so my 94 firebird has an LT4 hotcam rebuilt

the crank was replaced and the pistons are forged...

guy who built the motor said it'll last all day at 10 psi...

any ideas?

 

Gotta give more details than that. Compression? Fuel system?

 

guess i gotta ask more questions from the performance shop...

 

If it wasn't a specific request for low compression, your best luck will land you in the stock compression range. Bad luck could put you much higher with flat tops, stock heads, decked block and milled heads.

If its stock range I would probably run it 8-10 with good fuel, but that would be pushing your luck.

 

yea i never mentioned compression when i had the work done...

all i originally wanted done was an lt4 kit.. hotcam

then he pulled it apart and was wondering why it worked due to the crank's condition seeing that it was burnt

so i had him stroke it after seeing the need for the new crank

unless the crank changes the compression, i think i'm the lt4 compression which is 11.1 isnt it?

 

crank, pistons, heads all go into it.... so its best to check. At least find out what pistons are in it.

So you did the whole lt4 kit? Heads, intake, etc?

 

yep