First start up after rebuild/no muffler
 

Well I'm almost ready for the first start. I have to do the initial cam break in. My question is is it ok to do this without a muffler. I put on an lce header, pipe and cat. The muffler shop wants it running to do the rest of the exhaust. Or should i find another shop, put it on a trailer, have them do the exhaust then do my first start. Any opinions would be appreciated. I'll be ready after I figure out my vaccuum lines. I'll also post pic's of the build when i figure out how to get them from my phone to the forum. Thanks

Should be fine to crank, will give a chance to test for leaks too.

no reason to worry about running it without a muffler, it's not like these motors are THAT loud. even with an open header... XD
but seriously, they're not that loud at all.

Thank you folks. Waiting for my Joe Gibbs oil and probably do start up on Monday.