A few days ago I picked up a fully dressed 355 TBI that I'm in the process of swapping into my 91 bird that currently has the LO3. The motor was previously in a 92 RS and is pretty much a plug & play into my car. I also got the 350 computer & chip with it.

Here's the specs that I have on the rebuild of the motor roughly 35K miles ago:

Bored .30 over
9.8:1 compression.
Hypereutectic pistons.
HD rods.
Stock 305 heads, ported and polished, 3 angle valve job, machined surface, cut pockets.
Competition Cam, 211/221 @ .050, 110 lobe seperation.
Port and gasket matched intake/heads
Stock TBI with 350 injectors.
180* stat.
Accel module/coil.
Edelbrock headers.
Custom programmed Superchip

The block casting # is 10054727 which google searches tell me is from an 86-up Chevy truck. In front of the passenger side head it has a stamp of K1107TPA, which I think is a date stamp, but I don't know how to decipher it.

The heads have casting #14102187. I have no idea what they're from since I've found different info on what these came in/on. I'm thinking that they came from an LO3, but I really don't know.

My questions are:

What is a rough estimation of HP that I can expect from this setup?

What are my heads from?

How old is my block?


....Any help is greatly appreciated.

 

Block & head casting # information: www.mortec.com

Is that 9.8:1 CR with 350 heads, or 305 heads?

The block could be passenger car or truck. The heads are L03's.

 

I think the 9.8:1 is with the 305 heads.

I failed to mention earlier that the block says Canada on the rear passenger side.

 

Well, the old 220K+ mile 305 is out so I figured I'd post up a pic.

 

The 355 is in, and it runs.

Now I just have to put the nose back on the car and button up the exhaust.

For more info on my swap, here's the day by day thread on my local thirdgen site:

http://www.austinthirdgen.org/forum/...opic=4043&st=0