GM crate LS7 454 specs & price
 

I am going to look at a supposedly NEW in the crate GM LS7 454 motor that was purchased from GM in the 1990's.... Can any tell me the specs and casting dates of the block and heads that I should look for on this motor?
.... also what is a ballpark price that would be reasonable to pay ...if it is what he says it is?

thanks guys... [img]<<GRAEMLIN_URL>>/youguysrock.gif[/img]

Re: GM crate LS7 454 specs & price
 

Likely a 445 casting for the block 990 on the heads...and an XCH stamped on the front of the block above the timing chain...guessing they go for ~$4k-$5k

Re: GM crate LS7 454 specs & price
 

...check that...or 188 casting heads...

Re: GM crate LS7 454 specs & price
 

.... would it have aluminum heads?

I think that is what is on it [img]<<GRAEMLIN_URL>>/dunno.gif[/img]

Re: GM crate LS7 454 specs & price
 

No. It would have cast iron heads.

Re: GM crate LS7 454 specs & price
 

.... I will get the dates and casting numbers.... thanks [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]

Re: GM crate LS7 454 specs & price
 

A member here (cranberry70ssl34) has been trying to sell a crate ls7 for years on this site. He wants $10,000. Latest for sale in parts section is 11/13/13 if you want to look at the ad.

Re: GM crate LS7 454 specs & price
 

I noticed 4-5 over the last few years up for sale but no one is taking them at the 7.5-13k price point they been asking. Local guy has one for the last 10 years at $7500 that is sitting in an speed shop that builds drag car motors and even there, no one bites on it. I been tempted many times to buy that one as its one of the ones from the late 70's from what I been told.

Re: GM crate LS7 454 specs & price
 

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Smokey</div><div class="ubbcode-body">I noticed 4-5 over the last few years up for sale but no one is taking them at the 7.5-13k price point they been asking. Local guy has one for the last 10 years at $7500 that is sitting in an speed shop that builds drag car motors and even there, no one bites on it. I been tempted many times to buy that one as its one of the ones from the late 70's from what I been told. </div></div>i think the one I spoke about is from 1973!

Re: GM crate LS7 454 specs & price
 

The LS7 motors were really something...lots of guys used them back in the day as an instant 11 to 10 second bolt on[img]<<GRAEMLIN_URL>>/3gears.gif[/img]

I would look at what it would cost to gather the correct parts and build from scratch...then compare that to the asking price. If you buy a never run motor...you still may want to check things out before turning the key [img]<<GRAEMLIN_URL>>/hmmm.gif[/img]

***Chevy specs called for aluminum heads initially on these motors...I believe all the over the counter versions had iron heads. This was basically a larger displacement L-88 with a better cam. It had to make way north of 500hp...40 years later and we are still talking about them...good stuff never goes out of style [img]<<GRAEMLIN_URL>>/biggthumpup.gif[/img]