lt1 maximun chamber cc's ??
#1
lt1 maximun chamber cc's ??
Tried searching but search didn't turn up anything. I'm stroking a lt1 to 383 and would like to open up the chamber some to lower the compression ratio. What is the largest that this chamber can be opened up safely ??
#3
Re: lt1 maximun chamber cc's ??
On this particular motor I am using -12.5 cc dish pistons and I am planning to deck the block so i have about .038 piston to head clearance. According to my calculations that will put me right at 11 cr. and I wanted to back it down a little to about 10.5 cr. Also I recently picked up a 400 and I was thinking of doing the conversion of the lt1 head which involves welding up the 4 corner holes so it can be used on a gen 1 block . Check out lt1.com for all the details. lt1 heads and intakes are going for dirt cheap but I would need a way to back down the cr on the 400 also. I know this is probably a little more work but I dont mind . http://web.camaross.com/forums/images/smilies/smile.gif
#7
Re: lt1 maximun chamber cc's ??
Originally Posted by 89gmc
On this particular motor I am using -12.5 cc dish pistons and I am planning to deck the block so i have about .038 piston to head clearance. According to my calculations that will put me right at 11 cr. and I wanted to back it down a little to about 10.5 cr. Also I recently picked up a 400 and I was thinking of doing the conversion of the lt1 head which involves welding up the 4 corner holes so it can be used on a gen 1 block . Check out lt1.com for all the details. lt1 heads and intakes are going for dirt cheap but I would need a way to back down the cr on the 400 also. I know this is probably a little more work but I dont mind . http://web.camaross.com/forums/images/smilies/smile.gif
Ya back it down much more than 11-1 and it will run like a t***. Your cam will tell ya what compression to run to get your DCR in the 8.5-9.0 range.
But it's your engine.
#8
Re: lt1 maximun chamber cc's ??
Originally Posted by SStrokerAce
I thought we mentioned some of these things on that other board!!!!
Don't lower it past 11:1!
Don't lower it past 11:1!
If staying NA then I have to agree keep the compression up.
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01-13-2015 09:19 PM