I know the Impala packs 260HP, F-body 275HP (w/o SS), and Vette 300HP, but other than that are they pretty much the same dimensions? I'm still (yes, STILL) in the hunt for a LT1 and cam across a wrecked Caprice Sherrif's Dept car for dirt cheap. It only has 85K on the clock and the motor/driveline is good. Is this gonna be any easier/harder to swap than a F-body or Vette LT1? Any info would be gretaly appreciated! Preesh

 

im not sure....but i would guess they would be pretty much the same...aside from cams...fuel injectors...alot probably from the computer...but try posting a message in the LT1 category on the main message boards...they will tell you for sure...let me know if you find an x-tra one...lol

 

F-bodies and Vettes recieved aluminum heads. Impala's and Caprice LT1's had iron heads.

The Vettes got better exhaust manifolds than the F-bodies or Caprice/Impala LT1 cars.

The iron LT1 heads are supposed to flow just as well as the Aluminum versions from what I've read on these boards.

 

wow I have an f body with an lt1 and it has iron heads not aluminum, it wasnt till 96 or 97 when they made the switch to aluminum. Also watch, the caprice also had a 4.3 v8, that looks just like the lt1, just has smaller cylinder bores.

 

Hey I'm new
Also the Vett LT1 its a 4 bolt main and the F-body, Impala's and Caprice LT1's are 2 bolt main.

 

Thats true, i forgot to mention that stuff. I wasn't aware that LT1's didn't get aluminum heads till 96/97.

I did know about the baby LT1. Fun fun.

 

your's must not be original

93-95 f-body got aluminum heads first design, poor flow
96-97 f-body got aluminum heads second design better flow

all 94-96 Impala/Roadmaster/Fleetwoods got iron heads (medium flow)
all 94-96 Caprice equipped with LT1 (NOT L99 or baby LT1) Iron heads

LT4 heads have the best flow.

all stock of course.

 

Here is a good breakdown of the LT1/4
http://www.automotiverebuilder.com/ar/ar99928.htm

 

No Drakar my 93 LT1 engine is all original and it has cast iron heads, its never even had the valve covers off of it. And its in a Formula, you need to check your source, its wrong.

 

If you bought the car new, then you can say he is wrong, or you can't tell the difference between the 2. I helped tear apart my friends 93 Formula and his (and the 10 other 93's I've seen) all had Aluminum heads.

 

You can tell for sure by sticking a magnet to the cylinder head. If it sticks, It's Cast iron, if it doesn't, it's aluminum.

 

My LT1 is a 93 out of a Vett and it has aluminum head.