heads

I need to know what heads went on the 400 HO engine. I know the 670's did and i have heard the Ram Air III # 48's were almost identical can anybody help me on this also what is everybodies opinion on the 14,15,16,62 casting heads i believe they are the 335 hp heads but im not sure. Any help would be greatly appreciated. I own a 67 hardtop with 4 speed and it originally came with the HO in it and i would like to get something similar back into it. Thanks for your time sincerely Lance

in 1967 all gtos came with the #670,9788067 except for 2 bbl
this was also there first design very late they switchd to #997 9783657
2nd design of the same head ram air I.
in 68&69 the standard 4 bbl used #16 9790118 for hydromatic.and are only HO not ram air, also was used as standard head for all 4 bbl intakes 2 bbl intakes used #9792266.and went over to 1969 for manual tranny#48 9795043.Ram airIII heads 325 hp 2.11 intake 1.77 exh,same as #16 head.looks alot alike but 48 heads exh ports carry out farther w oval port's.
#15 head 290 hp to 340 hp is a big car bon,cat,etc etc 1.91/1.61 10.5 comp.ratio and seen used on fire birds tempest etc etc,
#14 are 265 hp 1.91.intake.1.61 exh 8.6 Comp, ratio
#16/216/62 350 hp 2.11/1.77 72 to 75 cc chamber
#16/62 335/350/360 hp heads same years as above 2.11 intake 1.77 exh. 72-75 cc chamber.
#31/37 are ram air I heads 335/360 hp RamAir 2.22/1.77 72 cc chamber
R/96/A RA II 340 hp for firebird 366 hp for gto 2.11 int/1.77 exh 72 cc chamber
#48 ,9799496 .325 hp 2.11/1.77 72cc,
#722 ram airIV 2.11/177 72 cc. #12 9799496.manual ram air III 330 hp same head as sister
#13,9799497. head used for hydromatic 330 hp 2.11/1.77 72 cc
#64 9799362 heads are 400 heads and 455 heads
# 44 ramairV 375 hp tunnel port exhaust RAV they were used on gto firebird RA options
Travis williams #EdWilliams Machine



travis williams

Travis has most of the numbers for you. If you go to www.wallaceracing.com you can do a head search. All the heads are listed, and as far as I know, are correct. Also, you may want to purchase a Pontiac Restoration book for head and other information when trying to match up parts correctly. ebay is a good source for parts but be careful on how you buy, check out the buyers history. If I see more than one negative feedback, I avoid them. I've purchased an extremely good set of #670 heads for around $250 plus shipping. I spent a bunch more on machining and changing the valves to SS competition valves, special valve springs, etc. Edelbrock sells a complete set of heads for around $1700 ready to bolt on. Their advantage is they're aluminum so you can get away with running at least 10.5:1 compression ration without pinging problems as compared to 9.5:1 with c.i. heads. So many choices, so few bucks !!