Casting Numbers E6SC head/JY block
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Joined: May 2003
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From: south louisiana
What exactly do you want to know? E6SE heads were std equipment on 86 HO 5.0's, and 86-91 Crown Vic, Lincoln Town Car and Merc Marquis 5.0's. I think some 351's those years may have ended up with em too.
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From: Boise, Idaho
Originally Posted by 1979Mustang
Those were the worst flowing heads Ford ever made. I would go and get a set of E7TE heads which came out in 1987 and were used on all trucks and the Mustang's as well.
There was a recent discussion about E6TE heads, including a picture. Those looked real good to me as well. It depends on what you're trying to build, but I would never use E7TE heads. And you can get F7TE's for a good price. Those kick butt.
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From: south louisiana
Originally Posted by pcmenten
LOL. How much flow do you need on a 302? If I had both E7TE and E6SE heads, I'd use the E6SE heads.
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From: Boise, Idaho
Originally Posted by baddad457
Stock head to stock head the E7's make 25 more horses than E6's. Now, which one flows more air?
So, no, the E7TE heads don't get you anywhere near 25 hp over the E6SE heads. I'll bet if you drove two cars with everything else the same except the heads, you'd go for the better torque of the E6SE heads.
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From: south louisiana
So you're saying Ford was wrong in their stating that the E7's make 25 more horses than the E6's? I didn't make this assumption Ford did. The intake valves are shrouded so bad on the E6 heads, that they'd never flow what other small block heads do. The E6 heads made more bottom end torque, but that's where their advantage ends. Ford used them on the std passenger cars in the line up because of this and these applications rarely see over 3000 rpms.
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Joined: May 2003
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From: south louisiana
And I have tried an E6 headed 5.0 in my Ranger and it was sorely lacking in power over what E7's make. I took a stock 88 Crown Vic 5.0. carbed it with a Performer RPM intake, a std 1850 Holley 600 and bumped the "base" roller cam with 1.7 rockers. All this and other than smoothing the sharp edges on the E6 heads, plus removing the Thermactor bumps from the exhaust, still netted not much. With a C-4 trans and a 3.08 rear, the Ranger could only manage 16 second 1/4's.
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Joined: Jan 2006
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From: Westland, Michigan
Originally Posted by baddad457
So you're saying Ford was wrong in their stating that the E7's make 25 more horses than the E6's? I didn't make this assumption Ford did. The intake valves are shrouded so bad on the E6 heads, that they'd never flow what other small block heads do. The E6 heads made more bottom end torque, but that's where their advantage ends. Ford used them on the std passenger cars in the line up because of this and these applications rarely see over 3000 rpms.
Last edited by 1979Mustang; Jan 2, 2007 at 06:27 PM.
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From: Maple Valley, WA
Originally Posted by pcmenten
LOL. How much flow do you need on a 302? If I had both E7TE and E6SE heads, I'd use the E6SE heads.
There was a recent discussion about E6TE heads, including a picture. Those looked real good to me as well. It depends on what you're trying to build, but I would never use E7TE heads. And you can get F7TE's for a good price. Those kick butt.
There was a recent discussion about E6TE heads, including a picture. Those looked real good to me as well. It depends on what you're trying to build, but I would never use E7TE heads. And you can get F7TE's for a good price. Those kick butt.
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From: south louisiana
Originally Posted by 1979Mustang
Years ago I had put a 302 in my 1979 Mustang which was a 302 out of a 1986 Mustang GT. I ripped off the EFI and put on a 750 Holley DP with a Performer 289 intake manifold. The car went 14:30's all day long. Wanted to step up without breaking the bank and went and swapped out the E6 heads for the E7 heads. Just the head swap alone got the car to run 13:80's.
I ran a 650 DP that I had removed the choke tower from and blended the throats and then went to a vac. 600. There was a noticeable improvement with the 600 in accelleration. The 650 was too much, too soon. This was on a 5.0 with the same specs as the Explorer 5.0, but with ported E7's in place of the GT40P's.
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