would it be worth it? Thanks.
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Joined: Feb 2002
Posts: 239
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From: Spokane WA
Car: 75 & 82 Z-28
Engine: 350
Transmission: Saginaw 4 speed
If you plan on driving it harder (you'd have to be stupid not too hehe) then yes it's going to put a bit more wear on you already worn short block. I really dont think it's worth it due to it being an abused 305. The tranny/rear will handle it fine because you will not be making that much power at all.
If you really want a bump in power i'd go with a small nitrous shot, maybe in the 100 range. Probably add just as much or more power then a stock pullied supercharger will do. Cost you about 500$ when it's all said and done. And I would venture to say that the 100 shot of nitrous will probably not hurt anymore then putting the supercharger on there.
If you really want a bump in power i'd go with a small nitrous shot, maybe in the 100 range. Probably add just as much or more power then a stock pullied supercharger will do. Cost you about 500$ when it's all said and done. And I would venture to say that the 100 shot of nitrous will probably not hurt anymore then putting the supercharger on there.
Supreme Member

Joined: May 2001
Posts: 2,009
Likes: 5
From: Pitman, NJ
Car: '89 IROC-Z
Engine: Canfield 195 headed 358ci
Transmission: TH350, Art Carr 9.5"
Axle/Gears: 3.92 Dana 44
I'd recommend building a bigger motor rather than throwing a supercharger on a old 305 ...The cost and results would be the same (or better)
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