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Hobbies & Interests
Gearheads
Couldn’t resist. 1965 F100 project
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<blockquote data-quote="swampratt" data-source="post: 4084861" data-attributes="member: 15054"><p>I do not like the MPG of the LS when used as boat/car towing fodder.</p><p>I think the heads are designed around higher HP and atomization and intake runner heat is just not there for low end power and MPG.</p><p></p><p>Best truck engines i have done were 455 Oldsmobiles with J casting heads.</p><p>Since [USER=27098]@TANSTAAFL[/USER] brought it up.</p><p></p><p>Hard to find decent 455's today.</p><p>J castings had small runners 156CC which is like a small SBC runner size.</p><p>I would get 15MPG loaded or unloaded with the Olds 455 in trucks with stock cams.</p><p>Ported heads of course.</p><p></p><p>But those were not 1/4 mile quick.</p><p>Just great stump pullers. </p><p>I think that old Ford needs to be quick and fast as you have a stump puller.</p></blockquote><p></p>
[QUOTE="swampratt, post: 4084861, member: 15054"] I do not like the MPG of the LS when used as boat/car towing fodder. I think the heads are designed around higher HP and atomization and intake runner heat is just not there for low end power and MPG. Best truck engines i have done were 455 Oldsmobiles with J casting heads. Since [USER=27098]@TANSTAAFL[/USER] brought it up. Hard to find decent 455's today. J castings had small runners 156CC which is like a small SBC runner size. I would get 15MPG loaded or unloaded with the Olds 455 in trucks with stock cams. Ported heads of course. But those were not 1/4 mile quick. Just great stump pullers. I think that old Ford needs to be quick and fast as you have a stump puller. [/QUOTE]
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Couldn’t resist. 1965 F100 project
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