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#1
01-14-2003, 07:41 PM
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Could someone please clarify the valve sizes in the 15 heads. I've heard and read conflicting information. Are the 1970 455 heads 2.11 or 1.96?
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#2
01-14-2003, 07:41 PM
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Could someone please clarify the valve sizes in the 15 heads. I've heard and read conflicting information. Are the 1970 455 heads 2.11 or 1.96?
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#3
01-14-2003, 07:57 PM
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go to wallaceracing.com the codes and valve sizes are listed for all pontiac engines and it is easy 2 read.. a tip i got earlier on 400 or 455 query.
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No GTO doesn't mean garbage truck option! |
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#4
01-14-2003, 08:01 PM
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I have a pair of 1968 #15 heads.The valves are 1.91 Intake 1.61 Exhaust.
Charlie
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Charlie |
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#5
01-14-2003, 08:07 PM
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I just took a 70 455 apart that came out of a big car. The heads were 15's with small valves and pressed in studs. I think they are 90cc, but never cc'ed them. If anyone wants I could cc them to put the 15 head question to rest.
Mike S |
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#6
01-14-2003, 08:33 PM
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OK WallaceRacing says 1.96 intake. PDude's chart says 2.11 The small valve seems to be the general concensus however.
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#7
01-15-2003, 05:24 PM
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I also have a set off a '70 455. 1.96"/1.66"
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---------------------------- '72 Formula 400 Lucerne Blue, Blue Deluxe interior - My first car! '73 Firebird 350/4-speed Black on Black, mix & match. |
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#8
01-15-2003, 08:45 PM
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Mine are the same, small valves. Strange how Pontiac only rated the big valve #64s 10 hp more??
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Skip Fix 1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever! 1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand 1965 GTO 4 barrel 3 speed project 2004 GTO Pulse Red stock motor computer tune 13.43@103.4 1964 Impala SS 409/470ci 600 HP stroker project 1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs |
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