The original Boss 302 intakes also work with 4bbl. Cleveland heads.1320stang said:It's said you'll need some different stepped headbolts or stepped washers as the 351w diameter is bigger than the 289/302 size. I believe all aftermarket heads have the 351w sized holes as well. That being said, I ran '69 351w heads on a 289 without the stepped bolts of washers just fine.
The Cleveland heads will work, but you have to perform some water port modifications and run a special intake. B&A used to make the intake, but I think they're out of business now, although I think someone else was making them now, they had two intakes, a StreetBoss and a TrackBoss intake.
1320stang said:The Cleveland heads will work, but you have to perform some water port modifications and run a special intake. B&A used to make the intake, but I think they're out of business now, although I think someone else was making them now, they had two intakes, a StreetBoss and a TrackBoss intake.
1320stang said:We're not saying it's not expensive, but the Cleveland style heads will make more power than a Windsor style head. Nascar uses them, the Outlaw guys use them.
68stangman said:The only heads I remember reading about that would give a benefit is a '69 or '70 351 head. The valves are somewhat larger. Intake is 1.84 versus 1.78, and exhaust is 1.54 over 1.46
They were great back then because they looked just like a 302 head, and your oponent could not tell your engine was better breathing. There were very limited aftermarket options back then. That head swap was about as good as you could get for the money.
Today, it would still be an upgrade, however, there is an aftermarket out there with better options. If I had the 351 heads already in hand, I would be inclined to use them. I would definately have them worked on. At least a three angle valve job and hardened seats (unleaded gas). I would also want bronze valve guides.
If I didn't already have them, I would not seek them out.
I'd just rather go aftermarket or rework E7's and have the 1.9/1.6 valves installed.
My .02
Max Power said:More horsepower, sure, but not necessarily more torque. Both of those racing series spend their time in an RPM band that isn't used on the street.
E7 is short for the E7TE heads, which all Stang 6.0's came with from 87-95. Also were used on the pickup & van 5.0 and 5.8 from 87-97. And ditto for the Lincoln Mark VII's from 87-91 (or whenever the VII was replaced by the VIII). Aftermarket heads is personal choice, but for the street on 289's 302's and 331's, those having no larger than 1.94 valved intakes will work fine. 2.02's are really overkill and you also run the risk of valve relief interference wit many pistons, due to the reliefs being too small. There are so many choices out there now it's up to you. I went with Canfield's due to the deal I got on them ($1100 shipped, bought em on ebay) and I couldn't have made a better choice. Mine are the 1.95 valved heads that are the equivalent of AFR165's.bad68coupe said:What are E7's and what aftermarket would ya'll recomend if i plan on having my cam have .533 Intake and Exhaust lift, a lobe seperation of 110 and 224 @ .50 (The Comp Cams 248HR)
If you're asking about the Canfields I have, they were 64 cc heads, now they're 57cc after a .060 milling.bad68coupe said:how big are your chambers?
68stangman said:The only heads I remember reading about that would give a benefit is a '69 or '70 351 head. The valves are somewhat larger. Intake is 1.84 versus 1.78, and exhaust is 1.54 over 1.46
They were great back then because they looked just like a 302 head, and your oponent could not tell your engine was better breathing. There were very limited aftermarket options back then. That head swap was about as good as you could get for the money.
Today, it would still be an upgrade, however, there is an aftermarket out there with better options. If I had the 351 heads already in hand, I would be inclined to use them. I would definately have them worked on. At least a three angle valve job and hardened seats (unleaded gas). I would also want bronze valve guides.
If I didn't already have them, I would not seek them out.
I'd just rather go aftermarket or rework E7's and have the 1.9/1.6 valves installed.
My .02
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