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#1
12-23-2019, 01:28 AM
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RA IV 722 CYl Head stampings on the end
[ATTACH]527296[/ATTACH just acquired these cyl heads and was wondering if anyone knows what these stampings on the end mean...Thanks
Last edited by catc; 07-26-2022 at 03:59 PM. |
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#2
12-23-2019, 02:11 AM
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They were massaged by well known Pontiac racer/builder Bob Maxey from Clinton, MD back in the day.
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Just a blind squirrel looking for a nut. |
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#3
12-23-2019, 02:15 AM
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Quote:
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#4
12-23-2019, 10:29 AM
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they are in excellent shape..i was wondering about that ..i remember the car..thought it was a black Astre??.i'm gonna do some research through my old magazines..but i remember that car running very well for the time..
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#5
12-23-2019, 01:50 PM
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Quote:
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1970 Formula 400 Carousel Red paint on Black standard interior A no-engine, no-transmission, no-wheel option car. Quite likely one of few '70 Muncie three speed Formula 400's left. 1991 Grand Am: 14.4 @ 93.7mph (DA corrected) (retired DD, stock appearing) 2009 Cobalt SS: 13.9 @ 103mph (current DD; makes something north of 300hp & 350ft/lbs) |
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#6
12-23-2019, 04:16 PM
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Bob was a friend I had a set of his RAIV 722
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#7
12-23-2019, 04:21 PM
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Quote:
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#8
12-23-2019, 04:41 PM
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Does anybody know his screen name or how i might get a hold of him?any info is greatly appreciated..Thank you all very much!!
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#9
12-23-2019, 05:03 PM
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1977 1/2 or 1978 Phoenix project car with Ram Air IV crate engine
One of the magazines, circa 1978 had a Ram Air IV crate engine in a rwd Phoenix; it was either Car Craft or Hot Rod IIRC.
Have so far been unable to locate a copy and am relying upon 40 year old or so memory. Quote:
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1970 Lucerne Blue Firebird Trans Am, deluxe blue interior. Original Ram Air III, M-21, 3.73. Being built as a 4" stroke "434" with SR 614 Ram Air IV heads 1972+ Lucerne Blue 4-door hardtop "what if" T-41 Le Mans Sport GT/Grand Am concepts. Equipped with future 3" journal "455 HO"/"what if" prototype "SD 455". What if GM had continued production of the 1970-72 GM A body somewhere in the southern hemisphere? |
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#10
12-23-2019, 05:34 PM
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Mike Voycey goes by "potentpontiac" here.
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79 Trans Am WS6 71 Formula 72 Formula 71 Firebird 69 Firebird |
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#11
12-23-2019, 09:56 PM
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Quote:
Last edited by Mark G; 12-23-2019 at 10:11 PM. |
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#12
12-23-2019, 10:25 PM
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RA4 Heads
PM Sent.
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#13
12-24-2019, 08:35 AM
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Heck of a find there.
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Be carefull of the feet you step on today.They may be attached to the a$$ you kiss tomorrow. |
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#14
12-24-2019, 10:18 AM
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Curious how you stumbled on to them? Wonder what they would show on a flow bench.
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72 lemans,455 e-head, UD 255/263 solid flat,3.73 gears,,,10" 4400 converter,, 6.68 at 101.8 mph,,1.44 60 ft.2007 (cam 271/278 roller)9"CC.4.11gear 6.41 at 106.32 mph 1.42 60 ft.(2009) SOLD,SOLD 1970 GTO 455 4 speed #matching,, 3.31 posi.Stock manifolds. # 64 heads.A factory mint tuquoise ,69' judge stripe car. 8.64 @ 87.3 mph on slippery street tires.Bad 2.25 60ft.Owned since 86' |
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#15
12-24-2019, 10:26 AM
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I saw a set he did years ago on the bench. They hit 300 at .600 and went into turbulence before .700. They were bad ass iron heads.
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Be carefull of the feet you step on today.They may be attached to the a$$ you kiss tomorrow. |
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#16
12-25-2019, 12:47 AM
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a friend of mine had them sitting in his garage for the last couple years,...i've known about them ,just never looked at them closely, he didn't want to sell until recently...he told me he got them from Calvin Hill..he says they flow 286 ,but @ what lift???..Mike Voycey got a hold of me and said the S.P. stood for Super Pro,he wasn't sure exactly what the heads were,but said Bob used Brandywine cyl heads for the porting .then assembled them himself....pretty cool racing history..my friend had no idea they use to belong to Bob Maxey.. so ,i'm thinking they could have been on Bob's Astre, they were obviously ported in 1978 and from what i can find i believe Bob had the Astre then..????i don't know if anybody will know exactly...if they were on his car??does anybody know did he do cyl heads for other people back then?
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#17
12-25-2019, 01:11 AM
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All the RAIV heads go into turbulence/tumble at some point past .600 lift. But when you bolt a intake on the head it goes away as per Dan Whittmore.
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#18
12-25-2019, 12:11 PM
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Bob helped a lot of local Racers in the Maryland area. He did do some Chevy stuff but his Expertise was Pontiacs. He ran 8.80's In his Grand Am in the Late 80's. I do know that motor was 458 cubic inch with SD Ported Heads. His car weight was right around 2600lbs. Pretty Impressive stuff back then. His attention to detail was over the top. I still miss our telephone conversations today. Great Guy.
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#19
12-25-2019, 06:52 PM
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Quote:
Calvin Hill Hill Performance 708-250-7420 |
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#20
12-25-2019, 09:37 PM
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curious .what is the max flow you can get out of a cast iron 722 cyl head...286 back in 1978 was pretty strong i'd say....
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