LT1-LT4 Modifications 1993-97 Gen II Small Block V8

I'm back! - AI Cam time! - Rod bolts?

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Old 10-07-2010, 06:05 PM
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You cant run to far away from a 4th gen. they always manage to pull you back...

Your cam choice is nice, and so is your idea with the heads. Shifting at 6200 should be fine. Aslong as your bottom end is in good shape, and your not hitting redline in every gear every day lol
Old 10-07-2010, 06:47 PM
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Originally Posted by Slow94Formula
I'll be down there this Saturday too, and I'll be looking for your car. With any luck I'll be able to get some video. Haha Is it going to be there for the test and tune or the Midnight Mania?
Lol not sure. My buddy is taking it while I'm at a bus party up in Ames at Iowa State. I think they'll be going around 8 maybe?
Old 10-07-2010, 07:01 PM
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Originally Posted by Puck
On LT1s?? The rod bolts are the most stressed fastener in any 4 stroke combustion engine.

Many failures of aftermarket bolts are due to installation error though(caps not seated properly, improper preload, not tq'd down enough, td'd down too much, etc) - you need to install them using a stretch gauge, not just a torque wrench.
I'm still waiting for 1 shred of evidence that the stock bolts stretch within the pcm's limits. My motor should have blown up a long time ago according to the internets.
Old 10-07-2010, 07:05 PM
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Originally Posted by speed_demon24
I'm still waiting for 1 shred of evidence that the stock bolts stretch within the pcm's limits. My motor should have blown up a long time ago according to the internets.
It has. You just don't know it yet.
Old 10-07-2010, 09:51 PM
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Originally Posted by marc97taws6
Lol not sure. My buddy is taking it while I'm at a bus party up in Ames at Iowa State. I think they'll be going around 8 maybe?
Well, I'll be down there for the test and tune so probably around 2-7 I think. If I see it while we are there I will try to get a friend of mine to tape it.
Old 10-07-2010, 10:42 PM
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Originally Posted by Slow94Formula
Well, I'll be down there for the test and tune so probably around 2-7 I think. If I see it while we are there I will try to get a friend of mine to tape it.
You should stay for Midnight madness and tape it!
Old 10-07-2010, 10:44 PM
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Originally Posted by speed_demon24
I'm still waiting for 1 shred of evidence that the stock bolts stretch within the pcm's limits. My motor should have blown up a long time ago according to the internets.
What do you spin yours to? In that case if I up it to a solid roller with ported heads will you guarantee it won't break and bless my car for me?
Old 10-07-2010, 11:39 PM
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Originally Posted by Slow94Formula
Well, I'll be down there for the test and tune so probably around 2-7 I think. If I see it while we are there I will try to get a friend of mine to tape it.
Sounds like I need to come to the track saturday! I'll see if I cant get a couple of my buddies to go too...
Old 10-07-2010, 11:56 PM
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Do it! I'll be down there with a bunch of friends. There is also a Grand Prix/Regal club get together kind of thing down there, and I will probably be parked with all of them.
Old 10-08-2010, 12:48 AM
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I'll see if my buddy's are game. If so i'll be rollin down with a couple other fbody's...we could all park together like a bunch of badasses! lol
Old 10-08-2010, 01:13 AM
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Originally Posted by speed_demon24
I'm still waiting for 1 shred of evidence that the stock bolts stretch within the pcm's limits. My motor should have blown up a long time ago according to the internets.
What do you spin your stock bottom end to?
Old 10-08-2010, 02:18 AM
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redline was set at 6800 on mine for about 26k miles, stock shortblock, 410 rwhp. i banged the limiter probably every single day. possibly including a few (many ) accidental 3-2 downshifts. On one of those 3-2 shifts i recorded 7800 rpm.... The motor was running perfectly until the day I pulled it and sold it to someone else who was replacing their own blown motor.
Old 10-08-2010, 08:54 AM
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Originally Posted by LSWHO
What do you spin your stock bottom end to?
My speedo isn't the only gauge that I have pegged....
Old 10-08-2010, 11:44 AM
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Originally Posted by speed_demon24
My speedo isn't the only gauge that I have pegged....
Originally Posted by Wicked94Z
redline was set at 6800 on mine for about 26k miles, stock shortblock, 410 rwhp. i banged the limiter probably every single day. possibly including a few (many ) accidental 3-2 downshifts. On one of those 3-2 shifts i recorded 7800 rpm.... The motor was running perfectly until the day I pulled it and sold it to someone else who was replacing their own blown motor.
This is funny. I've never a thread about or pics of rod bolt failure, but it's so common to hear of them being a problem. How interesting.
Old 10-08-2010, 11:58 AM
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Originally Posted by Slow94Formula
Well, I'll be down there for the test and tune so probably around 2-7 I think. If I see it while we are there I will try to get a friend of mine to tape it.
Dave and I are leaving Des Moines hopefully around 7:30pm for the midnight drags. There will be Marc's TA, my SS, and my buddies 04 GTO driving up in a group. You guys should hang around for the midnight drags. Master Tomos you and your buddies should do the same thing.

Marc, I told you that you needed to keep the TA and have fun with it while in school.
Old 10-08-2010, 12:04 PM
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Originally Posted by LSWHO
This is funny. I've never a thread about or pics of rod bolt failure, but it's so common to hear of them being a problem. How interesting.
Think of rod bolt failure as "the failure of the rod bolt to do its job", that job being to prevent any momentary separation between the rod and cap. What you see from a rod bolt "failure" are spun bearings and broken rods. Upon teardown, sure, that innocent little rod bolt is just sitting there smiling at you, saying "See, I'm still in one piece, I did MY job"!
Take the cap off and inspect the mating surfaces, and you can see what really happened.
Old 10-08-2010, 12:31 PM
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Originally Posted by bowtienut
Think of rod bolt failure as "the failure of the rod bolt to do its job", that job being to prevent any momentary separation between the rod and cap. What you see from a rod bolt "failure" are spun bearings and broken rods.
Ah, yes. I've heard this before.
Old 10-08-2010, 01:12 PM
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Originally Posted by 69gto96z
Is that on stock heads?
yes, the bowls were polished slightly, but stock runner size!
Old 10-08-2010, 02:23 PM
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Originally Posted by RedRocketZ28
Dave and I are leaving Des Moines hopefully around 7:30pm for the midnight drags. There will be Marc's TA, my SS, and my buddies 04 GTO driving up in a group. You guys should hang around for the midnight drags. Master Tomos you and your buddies should do the same thing.

Marc, I told you that you needed to keep the TA and have fun with it while in school.
I'm pretty sure I will have had enough for the day by the end of the test and tune. But I guess we shall see. lol
Old 10-08-2010, 04:27 PM
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Originally Posted by speed_demon24
I'm still waiting for 1 shred of evidence that the stock bolts stretch within the pcm's limits. My motor should have blown up a long time ago according to the internets.
Talk to any engine builder and see what they say about rod bolts. This isn't just an LT1 engine phenomenon...


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