1997 5.7L thunderbolt ignition. Slow crank

[alldodge]

I've never pulled a motor by removing the screws holding the mount, always removed the top nuts and rear bolts. It might be easier to do so I just have never done it that way

 

[Scott06]

I've never pulled a motor by removing the screws holding the mount, always removed the top nuts and rear bolts. It might be easier to do so I just have never done it that way

I dont think it matters dealers choice. On my set up the lags were easier to get to with a wobble extension due to a side panel that made the bigger nuts harder to swing off.

 

[nola mike]

I dont think it matters dealers choice. On my set up the lags were easier to get to with a wobble extension due to a side panel that made the bigger nuts harder to swing off.

Only thing I don't like about removing the lags is messing around with a penetration into wood. Mine are gooped in there pretty good with 4200 now.

 

[findinghomer]

It's not a thing. You hang the motor from the hook, and rear mounts. Align, then add the mounts, then realign

Oh, I didn't know that you align it while it was still hanging. I had planned on using my brother's shop to drop it in, then once I got it home worry about aligning it. I just wanted it to be dropped in real quick. Is that a problem to do it that way? Or is it just easier to do it while it's still hanging?

 

[findinghomer]

Only thing I don't like about removing the lags is messing around with a penetration into wood. Mine are gooped in there pretty good with 4200 now.

Yeah that's what I had taken into consideration, the only reason I did it last time was so that my alignment would be pretty close to where it was (ended up being exactly where it was didn't even need to align it) . That's why I was asking because this time I'm going to have to align it regardless..

 

[nola mike]

Much easier when hanging, but possible without. Raising/lowering the front with a hoist is much quicker than turning the adjusters individually a turn at a time.

 

[findinghomer]

Much easier when hanging, but possible without. Raising/lowering the front with a hoist is much quicker than turning the adjusters individually a turn at a time.

Okay thanks. I just needed to make sure it was possible without it hanging, because I might not have that option. I was just wanting to drop the motor in at my brother's mechanic shop and then take it home and deal with it from there. I didn't want to take up a whole bunch of their time

 

[Scott06]

Oh, I didn't know that you align it while it was still hanging. I had planned on using my brother's shop to drop it in, then once I got it home worry about aligning it. I just wanted it to be dropped in real quick. Is that a problem to do it that way? Or is it just easier to do it while it's still hanging?

You do It either way but hanging is easier but I could shove my engine around when sitting on the engine mount stringers

 

[findinghomer]

@all

Yes, that is a carter electric pump

Okay I have found this engine on eBay, was just about to purchase but then I realized it said it's a TBI motor. Does that mean it won't have the mechanical pushrod installed for a mechanical fuel pump with the lobe on the camshaft? And it does not have roller cams? I have messaged the seller but received no response yet. If that's the case should I stay away from this one? Also if that's the case I might as well go back to vortex if I have to add an electrical fuel pump?

https://www.ebay.com/itm/267741102242?_trkparms=amclksrc%3DITM%26aid%3D777008%26algo%3DPERSONAL.TOPIC%26ao%3D1%26asc%3D20250528153745%26meid%3Defa35758f2c4417499381dac2bfd5c62%26pid%3D102800%26rk%3D1%26rkt%3D15%26mehot%3Dnone%26itm%3D267741102242%26pmt%3D1%26noa%3D1%26pg%3D4375194%26algv%3DRecentlyViewedItemsMobileV2WithMLRPboosterAndUpdatedFeaturesImageDedupe_BP%26brand%3DUnbranded%26tu%3D01KZ3RYHGNMTZWP4ZFGD0D1KPQ

 

[Scott06]

@all

Okay I have found this engine on eBay, was just about to purchase but then I realized it said it's a TBI motor. Does that mean it won't have the mechanical pushrod installed for a mechanical fuel pump with the lobe on the camshaft? And it does not have roller cams? I have messaged the seller but received no response yet. If that's the case should I stay away from this one? Also if that's the case I might as well go back to vortex if I have to add an electrical fuel pump?

https://www.ebay.com/itm/267741102242?_trkparms=amclksrc%3DITM%26aid%3D777008%26algo%3DPERSONAL.TOPIC%26ao%3D1%26asc%3D20250528153745%26meid%3Defa35758f2c4417499381dac2bfd5c62%26pid%3D102800%26rk%3D1%26rkt%3D15%26mehot%3Dnone%26itm%3D267741102242%26pmt%3D1%26noa%3D1%26pg%3D4375194%26algv%3DRecentlyViewedItemsMobileV2WithMLRPboosterAndUpdatedFeaturesImageDedupe_BP%26brand%3DUnbranded%26tu%3D01KZ3RYHGNMTZWP4ZFGD0D1KPQ

it depends on what block they used for a core. the block with out the fuel pump provision have the boss cast just not drilled so they can be drilled out for a mechanical fuel pump. I would wait for the seller to confirm.

I have yet to own a boat with too much power so if it were me I would do the vortec and adapt an electric pump and enjoy the extra power. Since the seller is a rebuilder they mak be able to provide a mechanical fuel pump ready block with vortec heads. That is what merc does with their 357 Alpha/bravo remans that have 4 bbl carbs

 

[Scott Danforth]

That motor is a TBI swirl port motor. not worth it unless it was the last running block on the planet and you had to rescue yourself from death.

that is a significant step backwards from a vortec headed motor

 

[findinghomer]

That motor is a TBI swirl port motor. not worth it unless it was the last running block on the planet and you had to rescue yourself from death.

that is a significant step backwards from a vortec headed motor

Lol. Point taken. I guess my confusion is I thought they were all the same, Base engine it just depends on what intake manifold/ fuel delivery system you use? It's a TBI bad because it doesn't have the roller lifters/cams? He does say he has some with roller lifters. But now I'm leaning back to the vortex. I got the motor pulled today, a guy who helped me looked at the head he said it lost a valve seat and ended up in the Piston chamber and chewed out the Piston

 

[Scott Danforth]

TBI motors got the "swirl port" heads as GM got their butt spanked on the LT1 reverse cooling by both John Evans (on the cooling system) and the patent on the Ricardo combustion chamber. in 1996, the Ricardo patent hurdle was cleared when the vortec heads came out

the swirl port heads were supposed to be low RPM, high torque for lugging around town in a delivery truck. the flow rates on the swirlport heads drop off way to much at the upper end in their stock configuration

Lol. Point taken. I guess my confusion is I thought they were all the same,

GM has probably 300 different small block head castings and about 150 different block castings since the small block came out.

. I got the motor pulled today, a guy who helped me looked at the head he said it lost a valve seat and ended up in the Piston chamber and chewed out the Piston

if the bore is good, a piston/rings/rod assembly from GM is cheap

 

[jimmbo]

GM got their butt spanked on the LT1 reverse cooling by both John Evans (on the cooling system) and the patent on the Ricardo combustion chamber. in 1996, the Ricardo patent hurdle was cleared when the vortec heads came out

Evans lost to GM in the Courts.
About 100 yrs ago, GM reversed engineered the Combustion enough to recreate the the turbulence, and not infringe on Ricardo's Patent, which was issued in the 1920s. Also the Ricardo patent was for Flathead Heads, GM's design was for an OHV engine, thus sidestepping the Patent
I have had 4 of the LT1s, still have 3 of them, they have been very reliable engines

 

[findinghomer]

If the bore is good, a piston/rings/rod assembly from GM is cheap

Just had gouges at the top, he said it could be "sleeved' and that the other cylinders looked fine. I contacted my local builder , would like him to look at it. But the guy that looked at it thinks id still be in the 3500-4500 ball park

 

[Scott Danforth]

that is not a good bore.