Low Compression Pistons(10.1)...

teal89 · March 8th, 2008, 01:29 AM

Anyone know where I can get some pistons for my 89 lx that has a 10.1 or even 11.1 ratio?

e3sean · March 8th, 2008, 01:34 AM

11:1 is high compression for a mustang...

teal89 · March 8th, 2008, 01:44 AM

oh ok well Does anyone know where I can get some pistons within the range of 10.1 - 12.1?

JBIGBOOTSY · March 8th, 2008, 02:26 AM

I dont think anyone makes one thats very high. 0decking, milling heads, and thinner head gaskets will help tho.

87 5.0 · March 8th, 2008, 02:27 AM

Originally Posted by teal89

oh ok well Does anyone know where I can get some pistons within the range of 10.1 - 12.1?

summit,jegs,probe local speed shop can order you some.

1slo5.0 · March 8th, 2008, 07:19 AM

Originally Posted by teal89

oh ok well Does anyone know where I can get some pistons within the range of 10.1 - 12.1?

Why?

87 5.0 · March 8th, 2008, 01:11 PM

Originally Posted by Darrell

Why?

I agree also.

Why/?

vfast · March 8th, 2008, 07:07 PM

really your only talking about 20hp at the most and a bunch of gas head aches

ryans88gt · March 8th, 2008, 09:13 PM

A piston by itself doesn't have a compression ratio

acmillr · March 8th, 2008, 09:14 PM

Diamond sells a wide variety..

teal89 · March 9th, 2008, 12:12 AM

Gas headaches are no problem, this will be going into a street/bracket car.

My main thing for the 460 is some JE Pistons, scat crank and rods, Hooker fenderwell exit headers, already have a cam, and plan on stomping some ass all over the place here in a couple months when it warms up. Looking for the ratio around 10.1-11.5 or even 12.1 because I plan on serious advanced timing and n/a so just curious if there's any out there. I work mostly on small blocks and have made serious power from them being carb'd so this seriously is the first big block by Ford I've ever owned.

teal89 · March 9th, 2008, 12:23 AM

Hell as a matter of fact, on the 89 lx heads, how good will it do if I to a good port job on them? Or maybe find some gt-40x or p or just gt40 heads and port them to hell on the exhaust side and ever so slightly on the intake side (I don't want to load up at a light)

1slo5.0 · March 9th, 2008, 11:13 AM

Originally Posted by teal89

Gas headaches are no problem, this will be going into a street/bracket car.

My main thing for the 460 is some JE Pistons, scat crank and rods, Hooker fenderwell exit headers, already have a cam, and plan on stomping some ass all over the place here in a couple months when it warms up. Looking for the ratio around 10.1-11.5 or even 12.1 because I plan on serious advanced timing and n/a so just curious if there's any out there. I work mostly on small blocks and have made serious power from them being carb'd so this seriously is the first big block by Ford I've ever owned.

You don't "seriously advance timing" with high compression. You need to focus on the entire combination, not just compression. How much horsepower do you want to make? What heads are you going to use?

Originally Posted by teal89

Hell as a matter of fact, on the 89 lx heads, how good will it do if I to a good port job on them? Or maybe find some gt-40x or p or just gt40 heads and port them to hell on the exhaust side and ever so slightly on the intake side (I don't want to load up at a light)

This doesn't make any sense to me. You are talking about building a 460 and now you are talking about using the stock 89LX heads on it????

Loading up at a light has nothing to do with porting or heads.

teal89 · March 10th, 2008, 12:41 AM

^ well was more of a second hand question because I can go cheaper spending by boring my current 5.0 heads and block. Maybe the block .30 or .40 over and some JE Pistions or Keith Black pistons. So Ignore the 460, that's on the back burner. My current block(5.0) is what I'd like to start with. I plan to use my current heads and want to port them out on the exhaust side, and slightly port them on the intake side. I have harland sharps for the heads as well along wit hthe studs and everything. The block I'd like to go .40 over and If you look on the thread "Cams", you will see the cam I am getting. Staying Fuel Injection, have a 70mm TB from summit. Pushing for 400hp n/a. Oh and I also have some 24lb jectors a friend will give me once I get the build under way.

1slo5.0 · March 10th, 2008, 10:48 AM

Originally Posted by teal89

^ well was more of a second hand question because I can go cheaper spending by boring my current 5.0 heads and block. Maybe the block .30 or .40 over and some JE Pistions or Keith Black pistons. So Ignore the 460, that's on the back burner. My current block(5.0) is what I'd like to start with. I plan to use my current heads and want to port them out on the exhaust side, and slightly port them on the intake side. I have harland sharps for the heads as well along wit hthe studs and everything. The block I'd like to go .40 over and If you look on the thread "Cams", you will see the cam I am getting. Staying Fuel Injection, have a 70mm TB from summit. Pushing for 400hp n/a. Oh and I also have some 24lb jectors a friend will give me once I get the build under way.

You are not going to make 400hp with the stock heads. You will not need to bore the block unless there is something wrong with the rotating assembly. You will need a good set of heads, cam, intake and other supporting parts like rocker arms, pushrods, etc. Be ready to spend a few thousand dollars.

acmillr · March 10th, 2008, 10:51 AM

teal89,
I gotta ask- What do you consider "high compression"?

Goblin · March 10th, 2008, 01:37 PM

Originally Posted by acmillr

teal89,
I gotta ask- What do you consider "high compression"?

I know your asking me.. but to me, anything above 13.5:1 is starting to get high.

Thats just me though.

acmillr · March 10th, 2008, 01:47 PM

Originally Posted by Goblin

I know your asking me.. but to me, anything above 13.5:1 is starting to get high.

Thats just me though.

I was talking street-wise..... Anyway, just saying that 11:1 is on the high side for a street car. It's plenty doable, but I wouldn't classify a 10:1+ street motor as low comp.

Goblin · March 10th, 2008, 06:02 PM

Originally Posted by acmillr

I was talking street-wise..... Anyway, just saying that 11:1 is on the high side for a street car. It's plenty doable, but I wouldn't classify a 10:1+ street motor as low comp.

I was talking street wise too

Maybe 13.5:1 is slighty exaggerating it a bit. Realistically, 12:1 would be high for a street engine. Anything under that is a matter of opinion, and whatever the owner wants to deal with.

jam77 · March 10th, 2008, 06:56 PM

Can you even run pump gas at 11-1 ? I always thought 10-1 was about max for 93 octane.

March 8th, 2008, 01:29 AM	#1
teal89 Enthusiast 89 Mustang Lx Join Date: Feb 2008 Location: Rockwall, Texas Posts: 527 iTrader: 0 reviews	Low Compression Pistons(10.1)... Anyone know where I can get some pistons for my 89 lx that has a 10.1 or even 11.1 ratio? __________________ 94-95 306, B-Cam, Off-brand BBK Like Headers, H-Pipe, 3.73's, Nitrous Wet Shot 175 Shot

March 8th, 2008, 01:34 AM	#2
e3sean I Post Entirely Way Too Much 1988 lx 9.68@142 Join Date: Nov 2007 Location: goldsboro NC Posts: 5,609 iTrader: 0 reviews	11:1 is high compression for a mustang... __________________

March 8th, 2008, 01:44 AM	#3
teal89 Enthusiast 89 Mustang Lx Join Date: Feb 2008 Location: Rockwall, Texas Posts: 527 iTrader: 0 reviews	oh ok well Does anyone know where I can get some pistons within the range of 10.1 - 12.1? __________________ 94-95 306, B-Cam, Off-brand BBK Like Headers, H-Pipe, 3.73's, Nitrous Wet Shot 175 Shot

March 8th, 2008, 07:07 PM	#8
vfast Banned Join Date: Aug 2005 Location: shimmy shack takeout Posts: 1,084 iTrader: 0 reviews	really your only talking about 20hp at the most and a bunch of gas head aches __________________ EVERYONE IS ENTITLED TO MY OPINION:cool: 6'ers are for kids 1965 chevelle SS 421 sbc 6 speed, 3.90 gears,alum d-shaft, brodix heads,roller cam,925 AED carb...grocery getter[COLOR="Red"]RIP[/COLOR]

March 8th, 2008, 09:13 PM	#9
ryans88gt MM Fanatic Join Date: May 2007 Location: Bloomington, IL Posts: 4,737 iTrader: 0 reviews	A piston by itself doesn't have a compression ratio __________________ 88 GT CHI headed 351w 10.8 @ 125 - still figuring it out. 03 Cobra 2.3 whipple 10.7 @ 129 - sold it 04 Mach 1 12.7 @ 109 mostly stock - sold it 89 LX procharged 302 515 hp 497 ftlbs 10.7 @130 mph - sold it

March 8th, 2008, 02:26 AM	#4
JBIGBOOTSY MM Fanatic 1990 LX hatch Join Date: Aug 2006 Location: Hobart Indiana Posts: 4,391 iTrader: 0 reviews	I dont think anyone makes one thats very high. 0decking, milling heads, and thinner head gaskets will help tho.

March 8th, 2008, 09:14 PM	#10
acmillr MM's Mad Scientist Slow Fella Join Date: Jul 2006 Location: Tupelo, MS Posts: 5,111 iTrader: 2 reviews	Diamond sells a wide variety.. __________________

March 9th, 2008, 12:12 AM	#11
teal89 Enthusiast 89 Mustang Lx Join Date: Feb 2008 Location: Rockwall, Texas Posts: 527 iTrader: 0 reviews	Gas headaches are no problem, this will be going into a street/bracket car. My main thing for the 460 is some JE Pistons, scat crank and rods, Hooker fenderwell exit headers, already have a cam, and plan on stomping some ass all over the place here in a couple months when it warms up. Looking for the ratio around 10.1-11.5 or even 12.1 because I plan on serious advanced timing and n/a so just curious if there's any out there. I work mostly on small blocks and have made serious power from them being carb'd so this seriously is the first big block by Ford I've ever owned. __________________ 94-95 306, B-Cam, Off-brand BBK Like Headers, H-Pipe, 3.73's, Nitrous Wet Shot 175 Shot Last edited by teal89; March 9th, 2008 at 12:15 AM.

March 9th, 2008, 12:23 AM	#12
teal89 Enthusiast 89 Mustang Lx Join Date: Feb 2008 Location: Rockwall, Texas Posts: 527 iTrader: 0 reviews	Hell as a matter of fact, on the 89 lx heads, how good will it do if I to a good port job on them? Or maybe find some gt-40x or p or just gt40 heads and port them to hell on the exhaust side and ever so slightly on the intake side (I don't want to load up at a light) __________________ 94-95 306, B-Cam, Off-brand BBK Like Headers, H-Pipe, 3.73's, Nitrous Wet Shot 175 Shot

March 10th, 2008, 12:41 AM	#14
teal89 Enthusiast 89 Mustang Lx Join Date: Feb 2008 Location: Rockwall, Texas Posts: 527 iTrader: 0 reviews	^ well was more of a second hand question because I can go cheaper spending by boring my current 5.0 heads and block. Maybe the block .30 or .40 over and some JE Pistions or Keith Black pistons. So Ignore the 460, that's on the back burner. My current block(5.0) is what I'd like to start with. I plan to use my current heads and want to port them out on the exhaust side, and slightly port them on the intake side. I have harland sharps for the heads as well along wit hthe studs and everything. The block I'd like to go .40 over and If you look on the thread "Cams", you will see the cam I am getting. Staying Fuel Injection, have a 70mm TB from summit. Pushing for 400hp n/a. Oh and I also have some 24lb jectors a friend will give me once I get the build under way. __________________ 94-95 306, B-Cam, Off-brand BBK Like Headers, H-Pipe, 3.73's, Nitrous Wet Shot 175 Shot

March 10th, 2008, 10:51 AM	#16
acmillr MM's Mad Scientist Slow Fella Join Date: Jul 2006 Location: Tupelo, MS Posts: 5,111 iTrader: 2 reviews	teal89, I gotta ask- What do you consider "high compression"? __________________

March 10th, 2008, 06:56 PM	#20
jam77 Enthusiast 1987 Mustang GT Join Date: Apr 2007 Location: IL Posts: 685 iTrader: 0 reviews	Can you even run pump gas at 11-1 ? I always thought 10-1 was about max for 93 octane. __________________ 87 GT, typhoon upper and lower,70mm tb, 90mm maf, bbk shorties, bbk x-pipe, flowmaster cat back, 3:73 gear, pro 5.0 shifter, novi blower,afm power pipe, load IO, Trick Flow heads, Anderson B-31 cam, Anderson PMS, 42 lb injectors, t-rex fuel pump.

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