Edelbrock Lt1 Heads
02-05-2003, 12:31 PM
#1
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Edelbrock Lt1 Heads
Edelbrock will soon have availible LT1 heads for the 92-97 LT1's. They have 1.94 in 1.55 ex valves, 170cc intake & 60cc exhaust ports, 54cc combustion chamber & made 24 more hp on a stock motor. Also the peal power level was raised by 500 rpm. Hopefully these heads peform as good as they claim. If anyone need more info please ask
02-05-2003, 01:20 PM
#4
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Doesn't sound too exciting honestly, unless they somehow have potential to flow big numbers while not touching the intake runner. Sounds like stock heads with some bowl porting and a half decent valve job.
At least they are doing something though, I spose
At least they are doing something though, I spose
02-05-2003, 02:51 PM
#5
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here are the flow #'s:
.100 61in 52ex
.200 117in 100ex
.300 174in 140ex
.400 220in 167ex
.500 242in 184ex
.600 232in 192ex
these measurements are @28" h20
i am not sure what a stock head flows but i am sure it is not near these #'s. dr mudge are we a little pesimistic? i doubt they are bowl worked/valve jobbed stock heads. why would they do that? it makes no sense.
.100 61in 52ex
.200 117in 100ex
.300 174in 140ex
.400 220in 167ex
.500 242in 184ex
.600 232in 192ex
these measurements are @28" h20
i am not sure what a stock head flows but i am sure it is not near these #'s. dr mudge are we a little pesimistic? i doubt they are bowl worked/valve jobbed stock heads. why would they do that? it makes no sense.
02-05-2003, 03:49 PM
#6
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So may we assume you work for Edelbrock or are a reseller?
Those exhausts are without any sort of pipe/extension? SF-600? 4-4.060 bore or so I assume?
That really isn't any better than a cleaned up stock head... and the cleaned up stock head would have a better E/I ratio. Like mudge said.. not too exciting. If they're like Edelbrock's ford stuff however, they've got plenty of material for someone who knows what they're doing to get nice #'s out of them
Those exhausts are without any sort of pipe/extension? SF-600? 4-4.060 bore or so I assume?
That really isn't any better than a cleaned up stock head... and the cleaned up stock head would have a better E/I ratio. Like mudge said.. not too exciting. If they're like Edelbrock's ford stuff however, they've got plenty of material for someone who knows what they're doing to get nice #'s out of them
02-05-2003, 04:50 PM
#7
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Originally posted by 964MLA
i am not sure what a stock head flows but i am sure it is not near these #'s. dr mudge are we a little pesimistic? i doubt they are bowl worked/valve jobbed stock heads. why would they do that?
i am not sure what a stock head flows but i am sure it is not near these #'s. dr mudge are we a little pesimistic? i doubt they are bowl worked/valve jobbed stock heads. why would they do that?
Those heads flow about like LT4s, not much better than stock. If they are under LT4 price, and have 300+ CFM potential, then there may be a reason to be interested, if they will sell them bare
02-05-2003, 05:23 PM
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02-05-2003, 05:26 PM
#9
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A little "pesimistic"? Yeah, maybe.
I remember when the Turbo 292 small block Chevy heads were it. Everyone was using them and every porter on the planet knew how to get big power from them. Well.... along comes Brodix, Brownfield and a few other head builders with their new and "improved" stuff.
Believe it or not, but it took a while before people started figuring out that these heads had more potential than the ol 292's. It wasn't just flow numbers either. Hell, I've seen heads that flow 5% less than another head and make more power! How is that... well it just goes to show that there's a little more to a cylinder head than how much flow it has at a given lift. Most of the advances in the old days and up til now have come from better combustion chambers, spark plug positioning, squish pad positioning, swirl, bowl depth etc., so let's just wait to see what the little Edelbrock heads can do before casting any stones. Might be surprised and we may not.
-Mindgame
I remember when the Turbo 292 small block Chevy heads were it. Everyone was using them and every porter on the planet knew how to get big power from them. Well.... along comes Brodix, Brownfield and a few other head builders with their new and "improved" stuff.
Believe it or not, but it took a while before people started figuring out that these heads had more potential than the ol 292's. It wasn't just flow numbers either. Hell, I've seen heads that flow 5% less than another head and make more power! How is that... well it just goes to show that there's a little more to a cylinder head than how much flow it has at a given lift. Most of the advances in the old days and up til now have come from better combustion chambers, spark plug positioning, squish pad positioning, swirl, bowl depth etc., so let's just wait to see what the little Edelbrock heads can do before casting any stones. Might be surprised and we may not.
-Mindgame
02-05-2003, 05:36 PM
#10
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part # 61919 bare
part # 61909 complete
dr mudge:i do not know of any aftermarket head that cannot be ported. it does not exist. 300 cfm potential i do not know if possible but my guess would be yes.
skarodom: sf 600 ya right, they have a sf 1020 best of the best
mindgame: you hit the nail on the head. flow #'s are not everything. anyway a pair of heads could by flowed on 2 different flow benches & get 2 different readings
part # 61909 complete
dr mudge:i do not know of any aftermarket head that cannot be ported. it does not exist. 300 cfm potential i do not know if possible but my guess would be yes.
skarodom: sf 600 ya right, they have a sf 1020 best of the best
mindgame: you hit the nail on the head. flow #'s are not everything. anyway a pair of heads could by flowed on 2 different flow benches & get 2 different readings
02-05-2003, 09:45 PM
#13
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Originally posted by 964MLA
dr mudge:i do not know of any aftermarket head that cannot be ported. it does not exist. 300 cfm potential i do not know if possible but my guess would be yes.
dr mudge:i do not know of any aftermarket head that cannot be ported. it does not exist. 300 cfm potential i do not know if possible but my guess would be yes.
02-05-2003, 10:15 PM
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Compression might be 8-10 of it, who knows. Unless the combustion chamber is somehow more efficient, maybe even a different plug location, who knows.
It would be nice to see, and sure, this could be a great head with some work, but need to see prices and pictures to make better guesses
It would be nice to see, and sure, this could be a great head with some work, but need to see prices and pictures to make better guesses
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