cons to higher compression?
Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
cons to higher compression? ok are there any cons to higher compression N/A...like maybe the life expectancy of the motor or anything?
how much power can really be expected going from 10.65:1 with 8.43 dcr to 10.97:1 with 8.68:1 dcr???
the reason im asking is because im debating the worth of going with .o40 gaskets over the factory .052's...my plans are using bone stock 243 heads. if anyone wants to check my math im using a stock bottom end LS1 with a 226/226 .585/.585 112+4 XER cam.
any input? i know i can run on pump gas with .040 without any issues. 93 octane is available. im just curious of the estimated gains vs $$...also stock mls gaskets seem to be more forgiving on install.
how much power can really be expected going from 10.65:1 with 8.43 dcr to 10.97:1 with 8.68:1 dcr???
the reason im asking is because im debating the worth of going with .o40 gaskets over the factory .052's...my plans are using bone stock 243 heads. if anyone wants to check my math im using a stock bottom end LS1 with a 226/226 .585/.585 112+4 XER cam.
any input? i know i can run on pump gas with .040 without any issues. 93 octane is available. im just curious of the estimated gains vs $$...also stock mls gaskets seem to be more forgiving on install.
I am not a math guru when it somes to CR or DCR, but as for gains they will be minimal. I'd guess around 15hp? I think its worth it if you were to do it yourself but I would get the heads ported or get new ones if you are going to really make it worth it. Some people would spend more money than the price of gaskets on mods taht souldn't give as much as this would. to me it breaks down to the job being worth it rather than the price.
I have everything for a cam swap in my car but I am waiting to get heads before I do it. If you are on a tight budget and can only afford to do gaskets and willing to do it yourself, I say go for it. Even though I wouldn't
I have everything for a cam swap in my car but I am waiting to get heads before I do it. If you are on a tight budget and can only afford to do gaskets and willing to do it yourself, I say go for it. Even though I wouldn't
Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
i shoulda left more info. gaskets are definatley in my budget full heads arent. im running 853's now and plan to swap to 243's. ive spent more money on smaller gains(havent we all) so if its worth 10 more torque ill go that route. with trucks its all down low power.
Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
Originally Posted by brad8266
Your hp difference is going to me very minimal Not worth it IMO to just swap gaskets to pick up HP.
i hate working on F-bodies 
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Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
so the general consensus is to go ahead and put in .040 gaskets while i have them off???
and i should be able to run my 7.400 pushrods right? if anyone wants to check my math feel free. this is my first rodeo
and i should be able to run my 7.400 pushrods right? if anyone wants to check my math feel free. this is my first rodeo
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Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
Originally Posted by radkon
For every 1 point increase in compression, you will pick up 3-4% power. On a 400 rwhp engine, going from 10.0:1 to 11.0:1 will give you (theoretically) 12-16 additional rwhp
Originally Posted by TXsilverado
ok im sold. ive spent more money for less gains (asp pulleys, e-fans etc haha)
That would be a lot of work for a 4 hp increase.
Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
Originally Posted by Louie83
You said you were only going from like 10.65 to 10.97.
That would be a lot of work for a 4 hp increase.
That would be a lot of work for a 4 hp increase.
