does milling heads help upstairs or down low?

LX XLR8R · 01-31-2001, 10:08 AM

just wondering if i should mill my heads for a bronco..i can get it done for faily cheap

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1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..

70stang · 01-31-2001, 04:11 PM

Milling heads will increase compression which increases HP and Torque. The cam determines at what rpm.

LX XLR8R · 01-31-2001, 04:26 PM

hmm..the only other thing i was concerned about is rasing the compression 2 high plus low rpm strain will increase the chances for detonation..what a 10.5:1 be unreasonable for a bronco..my concern is that that is cheap easy power while i got it apart but i dont want it pinging under load..also rember i dont want to be putting anyting higher than 89 in this gas guzzling beast

------------------
1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..

jonnyk · 02-01-2001, 12:12 AM

10.5:1 is pretty high for a motor with iron heads, especially on only 89 octane. With iron heads I'd strive for 9.5:1 compression, and aluminums you'd be able to run closer to 10.5:1. Running premium gas would still be a good idea.

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1991 LX Hatch 5.0L

LX XLR8R · 02-01-2001, 12:10 PM

ah..94 only goes in my stang..my wallet cant alow it for the bronco to run it also

------------------
1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..

01-31-2001, 10:08 AM	#1
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	does milling heads help upstairs or down low? just wondering if i should mill my heads for a bronco..i can get it done for faily cheap ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..

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01-31-2001, 04:11 PM	#2
70stang Registered Member Join Date: Dec 2000 Location: Twelve Mile, IN USA 46988 Posts: 17	Milling heads will increase compression which increases HP and Torque. The cam determines at what rpm.

01-31-2001, 04:26 PM	#3
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	hmm..the only other thing i was concerned about is rasing the compression 2 high plus low rpm strain will increase the chances for detonation..what a 10.5:1 be unreasonable for a bronco..my concern is that that is cheap easy power while i got it apart but i dont want it pinging under load..also rember i dont want to be putting anyting higher than 89 in this gas guzzling beast ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..

02-01-2001, 12:12 AM	#4
jonnyk Being stroked is great Join Date: Oct 1998 Location: Alberta, Canada Posts: 772	10.5:1 is pretty high for a motor with iron heads, especially on only 89 octane. With iron heads I'd strive for 9.5:1 compression, and aluminums you'd be able to run closer to 10.5:1. Running premium gas would still be a good idea. ------------------ 1991 LX Hatch 5.0L

02-01-2001, 12:10 PM	#5
LX XLR8R Dirk Diggler Join Date: Feb 1999 Location: SLOATSBURG, NY Posts: 1,931	ah..94 only goes in my stang..my wallet cant alow it for the bronco to run it also ------------------ 1987 black notch(ex 4 banger) DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..