Hey guys,


Well I will make this short. I think I'm just going to buy a new block for my turbo 408, but I am curious of your thoughts on getting an aluminum block vs a iron block.

Is the aluminum block worth the extra dough or no?


Thanks
Kody

 

Depending on how much boost you plan to run, will be a big deciding factor in the block type.. It is only saving you 75 or so lbs..

 

I don't see any more than about 15#'s with a S480 and I should be close if not at my power goal.

 

Aluminum blocks are great for strikers due to their long cylinder walls so they have MUCH better stability at BDC. People have made 1000+rwhp with aluminum blocks with nothing more than pinned mains and studs.

 

I would happy with 800 to the tires. And I am not cutting any corners, so studs and all that are a definite.

 

The 75lb clame is false it's 100-115 lbs I weighed them a couple weeks ago. The iron lq4 block I weighed put 25 lbs on a 2 bolt main big block chevy.

 

aluminum blocks and boost are fine. just take the same precuations you would with an iron block. enjoy the weight savings and boost at the same time, no problem.

 

I'd go aluminum unless you really wanted to save a few bucks and didn't care about the weight.

 

Anyone else know if this is true? I'm hoping it is, I'm looking to build a stock bore LS1 stroker. Sorry to thread jack, I had just never heard of this.

 

My next engine will have a sleeved aluminum block with a BIG bore. Good weight savings and very strong.