Keep the 9-1/4. Don't want to make it complicated.
Yep, with a 3.55 SureGrip.
LS motor in NYB
- Thread starter Payton Mitchell
- Start date
Yep, with a 3.55 SureGrip.
The LS-family engines might have better combustion dynamics than some older engines do, BUT the potential fuel savings comes more from the cylinder deactivation activities, which relate to engine LOAD (tail winds help, by observation!!) and road speed. Plus the 6-speed automatic. The other thing is vehicle aerodynamics. There are LOTS of little aerodynamic things on the current GM pickups, for example, which allow them to average approx. 18-20mpg I the way I'm driving them during the day. The best mpg has been 29.4mpg, but that was when it was in V4 mode with a tailwind on the freeway. BTAIM
The LS family, like the Chrysler engines, has been refined to take friction out of the motor. But many of these things can be done to a B/RB or LA engine too. The optimized fuel curve map and the ignition advance maps are optimized for every degree of throttle position travel, too. These items will increase build-cost, though. AND almost all of them will not be visible on the surface, but hidden under some sort of sheet metal "cover".
End result is that IF you were chasing fuel economy, with the conversion kits for GM vehicles running around $1500.00 (for a universal kit), that's a bunch of gasoline that must be saved!
And that's not including the hours to make it all work in the chassis you've got. Take THAT money and find a $3000.00 car to drive daily, using the NYB for lookin' good as it rolls down the road, in a stately manner. PM me for recommendations of that $3K car.
CBODY67
traintech55
Senior Member
You should be banned from the site for saying such a terrible thing.
My last straw with those GMG jackholes was when they cut up a perfectly nice 340 car to swap in a late model driveline... if GYC goes there... can I quit watching them twice?
I always take threads like this with a grain of salt.
99% of the time, the guys that are serious about a swap like this are posting pictures of the swap they did rather than asking if anyone else has done it.
That said.... I have said more than a few times that a good, late model, engine swap would save a lot of C-body cars that have had their engines taken out for some A/B/E-body engine swap. They pop up here all the time and we've seen some really nice iron go to waste.
So... Doing that type of swap would make some sense. You could have a great running car with all the benefits of the late model drivetrain. To me, the question is if doing a LS swap is more desirable than doing a late model hemi.
People have been putting Chevy engines in everything since 1955 when the SBC was first produced. It has some advantages... Every street corner has SBC parts and engines for sale and there's everything under the sun available. The late model hemi isn't far behind though. There's enough of them around... and enough knowledge and parts to make the swap about as easy as the LS swap. There's a lot of advantages too... First is the swap has been done a few times and the details are out there. Second, most guys on a board like this would be more likely to provide help to an all Mopar build. Third, the car will appeal to a larger market once you grow tired of it and want to move on to the next project.
Personally, I would stay with the original engine... When I read stuff like "I want to update to" and I usually see that the owner really doesn't like the old car "experience" that the rest of us do. Whatever...
But looking at the other posts by the OP, I'm gonna say that the best bet is to just sell the car to someone that will enjoy it and move on to something that can do burnouts.
99% of the time, the guys that are serious about a swap like this are posting pictures of the swap they did rather than asking if anyone else has done it.
That said.... I have said more than a few times that a good, late model, engine swap would save a lot of C-body cars that have had their engines taken out for some A/B/E-body engine swap. They pop up here all the time and we've seen some really nice iron go to waste.
So... Doing that type of swap would make some sense. You could have a great running car with all the benefits of the late model drivetrain. To me, the question is if doing a LS swap is more desirable than doing a late model hemi.
People have been putting Chevy engines in everything since 1955 when the SBC was first produced. It has some advantages... Every street corner has SBC parts and engines for sale and there's everything under the sun available. The late model hemi isn't far behind though. There's enough of them around... and enough knowledge and parts to make the swap about as easy as the LS swap. There's a lot of advantages too... First is the swap has been done a few times and the details are out there. Second, most guys on a board like this would be more likely to provide help to an all Mopar build. Third, the car will appeal to a larger market once you grow tired of it and want to move on to the next project.
Personally, I would stay with the original engine... When I read stuff like "I want to update to" and I usually see that the owner really doesn't like the old car "experience" that the rest of us do. Whatever...
But looking at the other posts by the OP, I'm gonna say that the best bet is to just sell the car to someone that will enjoy it and move on to something that can do burnouts.
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commando1
Old Man with a Hat
I didn't want to go there but that was my first opinion, too.
Payton, tell us more about yourself and what is your real goal. A lot of smart people here and maybe they can come up with realistic avenues for you.
We have worse said without banning folks.
Agree 1000% with this statement.
i think for the money spent on an ls swap, you could get aftermarket fuel injection and an o/d transmission. even then you will probably never get over 16-18 mpg.(about the same as a modern pickup) it's a matter of size, weight ,aerodynamics and driving practices.
I thought my Polara got 15 mpg and was giddy as a school girl, til I ran it empty and found out the tank was 10 gallons bigger than I thought. I got over that I'll never drive my Polara for mileage, just for fun.
PontiacJim
Member
On the GTO board I am on we get the LS swap from the younger crowd that see it as big horsepower, better gas mileage, and dependability all rolled into one. Of course the GTO image is based on its Pontiac engine, but then the LS goobers seem to come back with "its a GM engine" and thus the 389/400/428/455 engine comparison because Pontiac's were of GM. All I can say is either you get or or you don't and the younger generation does not see the image in these cars as we do/did in growing up with them. Anyone putting an LS engine in a GTO should have the keys snatched out of their hands, the car repo'd, and banned from ever owning a Pontiac (or maybe pass them on to the C-Body crowd, LOL). BUT, I can be skeptically convinced of, and barely tolerant of the swap IF the car was a real basket/bucket case and the LS was a means of saving/resurrecting a car that might have otherwise been used for parts or scrapped - although I don't want to see it stinking things up at my car show area.
Pontiac engines are becoming harder to find if needing one to rebuild, so prices are expensive for core engines and then rebuilding one is no longer cheap. The LS of course is cheaper to obtain or rebuild, but can put the costs close to or above a stock Pontiac rebuild when you have to start upgrading to things like electric fuel pumps and include the transmission change, modifying the mounts, cutting the driveshaft, changing wiring, etc. that is not needed if you simply had kept it Pontiac. The resale can be hurt as most will want a Pontiac engine in a Pontiac, but if sold to someone of the "younger" generation who has been exposed to the Holden GTO's of late, they will want the LS anyway.
So sadly, LS engines find their way into GTO's and other Pontiac bodies and eventually they will infect the Dart's, Demon's, Challenger's, Cuda's, Roadrunner's, and all our big cars - its a damn epidemic and like aids, it has no cure. Its time we all join AARP and rally together to get Congress to pass a law that requires the engine make to match the car make and nip this LS insanity and disrespectfulness in the bud! What's next, a 455 Pontiac in a Superbird? God save the Queen - and I'm not even British.
Pontiac engines are becoming harder to find if needing one to rebuild, so prices are expensive for core engines and then rebuilding one is no longer cheap. The LS of course is cheaper to obtain or rebuild, but can put the costs close to or above a stock Pontiac rebuild when you have to start upgrading to things like electric fuel pumps and include the transmission change, modifying the mounts, cutting the driveshaft, changing wiring, etc. that is not needed if you simply had kept it Pontiac. The resale can be hurt as most will want a Pontiac engine in a Pontiac, but if sold to someone of the "younger" generation who has been exposed to the Holden GTO's of late, they will want the LS anyway.
So sadly, LS engines find their way into GTO's and other Pontiac bodies and eventually they will infect the Dart's, Demon's, Challenger's, Cuda's, Roadrunner's, and all our big cars - its a damn epidemic and like aids, it has no cure. Its time we all join AARP and rally together to get Congress to pass a law that requires the engine make to match the car make and nip this LS insanity and disrespectfulness in the bud! What's next, a 455 Pontiac in a Superbird? God save the Queen - and I'm not even British.
65sporty
Old Man with a Hat
What about a BBC with Poncho prostock heads into a Poncho?
PontiacJim
Member
What about a BBC with Poncho prostock heads into a Poncho?
NOPE! Still a Chebby. Poor old Pontiac engineers were just grasping at straws 'cause the real Pontiac engines were dead and they were crying in their beer. LOL
65sporty
Old Man with a Hat
The pro stockers ran good though with the Poncho desgined stuff, they all embraced the BBC, even OLDS with the DRCE engine block
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