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blown 305 help

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Old Jan 27, 2011 | 10:03 PM
  #1  
ThomasJ's Avatar
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From: pflugerville tx
Car: 1986 pontiac trans am
Engine: 305 tpi
Transmission: auto
blown 305 help

ill keep you posted on everything but last night i was driving home and my oil pressure went to o and the motor went kaboom, just died right in front of my house too, tried to crank not a thing would turn, so on CL i found a guy with the same 305 out of a 85 camaro and its only 250 and has 90.000 miles on it, the car has 77k, but anyway, i will be doing a motor swap and may need some help here and there, and from the information i just got tonight i got one of my friends looing at the motor telling me that the TPI intake on the 1985 carb setup, he says it could physically bolt on but the cam setup may not make it run, anyone have any idea if it would work or if im better off selling the motor and trying again
THANKS
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Old Jan 27, 2011 | 10:06 PM
  #2  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: blown 305 help

It'll be fine, but if you wanted to change it then the time to do it is while the engine is out.
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Old Jan 27, 2011 | 10:10 PM
  #3  
ThomasJ's Avatar
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From: pflugerville tx
Car: 1986 pontiac trans am
Engine: 305 tpi
Transmission: auto
Re: blown 305 help

ok yeah i REALLLYYY want to cam the shiz out of it, but im just worried the cam setup with the TPI wont run at all, but we will see
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Old Jan 27, 2011 | 10:16 PM
  #4  
ThomasJ's Avatar
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From: pflugerville tx
Car: 1986 pontiac trans am
Engine: 305 tpi
Transmission: auto
Re: blown 305 help

another thing is i dont know if the angle of the intake on the motor would math up to the TPI, its a 85 z28 motor i dont know what the did to the motors from 85 to 86 but ide like to know before i yank the other motor out thanks
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Old Jan 27, 2011 | 10:26 PM
  #5  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: blown 305 help

You can't put a large cam in a stock EFI setup, but there wouldn't be much reason to anyway.

The center intake bolt angle changed, but it's nothing that can't be dealt with. You can either slot the manifold, or you can put your 86 heads on the 85 block.
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Old Jan 27, 2011 | 10:30 PM
  #6  
ThomasJ's Avatar
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From: pflugerville tx
Car: 1986 pontiac trans am
Engine: 305 tpi
Transmission: auto
Re: blown 305 help

but my problem is i don't know what exactly i wrong with the 86 block i know i lost oil pressure and burned something up in the block but would that cause my heads to burn up with whatever happened to everything else??

Last edited by ThomasJ; Jan 27, 2011 at 10:33 PM.
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Old Jan 27, 2011 | 10:34 PM
  #7  
Apeiron's Avatar
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Posts: 20,981
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: blown 305 help

No, there's no pressurized oil anywhere in the head.

You've examined your current engine and you're positive it's dead?
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Old Jan 27, 2011 | 10:41 PM
  #8  
ThomasJ's Avatar
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From: pflugerville tx
Car: 1986 pontiac trans am
Engine: 305 tpi
Transmission: auto
Re: blown 305 help

wont crank got a knock got a racing buddy that said i spun a rod bearing and i also ran it with the oil pressure at 0, so the motor didnt do so well plus the motor is going to be a race motor when im done with it, but i have to have something in the car to get me to schooland back for now
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Old Jan 27, 2011 | 10:42 PM
  #9  
ThomasJ's Avatar
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From: pflugerville tx
Car: 1986 pontiac trans am
Engine: 305 tpi
Transmission: auto
Re: blown 305 help

Originally Posted by Apeiron
No, there's no pressurized oil anywhere in the head.

You've examined your current engine and you're positive it's dead?
just wanted to make sure i like working on cars but the know how all of the things work is still off the wall for me

Last edited by ThomasJ; Jan 28, 2011 at 02:27 PM.
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