ZQ8LS1

iTrader: (3)

I am building a 5.3 aluminum block with flat top pistons...will the LS1 (853) heads be a good combo for a stock daily driver ???

I can get a good set for $100.

wildcamaro

iTrader: (15)

Do you have the stock 799 heads? They are better...with the ls1 heads you will lose a lil bit of compression..you would go from 9.9:1 to like 9.7-9.75:1 compression...you can get ls1 stock heads for under 100 bucks all day on parts classified...but a 100 for nice clean heads aint bad at all.

garygnu

you should get 853 heads for free,unless there are rebuilt.you can get some used 243/799 heads for $400,worth 15 more hp.do a good valve job and get some good springs.look at TSP for heads ,parts ,and a cam.

ZQ8LS1

iTrader: (3)

No I dont,I bought the bottom end & building a motor. Not looking for all out power,just a daily driver with better power than a 4.3.

Trying to keep the price down so I can get this thing in (S10) & peps are getting $400 plus for the 799's.

So the LS1's will work ??

Thanx for your input .

mcfarlnd

iTrader: (15)

Wouldn't be my head choice, they will work though. Get the 706 heads or the 863 heads that came on the lm7 and 4.8s. They will put you in the 10.4:1 range.

wildcamaro

iTrader: (15)

Yea def I would go with the 5.3 heads before ls1 heads because these engines like compression...but the 853s you speak of will work just fine...

ZQ8LS1

iTrader: (3)

Thanx guys,just looking to get this running & found a set of 853 heads for $100 shipped.

Once I get it in then I will work on the performance end,its costing a lot to get it in as is so just looking to keep the cost down.

What head gasket would I use ?? 5.3 or 5.7 or are they the same ?? I might even bore it to 5.7.....

wildcamaro

iTrader: (15)

You will have to use a 5.7 head gasket with the ls1 heads...l33 originally used 5.7 head gaskets stock as well

ZQ8LS1

iTrader: (3)

Thanx for your input !!