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Old 01-25-2010, 01:32 AM   #1
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Default Series 1 3800 Bottom end

I apologize if this is too many threads, but I believe some of these discussions are indeed independent, albeit for the same purposes.

I'm looking to get more power and reliability out of my L27. I would swap a series 2 in there, but I don't have the $2500 necessary, and I like my car as it is.

My question now is, I know the L27 pistons, rods, and pins are weaker than the ones on the Series 1 L67. In addition,I've heard L67 pistons also have a heat dissipating coating of some sort.

My question is, would there be any benefit to running L67 pistons and rods in an L27 that is not boosted?
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Old 01-25-2010, 07:42 AM   #2
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If you aren't going boosted, then there shouldn't be any additional benefit.

If you are looking for a low cost S2 motor/trans, watch craigslist for a crashed car. GTP/Regal GS/SSEi Usually can be had for around $500-$1000
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Old 01-25-2010, 11:11 AM   #3
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Originally Posted by BillBoost37 View Post
If you aren't going boosted, then there shouldn't be any additional benefit.

If you are looking for a low cost S2 motor/trans, watch craigslist for a crashed car. GTP/Regal GS/SSEi Usually can be had for around $500-$1000
Unfortunately, I would need more than just the engine and wiring harness to get this project going.

Thanks for the reply though.
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Old 03-13-2010, 03:11 AM   #4
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Before I built my */c motor I had a top swap on my stock L27 bottom end, It held up pretty well.
I ran it for about 40,000 HARD miles.
When i tore it apart I had a cracked piston and the head gasket was burned, but the rods and crank were in good shape, not to bad for what I put it thru.
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Old 03-15-2010, 04:09 PM   #5
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Originally Posted by oldsrocket View Post
Before I built my */c motor I had a top swap on my stock L27 bottom end, It held up pretty well.
I ran it for about 40,000 HARD miles.
When i tore it apart I had a cracked piston and the head gasket was burned, but the rods and crank were in good shape, not to bad for what I put it thru.
Isn't it easier to swap a series 1 L67 than it is to top swap an L27?
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Old 03-15-2010, 05:33 PM   #6
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Isn't it easier to swap a series 1 L67 than it is to top swap an L27?
Uhh why would pulling an entire engine out be easier than just unbolting the top and putting the new one on? Both sound simpler than they really are but the top swap would be easier most likely.
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Old 03-16-2010, 04:27 AM   #7
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Uhh why would pulling an entire engine out be easier than just unbolting the top and putting the new one on? Both sound simpler than they really are but the top swap would be easier most likely.
Because 40,000 miles later, you don't need to worry about pulling it **again** to replace pistons, head gaskets, and potentially rods and/or bearings. A Series 1 top swap is not the same as a Series 2 top swap. Yes he drove it hard, but who would supercharge their car to not drive it hard?

IMO pulling an engine is easier than pulling heads. I pulled heads on a Jag V12 and it took less time to pull the engine out and put a new one in than it was to remove the heads. How long do you figure pulling an engine would take?
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Old 03-16-2010, 08:32 AM   #8
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An engine swap is quicker for me. Pulling heads means pulling the intake, throttle body, UIM, LIM, valve covers, rockers, accessories etc. Being in the car, it'* a pain. A motor to me is drain fluids, disconnect hoses and electrical, yank.
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Old 03-16-2010, 04:02 PM   #9
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Don't forget a S1 top swap doesn't require you to swap heads.
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Old 03-16-2010, 06:10 PM   #10
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Because 40,000 miles later, you don't need to worry about pulling it **again** to replace pistons, head gaskets, and potentially rods and/or bearings. A Series 1 top swap is not the same as a Series 2 top swap. Yes he drove it hard, but who would supercharge their car to not drive it hard?

IMO pulling an engine is easier than pulling heads. I pulled heads on a Jag V12 and it took less time to pull the engine out and put a new one in than it was to remove the heads. How long do you figure pulling an engine would take?
I wouldn't have any idea how hard it is to pull the engine. I was just wondering why it would be easier. I have been inside the top of mine to replace the gaskets, obviously I didn't pull heads though so also have no idea how hard those are.
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