hello everyone, Im newhere and Im buying a 88 iroc this weekend.Ive dreamed of getting one of these cars all my life.This guy that Im getting it from said he did a 305 to 350 tpi swap and my question is how do I know if it really is a tpi 350 and not a 305?

 

Check the block casting numbers, on the drivers side, right behind the cylinder head. They are NOT easy to see...... but, right down the code, and I think there is a utility somewhere here on the site to see what it is.

 

ok, Ill do that.Thanks for the help.I wish there was a way to tell before I get the car. he said he kept the original computer from the 305 and that it was the same thing.Is this true?

 

Computers the same.

Chip data a little different, fueling, cubic inch, spark, I believe.
Easy to reprogram with a little help.
Or could try to pick up a 5.7 computer or if going to modify in the future,
go the chip route.
Also a little larger injectors, 19# to 22 or 23#.

Computer board on here can will give you all the info you need.
Very knowledgeable


HTH

Later

 

Be careful. When I was looking for my IROC, most guys who said they swapped in a 350 were full of it. The 305 TPI and 350 TPI look the same, so some people try to pull a fast one.

 

how will I know for sure?Im planning on doing upgrades.

 

Post #2

 

If you can get under the car (a reasonable thing to do when inspecting a car you're considering buying), the last three digits of the block casting number are sometimes cast into the side of the block - easier to see than trying to get your face behind the driver side head. You can look them up on www.mortec.com. The last three digits are unique, never duplicated even with all of the digits that proceed.

Odds are it's still got a 305 in it. But, he might be telling the truth.

 

Well the deal fell through with the camaro.I was going to trade my 96 chevy for it but he just called and said he has ran into some major issues with the car. its taking water and having electrical issues.if you know of anyone will ing to trade for a very nice 96 chevy ext please let me know.here are some pics of my truck.

http://s497.photobucket.com/albums/r...childsj/truck/

 

Maybe with the issues he's having you could pick it up at a good price

Enough or more to it your way and come out ahead of the game.

Just a thought.


Later

 

kinda hate to fool with it now. was going to give him my 07 honda 250 ex 4wheeler and my truck. glad he was honest