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Old 06-19-2018, 10:53 PM   #51
LostMy65
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Re: Which engine did you swap to and why?

When my 283 gets tired, I'll probably put in a crate sbc 350. Just because of the simplicity and cost.
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Old 06-19-2018, 11:23 PM   #52
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Re: Which engine did you swap to and why?

Back in the mid+ 80s the choice was the small block chevy 350. Reason? My options were extremely limited.

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Old 06-20-2018, 12:11 AM   #53
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Re: Which engine did you swap to and why?

I might throw a Mopar 318 under the hood just to mess with everyone!!!!!
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Old 06-20-2018, 12:44 AM   #54
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Re: Which engine did you swap to and why?

I'll ship you a 2 bolt main block to save you from the enemy!
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Old 06-20-2018, 02:25 AM   #55
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Re: Which engine did you swap to and why?

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Originally Posted by special-K View Post
Will you really get the bottom end torque of a big block from that LS? Not from what I understand. A great hot rod motor for sure
It would take someone with more knowledge of torque curves than I have to give an honest answer. I know that the peak numbers are often comparable but I haven’t put much on a dyno to be an expert. I do know there are a lot of twisted up muscle cars out there due to some big blocks.
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Old 06-20-2018, 08:13 AM   #56
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Re: Which engine did you swap to and why?

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If one was to pay GM directly perhaps. I paid 2500 for the low low mile combo with all the fixins from a rolled 2014 silverado. After the harness rework, computer work, fuel system mods, oil pan change, motor mount change, exhaust changes etc., it did creep up to 4800. So you are correct, a mild rebuild of the stock motor would have only been around 1800. my guess.
Thats a great deal. No brained to go late model for that price.
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Old 06-20-2018, 09:02 AM   #57
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Re: Which engine did you swap to and why?

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Originally Posted by boynton View Post
It would take someone with more knowledge of torque curves than I have to give an honest answer. I know that the peak numbers are often comparable but I haven’t put much on a dyno to be an expert. I do know there are a lot of twisted up muscle cars out there due to some big blocks.
I know less about LS engines than you, I am sure. But I do know the common knowledge on these is they are no match to the "big block power" in the bottom end. They are their own animal, same as SBC vs BBC. Comparisons are apples to oranges IMO. An LS makes "LS power" and a BBC makes "BBC power". The choices are out there and that is the beauty of it all. The LS is a nice "new" option to add to the great line of Chevy engines. Some like to buy 'em while others like to build 'em

Some might like to try a 292 6cyl turbo swap. Just an old truck motor is all that is

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Last edited by special-K; 06-20-2018 at 09:08 AM.
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Old 06-20-2018, 10:40 AM   #58
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Re: Which engine did you swap to and why?

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I'll ship you a 2 bolt main block to save you from the enemy!
I love being the devil incarnate!!!! Seriously though I may just put the old girl back to stock or if I do go with the cheap alternative it'll be the 318 in my beater, it only has 50,000 miles on it and it is already here.
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Old 06-20-2018, 01:27 PM   #59
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Re: Which engine did you swap to and why?

I've got a pretty decent survivor K20 that came stock with a 350. For me I'm content with keeping it original. It's just a nice weather weekend rig that might only see 1,000 miles locally. Hauling my kayak and camping gear, an occasional run to the lumber yard or hauling stone.. A friend of mine was chiding me about turning it into a beast, but I don't think I want to do that.

Now if I had a total project rig, I'd certainly think about an LS swap.
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Old 06-20-2018, 04:07 PM   #60
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Re: Which engine did you swap to and why?

I went the L31 Vortec route. I wanted something that would be reliable, have good power, and decent economy. I didn't want to mess with electronics (other than the HEI) and I like the sound of a Quadrajet when it gets down to business.

I have a roller cam (HT 383 cam), Vortec heads, a one-piece rear main seal, and it should power my Blazer nicely for years to come.
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