Ls motors vs Early gen SBC
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G Atsma (08-05-2020)
The following 3 users liked this post by Toddoky:
08-09-2020, 11:36 AM
#83
I figured I'd give my 2 cents worth, (usually worth less than 2 cents)
been a tech for the last 20 or so years and worked on old sbc and newer ls engines and in my opinion i steer towards the ls for the fact i have never liked playing with carbs, set it and forget it with efi
Have a 93 c1500 with 350 tbi with almost 400,000 km, 70 442 with carb 455 (looking to convert to mefi)
i work on a number of classic cars all carb jobs (bbc, sbc) all work really nicely regardless of weather conditions, all are not stock but are well thought out combos that use well matched parts and tuned properly when built, so they are very drivable on the street
One of these cars doesn't seem to make any sense to me
67 firebird with bbc, blower, dual holley 4bbl carbs
This car was built about 15 years ago and works very good on the street (700ish hp).
In spring all you have to do is turn on ignition to build fuel pressure, pump twice, and fires up !! Let it warm up 10 mins and drive,
hasn't been touched tuning wise since built, just regular maintenance stuff
I say go with what you are comfortable with working on, as you are the one working on it! But definitely consider efi, especially since the retro-fit systems are getting better and better and more refined
Thanks!!
been a tech for the last 20 or so years and worked on old sbc and newer ls engines and in my opinion i steer towards the ls for the fact i have never liked playing with carbs, set it and forget it with efi
Have a 93 c1500 with 350 tbi with almost 400,000 km, 70 442 with carb 455 (looking to convert to mefi)
i work on a number of classic cars all carb jobs (bbc, sbc) all work really nicely regardless of weather conditions, all are not stock but are well thought out combos that use well matched parts and tuned properly when built, so they are very drivable on the street
One of these cars doesn't seem to make any sense to me
67 firebird with bbc, blower, dual holley 4bbl carbs
This car was built about 15 years ago and works very good on the street (700ish hp).
In spring all you have to do is turn on ignition to build fuel pressure, pump twice, and fires up !! Let it warm up 10 mins and drive,
hasn't been touched tuning wise since built, just regular maintenance stuff
I say go with what you are comfortable with working on, as you are the one working on it! But definitely consider efi, especially since the retro-fit systems are getting better and better and more refined
Thanks!!
08-16-2020, 11:55 PM
#84
I figured I'd give my 2 cents worth, (usually worth less than 2 cents)
been a tech for the last 20 or so years and worked on old sbc and newer ls engines and in my opinion i steer towards the ls for the fact i have never liked playing with carbs, set it and forget it with efi
Have a 93 c1500 with 350 tbi with almost 400,000 km, 70 442 with carb 455 (looking to convert to mefi)
i work on a number of classic cars all carb jobs (bbc, sbc) all work really nicely regardless of weather conditions, all are not stock but are well thought out combos that use well matched parts and tuned properly when built, so they are very drivable on the street
One of these cars doesn't seem to make any sense to me
67 firebird with bbc, blower, dual holley 4bbl carbs
This car was built about 15 years ago and works very good on the street (700ish hp).
In spring all you have to do is turn on ignition to build fuel pressure, pump twice, and fires up !! Let it warm up 10 mins and drive,
hasn't been touched tuning wise since built, just regular maintenance stuff
I say go with what you are comfortable with working on, as you are the one working on it! But definitely consider efi, especially since the retro-fit systems are getting better and better and more refined
Thanks!!
been a tech for the last 20 or so years and worked on old sbc and newer ls engines and in my opinion i steer towards the ls for the fact i have never liked playing with carbs, set it and forget it with efi
Have a 93 c1500 with 350 tbi with almost 400,000 km, 70 442 with carb 455 (looking to convert to mefi)
i work on a number of classic cars all carb jobs (bbc, sbc) all work really nicely regardless of weather conditions, all are not stock but are well thought out combos that use well matched parts and tuned properly when built, so they are very drivable on the street
One of these cars doesn't seem to make any sense to me
67 firebird with bbc, blower, dual holley 4bbl carbs
This car was built about 15 years ago and works very good on the street (700ish hp).
In spring all you have to do is turn on ignition to build fuel pressure, pump twice, and fires up !! Let it warm up 10 mins and drive,
hasn't been touched tuning wise since built, just regular maintenance stuff
I say go with what you are comfortable with working on, as you are the one working on it! But definitely consider efi, especially since the retro-fit systems are getting better and better and more refined
Thanks!!
08-17-2020, 12:03 AM
#85
I figured I'd give my 2 cents worth, (usually worth less than 2 cents)
been a tech for the last 20 or so years and worked on old sbc and newer ls engines and in my opinion i steer towards the ls for the fact i have never liked playing with carbs, set it and forget it with efi
Have a 93 c1500 with 350 tbi with almost 400,000 km, 70 442 with carb 455 (looking to convert to mefi)
i work on a number of classic cars all carb jobs (bbc, sbc) all work really nicely regardless of weather conditions, all are not stock but are well thought out combos that use well matched parts and tuned properly when built, so they are very drivable on the street
One of these cars doesn't seem to make any sense to me
67 firebird with bbc, blower, dual holley 4bbl carbs
This car was built about 15 years ago and works very good on the street (700ish hp).
In spring all you have to do is turn on ignition to build fuel pressure, pump twice, and fires up !! Let it warm up 10 mins and drive,
hasn't been touched tuning wise since built, just regular maintenance stuff
I say go with what you are comfortable with working on, as you are the one working on it! But definitely consider efi, especially since the retro-fit systems are getting better and better and more refined
Thanks!!
been a tech for the last 20 or so years and worked on old sbc and newer ls engines and in my opinion i steer towards the ls for the fact i have never liked playing with carbs, set it and forget it with efi
Have a 93 c1500 with 350 tbi with almost 400,000 km, 70 442 with carb 455 (looking to convert to mefi)
i work on a number of classic cars all carb jobs (bbc, sbc) all work really nicely regardless of weather conditions, all are not stock but are well thought out combos that use well matched parts and tuned properly when built, so they are very drivable on the street
One of these cars doesn't seem to make any sense to me
67 firebird with bbc, blower, dual holley 4bbl carbs
This car was built about 15 years ago and works very good on the street (700ish hp).
In spring all you have to do is turn on ignition to build fuel pressure, pump twice, and fires up !! Let it warm up 10 mins and drive,
hasn't been touched tuning wise since built, just regular maintenance stuff
I say go with what you are comfortable with working on, as you are the one working on it! But definitely consider efi, especially since the retro-fit systems are getting better and better and more refined
Thanks!!
Last edited by Shirey97; 08-17-2020 at 12:33 AM.
08-17-2020, 06:50 AM
#86
"....hey I agree but aint a fact like ol boy ahead said "good for a chuckle" lol you guys an this precision stuff ain't facts but sounds good mean while all types of combos from the old old days still win..."
I have carbs and efi in the garage and can work on both. I prefer the efi. Oh, and punctuation.
I have carbs and efi in the garage and can work on both. I prefer the efi. Oh, and punctuation.
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G Atsma (08-17-2020)
08-17-2020, 07:14 AM
#87
TECH Senior Member
iTrader: (7)
"....hey I agree but aint a fact like ol boy ahead said "good for a chuckle" lol you guys an this precision stuff ain't facts but sounds good mean while all types of combos from the old old days still win..."
I have carbs and efi in the garage and can work on both. I prefer the efi. Oh, and punctuation.
I have carbs and efi in the garage and can work on both. I prefer the efi. Oh, and punctuation.
The following users liked this post:
G Atsma (08-17-2020)
04-20-2022, 05:31 PM
#89
You are going to get a lot of LS biased opinions here for sure. We are all drinking the kool-aid, but it is real good kool-aid! For a daily driver car or truck it is hard to beat the new EFI technology. rp0029 gave you a very good recipe. I have been driving my LS1 conversion for over 5 years now and just love it. As for torque, remember that most of the gas powered Chevy trucks for the last 10 years have been LS powered.
You don't need to be afraid of the EFI, it really is pretty simple and once you get it set up, you don't need to mess with it any more.
Pat
You don't need to be afraid of the EFI, it really is pretty simple and once you get it set up, you don't need to mess with it any more.
Pat
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G Atsma (04-20-2022)
04-20-2022, 05:44 PM
#90
TECH Senior Member
I'm answering for him as he hasn't been here for about 2 years
The following 2 users liked this post by Project GatTagO:
99 Black Bird T/A (04-21-2022), G Atsma (04-20-2022)
04-20-2022, 06:03 PM
#92
11 Second Club
iTrader: (3)
I love trolling, especially when you finally get a bite..
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G Atsma (04-20-2022)
04-20-2022, 06:29 PM
#93
ok. I just got in the chat and thought he was making the statement which everyone is in the hype of a LS motor is better. That's all. End of the day, it's preference for the most part.
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G Atsma (04-20-2022)
04-20-2022, 08:08 PM
#96
"As much low end torque as possible" is useless. Can't hook it. Can't use it. Trans will upshift anyway and put you right in the wheezy part of the power band that you declined to develop because you wanted "as much low end torque as possible".
People forget that gears make torque. You don't need a lot of engine torque down low to be snappy, need to think about torque at tire and how the whole drivetrain influences that. But gears won't make up for a lack of power after car is out of 1st gear - sorry. If you want more power then engine simply needs to make more power.
A "daily driver" does just as the name implies --- it drives. And you don't need much throttle input to just drive. A 6.0L LS engine makes enough low end torque to drive well (it's a 6.0L engine for gosh sakes). Put the peak of the torque curve at higher rpm's where it's going to run under heavy throttle and the outstanding LS cylinder heads will support it.
People forget that gears make torque. You don't need a lot of engine torque down low to be snappy, need to think about torque at tire and how the whole drivetrain influences that. But gears won't make up for a lack of power after car is out of 1st gear - sorry. If you want more power then engine simply needs to make more power.
A "daily driver" does just as the name implies --- it drives. And you don't need much throttle input to just drive. A 6.0L LS engine makes enough low end torque to drive well (it's a 6.0L engine for gosh sakes). Put the peak of the torque curve at higher rpm's where it's going to run under heavy throttle and the outstanding LS cylinder heads will support it.
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G Atsma (04-20-2022)
04-20-2022, 10:44 PM
#97
I'll take the bait.....How did I miss this thread or maybe I didn't and so old that I forgot about it?..either way Stock for stock the LS is a superior design and that should not even be in the discussion. You can make anything make power if you throw enough money at it. If you have an unlimited budget both can be made to make similar power. The beauty of the LS is the fact that you can make serious power with almost all stock OEM parts and you could never do that with a SBC, The stock SBC heads even ported (including vortec) can't compete with stock LS heads, The stock LS short block is stronger. The gasket sealing design is better, The intake being plastic and not passing coolant thru it is better. GM kept many of the traits that made the SBC better than the competition and transferred them to the LS platform and made it better at the same time.
Not so long ago you could have built a SBC and made more power per dollar than the LS but that's all but been eliminated. If you already have a bunch of money tied up into your current SBC then you would have a good reason to stick with it, If you are starting a build from scratch then the LS platform should be a no brainer.
Not so long ago you could have built a SBC and made more power per dollar than the LS but that's all but been eliminated. If you already have a bunch of money tied up into your current SBC then you would have a good reason to stick with it, If you are starting a build from scratch then the LS platform should be a no brainer.
The following 3 users liked this post by LLLosingit:
04-21-2022, 08:34 AM
#98
Love to see you crank 1,500+ hp out any stock bottom end SBC.
Definitely one of the most naive trolling comments made in a long time on the forum.
SBC are nice engines but time passed the SBC by design wise as LLL mentioned above stock vs stock.
One can build a nice SBC, for sure just needs practically every part replaced with an aftermarket part. I have a Dart SHP 400 in my 72 Vette that's pretty typical of that approach. With a opportunity to do over, I'd replace the Dart SHP 400 would be replaced in a heart with a tweaked LS7 of some sort.
In racing, its preference and budget as some folks still run Pontiac engines 😀
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G Atsma (04-21-2022)
04-21-2022, 10:13 AM
#99
TECH Senior Member
The very best OEM SBC head can barely do what the smallest LS head (the 706) can do.
