Re: Milling and big block cylinder heads...
[Re: JohnRR]
#341081
06/08/09 12:08 AM
06/08/09 12:08 AM
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Joined: Aug 2007
Posts: 6,109 Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,109
Valencia, España
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i think that the 906, 346, 452 heads are all about 86-88 CCs aren't they? i had never heard 81.5
I went and checked a half dozen sites, all were 81.5 cc for the 902 heads....
3769902 1974 440 400 2.08" 1.74" 81.5cc
http://www.motortopia.com/forums/viewtop.../tp/1#post_3902
they list the 906 at 79.5cc , thats the NHRA blueprint spec . measure what you ACTUALLY have , do not believe everything you read ...
thats what made me choose some stuff "wrong"
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: Milling and big block cylinder heads...
[Re: NachoRT74]
#341084
06/08/09 12:12 AM
06/08/09 12:12 AM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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i think that the 906, 346, 452 heads are all about 86-88 CCs aren't they? i had never heard 81.5
I went and checked a half dozen sites, all were 81.5 cc for the 902 heads....
3769902 1974 440 400 2.08" 1.74" 81.5cc
http://www.motortopia.com/forums/viewtop.../tp/1#post_3902
they list the 906 at 79.5cc , thats the NHRA blueprint spec . measure what you ACTUALLY have , do not believe everything you read ...
thats what made me choose some stuff "wrong"
Exactly, you believe what Chrysler put out not what some guy on Moparts with a negative outlook posts... Just cause he was right shouldn't have any bearing... Till you realise the reason he is so negative is he's BTDT & already paid those dues...
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Re: Milling and big block cylinder heads...
[Re: CrAzYMoPaRGuY]
#341086
06/08/09 12:20 AM
06/08/09 12:20 AM
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Joined: Jul 2008
Posts: 403 NE Ohio
JG71B
mopar
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mopar
Joined: Jul 2008
Posts: 403
NE Ohio
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"Exactly, you believe what Chrysler put out not what some guy on Moparts with a negative outlook posts... Just cause he was right shouldn't have any bearing... Till you realise the reason he is so negative is he's BTDT & already paid those dues... " well put!
FJ6 '71 Charger SE 383HP
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Re: Milling and big block cylinder heads...
[Re: CrAzYMoPaRGuY]
#341092
06/08/09 12:53 AM
06/08/09 12:53 AM
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Joined: Jan 2003
Posts: 75,280 A gulag near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,280
A gulag near you.
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"Exactly, you believe what Chrysler put out not what some guy on Moparts with a negative outlook posts... Just cause he was right shouldn't have any bearing... Till you realise the reason he is so negative is he's BTDT & already paid those dues... "
well put!
It would be interesting to tear down a Mopar, Ford and GM engine from the late 60's and see just how far off EVERYTHING printed in literature was back then, heads ccs, compression ratios, rocker ratios, horsepower outputs etc etc....
I have , the 56K original mile 383 HP in my dart , it still has shim head gaskets with part number begining with 18 part number , the pistons are if i remember right .006 in the hole , should be .003 , I haven't cc'd a head yet ...
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Re: Milling and big block cylinder heads...
[Re: NachoRT74]
#341093
06/08/09 01:00 AM
06/08/09 01:00 AM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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Till you realise the reason he is so negative is he's BTDT & already paid those dues...
whats BTDT ?
I don't get every abreviation yet!!!
Been There.. Done That...
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Re: Milling and big block cylinder heads...
[Re: JohnRR]
#341094
06/08/09 01:04 AM
06/08/09 01:04 AM
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Joined: Jan 2004
Posts: 27,347 Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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I have , the 56K original mile 383 HP in my dart , it still has shim head gaskets with part number begining with 18 part number , the pistons are if i remember right .006 in the hole , should be .003 , I haven't cc'd a head yet ...
So you'll telling me they only missed by .003... That would be exceptionally close to spec... Are you sure you didn't add a zero??? Cause .030 wouldn't really surprise me... .080 wouldn't eiither...
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Re: Milling and big block cylinder heads...
[Re: 1_WILD_RT]
#341096
06/08/09 09:00 AM
06/08/09 09:00 AM
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Joined: Jan 2003
Posts: 75,280 A gulag near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,280
A gulag near you.
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I have , the 56K original mile 383 HP in my dart , it still has shim head gaskets with part number begining with 18 part number , the pistons are if i remember right .006 in the hole , should be .003 , I haven't cc'd a head yet ...
So you'll telling me they only missed by .003... That would be exceptionally close to spec... Are you sure you didn't add a zero??? Cause .030 wouldn't really surprise me... .080 wouldn't eiither...
nope it's that close , I keep hearing of these MYTHICAL blocks that are .020 or MORE than factory spec but I haven't come across one yet , maybe I'm just lucky , I have another 69 383 HP I just picked up , rering/rebearing rebuild , original pistons , guess what ...
I put these TALLER than spec blocks right up their with UNICORNS ...
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