305 LB9 300 HP build
Joined: Jul 2003
Posts: 10,532
Likes: 204
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: 305 LB9 300 HP build
Originally Posted by Sojer
I was going t gasket match it but its a 305 its only going to suck up so much air and I'm sure the heads and intake flow more than the hp I'm getting. I feel it would be a waste of time its just a cheap 305 build...
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Joined: Jun 2011
Posts: 939
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From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
I thought about that to race season is here and ppl pulling the stangs out I just want my car back. To day I only have bout 30mins on it but I found out that the fuel lines was backwards. It fired like 1 cyl but the timing was not set so its on and popping Monday I will try and get it on vid
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Senior Member
Joined: Jun 2011
Posts: 939
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From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
After 2days of firing still no start. Took the dizzy out and got it to point to cyl #1 so I hope it fires 2morrow. I will try to catch it on vid.
Joined: Jul 2003
Posts: 10,532
Likes: 204
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: 305 LB9 300 HP build
Originally Posted by Sojer
After 2days of firing still no start. Took the dizzy out and got it to point to cyl #1 so I hope it fires 2morrow. I will try to catch it on vid...
Thread Starter
Senior Member
Joined: Jun 2011
Posts: 939
Likes: 0
From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
i lost fire help!!! i made a vid but it didnt fire up if u want to see it i will post it
Joined: Jul 2003
Posts: 10,532
Likes: 204
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: 305 LB9 300 HP build
Originally Posted by Sojer
i lost fire help!!!

Originally Posted by Sojer
i made a vid but it didnt fire up if u want to see it i will post it
Joined: Mar 2000
Posts: 43,187
Likes: 43
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
But, if you're saying you don't have any spark, that's a different issue.
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Senior Member
Joined: Jun 2011
Posts: 939
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From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
Yeah tdc comp # I just ran into other probs I will post the vid
Thread Starter
Senior Member
Joined: Jun 2011
Posts: 939
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From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
Still tryingto upload the vid I did not loose spark its just really weak what could be its a rebuilt dizzy all new parts
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Joined: Jun 2011
Posts: 939
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From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
<a href=http://s134.photobucket.com/albums/q84/sojer/?action=view¤t=video-2012-03-28-11-52-09.mp4 target=_blank><img src=http://static.photobucket.com/player.swf?file=http://vid134.photobucket.com/albums/q84/sojer/video-2012-03-28-11-52-09.mp4 border=0 alt=></a>
Thread Starter
Senior Member
Joined: Jun 2011
Posts: 939
Likes: 0
From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Thread Starter
Senior Member
Joined: Jun 2011
Posts: 939
Likes: 0
From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Thread Starter
Senior Member
Joined: Jun 2011
Posts: 939
Likes: 0
From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
I don't see how this helps but if it does. It sounds like a car that has no spark or fuel
Joined: Jul 2003
Posts: 10,532
Likes: 204
From: NYC / Jersey
Car: 1990 Trans Am GTA
Engine: Turbo 305 w/MS2
Transmission: 700R4
Re: 305 LB9 300 HP build
Originally Posted by Sojer
I don't see how this helps but if it does. It sounds like a car that has no spark or fuel...
Edit: Regarding that clicking noise in the beginning, check your IAC valve...
Last edited by Street Lethal; Apr 7, 2012 at 08:25 AM. Reason: added information...
Junior Member
Joined: Dec 2010
Posts: 81
Likes: 0
Car: 1985 Camaro Z28
Engine: 1988 305 TPI
Transmission: 1993 T-56
Axle/Gears: 3.08
Re: 305 LB9 300 HP build
about the weak spark post, I had a bad coil drive me crazy last summer, it was a six month old msd. I would put a spark plug in the wire directly from the coil and it would spark bright blue, when I would check from the regular plug wire I would get nothing. I thought it was the cap at first. I had to call msd for the specs and it checked bad, you can test you coil by checking the primary and secondary resistance, dont remember them off hand but i'm sure you could find them if you searched around here.
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Joined: Jun 2011
Posts: 939
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From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
Ok man MSD stuff goes bad a lot but most I here bad is from LT1 motors I will just get all new stuff again its all new its warranty so I will try Monday. Have a few other bugs I have to get done. 1 is my plastic vss to my trans I can find it or I get wrong 1s so junk yard diving monday
Thread Starter
Senior Member
Joined: Jun 2011
Posts: 939
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From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
Will not start spark still weak I replaced everything it back fired when it was a tooth off
Junior Member
Joined: Dec 2010
Posts: 81
Likes: 0
Car: 1985 Camaro Z28
Engine: 1988 305 TPI
Transmission: 1993 T-56
Axle/Gears: 3.08
Re: 305 LB9 300 HP build
I set my initial timing like this. Get the Engine at # one TDC (timing mark at the zero degree mark of the compression stroke) with the distributor cap on, I locate the number one terminal on the distributor cap, then I mark the base of the distributor with a marker directly below the terminal. Then I install the distributor so the rotor is pointing at the driver side headlight. Then I rotate the base so the rotor lines up with the mark that corresponds to number one terminal. This should set the initial timing well enough to get the engine started.
Thread Starter
Senior Member
Joined: Jun 2011
Posts: 939
Likes: 0
From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
I set my initial timing like this. Get the Engine at # one TDC (timing mark at the zero degree mark of the compression stroke) with the distributor cap on, I locate the number one terminal on the distributor cap, then I mark the base of the distributor with a marker directly below the terminal. Then I install the distributor so the rotor is pointing at the driver side headlight. Then I rotate the base so the rotor lines up with the mark that corresponds to number one terminal. This should set the initial timing well enough to get the engine started.
Thread Starter
Senior Member
Joined: Jun 2011
Posts: 939
Likes: 0
From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
I must have the dizzy in wrong I have to advance it like 20* (counter clock wize) to get it to ignite the fuel here's the vid with other questions
http://static.photobucket.com/player...8-15-30-37.mp4
http://static.photobucket.com/player...8-15-30-37.mp4
Thread Starter
Senior Member
Joined: Jun 2011
Posts: 939
Likes: 0
From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Thread Starter
Senior Member
Joined: Jun 2011
Posts: 939
Likes: 0
From: Detroit, MI
Car: 1987 IROC-Z red t-top
Engine: Nothing much
Transmission: I wish t56
Axle/Gears: 9bolt 3.27 4sale
Re: 305 LB9 300 HP build
I'm done got it running but it seems to have a intake leak. I can't find it. When I put the 1205 gaskets with the cork valley gasket, it sits too high meaning it not touching eather head. So I tried two it fit jus right but still run like **** so I went to 1 1205 and use rtv no luck. I even used felpro 9617 gasket no luck I think the block might have been redecked. So I will by by boss 92 integra 5spd burning a lil oil for 200 and pull the motor and redo a vortec 350 with my 113 heads and hsr get a used 350 tpi ecu get it reprogramed and try that. or can a maf do it this it was unpluged and running the same I have a new IAC
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