pettrix

100%. Back in the 90's, Oldsmobile was already putting Chevy corporate engines into Oldsmobile's. GM didn't give a cr*p about keeping an Olds vehicle with an Olds specific drivetrain. Even the last ever produced 2004 Oldsmobile Alero, it had the 3.4L corporate Chevy engine that went into Chevy's, Pontiac's, Buick's and Olds of course.

GM has no loyalty to anyone but themselves. They didn't give 2 cr*ps about Oldsmobile or the Olds customers. They buried the brand and even its records. The whole story of a fire in the Olds plant and loss of records is 100% BS. It was revealed years ago that GM basically threw out the records into the trash bin and used the fire in the Olds plant as an excuse that they don't have the records for vehicles made in the 60's and 70's.

Back to the point. LS engines is a good powerplant choice for an Olds and still "pure" GM. A stock LS3 head flows 320cfm, that is about twice the flow of a stock iron head Olds. Many people have added a cam and kept the stock LS heads and made over 600 rwhp.

olds 307 and 403

Why should we care if it stays GM powered at all? Dodge built a car both my Wife and I wanted. They were a GM family and so were we after Dad had one too many bad 1970's Fords. If GM could build something similar that didn't make me want gouge my eyes out when I look at it, or have a Cadillac price tag, I would buy one. The new Blazer vs new Bronco shows how retarded GM is these days.

VORTECPRO

I have a 5.3 in a 2000 GMC, doesn't pull very good. Have a 5.3 in a 2019 GMC pulls very good. The older 5.3 is worthless in a truck. My 98 350 Vortec GMC pulls as good as my 2000 5.3 1500. Anybody want to but a pristine 64,000 mile 2000 GMC?

olds 307 and 403

Well said, the Gen 5 direct injection are night and day better for power and noticeably better fuel economy. I drove a 03, 04 5.3 a lot with the 4L65E, I took out the 3/4 clutch pack towing a piddly amount on the 03. Add in the crappy 4L60-70E trans and really have crappy unreliable, underpowered trucks. The 11 5.3, could never find it's power band even with the 6 spd auto. I have also drove a 05 6L, worn out to be fair but very weak. Our current 11 3/4 at work with 6L 6 speed auto is only acceptable. The two 17 5.3 8 speed were night and day better than them all. I have to think GM over estimated the power numbers similar to the 350 TBI truck motors which only actually put out 185 hp vs the 210 rated.

olds 307 and 403

To further how these LS suck as truck engines, I was hauling 6500 to 7000 pounds. I gave the 6L in the 11 3/4 ton a decent amount of gas, brought it up to maybe 3500 rpm, it took forever to get from 45 mph to 60 mph. It must sit in 5 gear, in tow mode at 60 mph, just over 2000 rpm vs just under not towing. When I came to the next acceleration turn off and brought it up to 4000+ rpm, it finally got out of it's own way. I need to drive one of these in a car, maybe then I see what the big deal is🤷‍♂️.

RetroRanger

I just saw an LS miata swap FS on CL.

it looked very well done and im sure woke that car right up

owner was a GM mechanic according to the ad

50K

no1oldsfan

Was that in south Texas? Good friend of mine has done that swap a couple times.

70W-32

I see a lot of these LS swaps for sale for relatively cheap. Cant figure out why someone would go thru all the work, and then put the car up for sale for $8k-11k.

RetroRanger

https://worcester.craigslist.org/cto...377386342.html

ach1992880

Rent free, dude. Nobody is posting to this thread except people hating on LS swaps. If you find yourself in Omaha, you can drive my no knowledge garage swap Cutlass. I would like to see your honest opinion of a 370" ported head LS with a nicely coupled overdrive and converter. It makes for a very lively car that just begs you to have fun.

69HO43

Um, LS swap into a perfectly good Olds making you throw up a little in your mouth is kinda the whole point of the thread.

RetroRanger

im not a LS hater. I posted a miata w an LS thats gotta be a fun car!

i think most here would rather see an olds w olds, nothing wrong w that. For years i hated on the SBC in street rods because putting a ford in Ford was to hard difficult expensive.

doesnt matter its someone elses car i can still appreciate the work involved.

ill take you upon your offer to objectively evaluate your car for you, if you can include airfare, a weeks stay,and some snowmobiling too
otherwise i think it sounds nice

heres a miata LS pic i couldnt post before looks pretty clean but not 50k clean maybe a little tight in there too

olds 307 and 403

Still doesn't make them good truck engines, they suck terrible even compared to the LT motors that replaced them. Pretty sure my 358 Olds V8 with all the good parts will be plenty of fun and make power below 4000 rpm.

RetroRanger

My old ford truck had a 4.6l, one day i met another 4.6l owner. As i blathered on about how stout it was like the old 302s of yore, i could see the guys jaw drop. He didnt like his, to slow no power etc (we both agreed the mileage was not great).

i was convinced we didnt drive the same way, i towed my travel trailer thru VT hills and would routinely pass slower traffic up the hills w trailer in tow. He couldnt believe it. I would punch and hold it to the boards as needed those 4.6s made torque and hp in the higher rpms (like the old 302s) he seemed to drive his more conservatively keeping the rpms low.

either way the thread is sick of LS swaps...so probably not a lot of LS love here

olds 307 and 403

These new motors rev to the moon but are not torque motors. Just think the LS as two Honda 4 cylinder shoved together. The Pentastar V6 in my Challenger does well for what it is, 3000+ rpm through the hills is nothing for it, 6500 rpm redline. I will say, these modern motors could probably sit at 3500 rpm for hours on end. I would hope so, considering their power band is above that rpm.

RetroRanger

thats true they need the revs to see appreciable torque.

the truck after the 4.6 l i opted for a v6 w twin turbo, vs the v8. The v6 made all the hp and torque from 2500rpms plus. The v8 was closer to 3800 rpms plus.

nowthe problem is tires apparently the downside to lots of tq n hp availible is lots of tires

olds 307 and 403

One thing I like that Ford is now doing is dual injection. It eliminates the carbon issue in the intake tract. They also put off DOD on the 5L till 2021, it causes cam wear. We will see if their DOHC suffers the same as the Hemi and LS did. Yeah, the EcoBoost makes serious torque from low rpm, exactly what you want in a truck. The little Pentastar isn't as high output at GM's 3.6 but makes 90% of its torque from 1500 rpm, is durable, no timing chain issues, both Ford and GM's DOHC V6 had those issues, no oil use issues like GM's direct injection 3.6 and no carboned intake tracts with port injection. My Challenger has a useable back seat, trunk, AWD, tows my boat, gets nearly 40 mpg Imperial on the highway and will run 14's in the 1/4. Just a great driving car. I'm not much of a truck guy, everyone is truck crazy here in the Texas of the North. I see trucks as a necessary evil, I bought 4 studded Goodyear Duratrac agressive all terrain tires for my pathetic Dakota. The 5.9 Magnum is at least all torque production. They have plenty of issues and horrible mileage. Probably don't like ttucks because I drive big Freightliner's for a living, hauling 30,000+L of fuel to farmers. They are terrible trucks FYI.