So it followed me home...

Can I keep it mom and dad... 95 9c1, fresh paint and other new stuff. Bad news a knocking lt4 (Yes lt4 not lt1). Many days of fixing coming up. My Impala is now officially a daily driver, the 9c1 is the project car.

Pretty cool! You don't see many PPM cars around!

So where did it come from?
AND....
How do you know its an LT4?
Cuz LT1's knocking sound JUST LIKE LT4's....

sdstick wrote:

Cuz LT1's knocking sound JUST LIKE LT4's....

So you're saying that my Marshmallow has an LT4 in it????

Came from my gf's Brother. I personally know the owner before him, got it from the auctions. I can't honestly state for a fact it's an lt4 but the car is known around my circle of friends and I've heard independantly a bunch of times it's an lt4 so I'm going with it. Speaking of which anyboby know what to look for to confirm it is in fact a lt4?

Well, they never came with an LT4. So if it is, it's been swapped in, or converted. Look for a red intake and aluminum heads, to start.

This may help, but only 2 or 3 things you can see without going in.
If its knocking, your going in anyway right.

http://www.grandsportregistry.com/lt1vslt4.htm

Looks like a decent car. But, looks very stock undr the hood.

We need some proof positive of this lt4 flim-flam. I just hope its not an l99... That would suck a little. If it is one, and knocking, you can always swap in an lt1. It's ok tho. I was told yesterday that my 9c1 only came with the impala interceptor motor. SMH. Very convincing argument the guy had, but no.

Like I said I know the history of the car it is a swapped motor, Weather it's really an lt4 is to be determined. I was told years ago that the guy who bought it at the auctions did the swap before even registering it.Legend has it the motor came from a 96 stick vette again I can't prove it but right off the bat it does have aluminum heads. To be continued...

@ Sdstick thanks for the link that should be helpful.

The thing that I saw (besides the red manifold Crovo noted) was the extra material on the intake runners where the manifold hits the heads
The LT1 had very little horizontal material at that point
LT4 had an extra 1/4" or so flat (extra) material there.
Dont know much about it, only what I read.
http://www.grandsportregistry.com/lt1vslt4_intakes.htm
Seems like most of it is internal
Good luck figuring it out
Innocent until proven guilty....

Picture me

Eating my words.

took off home plate,no red intake(maybe swapped at time of engine swap). Then Popped off a valve cover,no roller rockers... So ya it's an lt1.
Oh well I was kinda questioning it myself now I know.

Just ran the casting numbers on the head 10207643. Lt1-2 Lt4-0. Lt1 wins hands down.

So thats an aluminum head anyway
Thats probably where the "legend" started.
At least it isnt 10208890 baby LT1
Also found out LT4 heads have "LT4" cast into them

Probably a Vette engine but F-bodies used the same heads and it's a popular swap for the cast iron heads. I think GM started using those in '96.

I want a bull bar

chapel wrote:

I want a bull bar

Overrated. Trust me, when cops see one on a vic, they laugh their asses off. I did. But I bet Jim wouldnt mind trading some parts for that push bar to put on his MSP 9C1. On the other hand, today, ironically, while passing through Seekonk, a detail cop had a dark blue roadmaster with N97's, caps, the roof, hood, and trunk painted like and MSP cruiser just not the doors. It had that same style push bar mounted to the front commonly seen on MSP cruisers back in the 90's. That was the first thing I did to my 9C1 before I moved it from the lot, relocate the push bar to the trunk.

MASShole9C1 wrote:

chapel wrote:

I want a bull bar

Overrated. Trust me, when cops see one on a vic, they laugh their asses off. I did. But I bet Jim wouldnt mind trading some parts for that push bar to put on his MSP 9C1. On the other hand, today, ironically, while passing through Seekonk, a detail cop had a dark blue roadmaster with N97's, caps, the roof, hood, and trunk painted like and MSP cruiser just not the doors. It had that same style push bar mounted to the front commonly seen on MSP cruisers back in the 90's. That was the first thing I did to my 9C1 before I moved it from the lot, relocate the push bar to the trunk.

It'd make a good pusher car though. I've had to push a few VWs in my day

Ha, lol. Very true. I would put one on an old 80's cheyanne or something and make like a "track push truck" out of it, and slam it to the ground.

Yup, that's the push bar that I want.

Dibs!

The push bar is totally staying on the car its my favorite part!!!