I need an engine for my 93 typhoon. I'm looking for a long block, but I'm having a hard time finding one local. I was just curious what is different between the sy/ty engines and just a standard chevy v6? What I'm getting at is can I put an engine out of like a 1998-2000 s-10 or chevy van? I know I will have to change all the exhaust, pullies, and front end brackets. But I have a fealing that the sy/ty engines may have came with lower compression and maybe even a different cam? Also I know the sy/ty's came with hyper-rejectics do the later v6 engines come with forged? Please let me know any info you can.
SY/TY engine question?
- Thread starter FLYNSUV
- Start date
If you have a feeling that syty engines came with lower compression I recommend you do some more reading on this site.
All the info you ask has been posted numerous times.
But I'll play nice and post some of it
Compression is 8.35/1
Differences: nodular iron main caps,better headgaskets, lower comp. pistons.
cam is same as same year NA 4.3
yes you could use a 98 block. heads will need to be modded as well as the syty intake for the newer style vortec heads but that is a great improvement.
Pistons will have to be changed or else you will have to run very low boost. Dunno how long the std. mains will hold up either.
It is rumored that the later blocks are weaker as well.
All the info you ask has been posted numerous times.
But I'll play nice and post some of it
Compression is 8.35/1
Differences: nodular iron main caps,better headgaskets, lower comp. pistons.
cam is same as same year NA 4.3
yes you could use a 98 block. heads will need to be modded as well as the syty intake for the newer style vortec heads but that is a great improvement.
Pistons will have to be changed or else you will have to run very low boost. Dunno how long the std. mains will hold up either.
It is rumored that the later blocks are weaker as well.
DanenGraham
Big in the rear
Do some searching, people have said things about the newer blocks with balance shafts.
people say the balance shaft motor is weaker, but i have never personally heard of a syty prepped, balance shaft motor failing...i used one in my recent sy build and it is fine so far...very smooth running i might add....more expensive to build though....i have a stock syty shortblock that i'm thinking of building as a spare for the sy....just in case i'm wrong.... 
jwaller
Evil Genius/SyTy Guru
some said the balance shafts blocks were weaker but I can't believe this anymore. esp if you look at the very latest 4.3 blocks(98 and up). they have reinforinceing ribs down the front deleted the freeze plugs and have more meat where it counts. it seems these blocks are 98 and up(the first balnce shaft blocks were called into question but I have one of these in my sy and it's held up fine...only has 50 miles on it).
I like um but havent built one for a syty yet. all these ppl keep sending me stock syty blocks to build.
I like um but havent built one for a syty yet. all these ppl keep sending me stock syty blocks to build.
supersports10
New member
here ya go you should read this
http://www.syty.net/phpBB2/viewtopic.php?t=38177&highlight=
and jwaller....looks like your first balance shaft motor might be coming downyour way for a build this spring if the taxes come back like i hope they are.
http://www.syty.net/phpBB2/viewtopic.php?t=38177&highlight=
and jwaller....looks like your first balance shaft motor might be coming downyour way for a build this spring if the taxes come back like i hope they are.