Your combination is quite confusing because in theory you cannt put 1963 heads on a 1969 engine assemlby. The heads were redesigned on the later engines and the blocks contained a different piston design to go along with it. You may want to speak to the guy who sold you the car to find out what he did to get your current combo to fit. Any chance you can get me the engine code located in front of the passenger side cylinder head stamped on a metal pad on the block. It would be a code like YK or YKH, etc. As far as single 4 bbl manifold, even aftermarket, you probably will only find something used. Here is a link to a good site for more detail on head interchangeability and manifolds.
www.pontiacracing.net/head.htm
Yes it is confusing as I have read other posts that say this combination is possible and others that say it isn't but since I have one I am pretty sure it is. All I know about the block I.D. so far is it does have 428 in the block casting seen behind the starter when I had it out to adjust the clutch. I will look/get those block codes tomorrow. I'll try to find some hints on the heads while I am looking around also. I will know for sure when I pull the intake but I'm not at a point I want to do that yet.
I ended up using the original starter; I reworked a heat shield to fit and protect the solenoid, heat wrapped the positive and ignition switch leads. I routed the ignition switch lead inside the solenoid heat shield and positive lead from the batt around the back side of the clutch pivot which gave a straight path to the starter running against the block and a good 1.5 inch away from the headers. Having saved $$$ I"d like to spring for new carpet and headliner kit. The interior is med blue throughout, buckets with a 65 4-speed console, Muncie(not sure which one) Hurst shifter has the 50 year anniversary knob, 4:11 12 bolt. It has an early style after market under dash AC; I am debating whether to yank it or leave it.
If you care to see what I am working with google "1967 Tempest 428 cross ram". It's the one with the two triangle aluminum edelbrock air cleaners sticking out of the hood. Ideally I'd go with a single card intake and switch to a GTO hood, wood veneer the dash, add GTO rocker moldings and paint it bright silver metallic with a blue pinstripe to match/bring out the interior color. Oh, and re-chrome both bumpers and maybe install some small rectangle fog lamps in the grille to give it a GTO look. I found some aluminum mesh thats fairly close to a GTO look that I'll cut to fit and inlay over the inner grille halves.
I haven't had a chance to drive it yet; I had a retina detach the day before it was delivered and then knee surgery on the left knee (clutch). I had my son drive me around the block one evening; he put his foot in it and it hopped like a jack rabbit; not sure if that is because of the coil spacers ???? I raised it 3" on all fours with coil spacers since the pictures were taken; stance looks great but I may need to switch to airbags if the ride sucks. I had a 1967 GTO 30 years ago, it had plenty of torque but it never hopped like this one does(I don't like that). I'd prefer it to just spin the tires.
The carbs are Holleys and they don't have chokes. I believe if they had manual chokes I could create the vacuum it needs to keep it running at idle(theory) and stop the caughing/hesitation on acceleration(the acc. pumps are working). Both carbs are sucking from the valve covers to the back ports; I think I'll try plugging those off and see if the vacuum increases.... possible??? Its been sitting quite awhile, I should do a clean and rebuild on the carbs and see what that does.... came from NC and now in Utah probably needs different jets. I don't know if I can add a choke on these carbs???? I probably should just change the intake when I know what I've got for sure.
From what I can tell it has some type of magnetic pickup distributor but the coil is separate. There is no clearance for an HEI due to that bothersome cross ram or I would have changed that first thing. I'll try not to be so long winded when I post the block code. Thanks for the link; I'll go there next, cya tomorrow.
