StevenGuthmiller Posted January 6, 2023 Posted January 6, 2023 (edited) Does anybody happen to have any information of where I might find a Pontiac 4 barrel intake manifold? I'm considering going with a single 4bbl on my '64 Bonneville, but they don't seem to be very prolific. Everything has tri-power intakes. Already looked at the intake from the '68 Firebird, but it doesn't look right, and it's too wide. Thanks! Steve Edited January 6, 2023 by StevenGuthmiller
Exotics_Builder Posted January 6, 2023 Posted January 6, 2023 Did not the Polar Lights GTO have a Single 4 BBL? I can check tomorrow as I was converting that 64 to a 65 and was going to do a tri-power. AMT 64 Pontiac Grand Prix but it looks a little "lumpy" AMT 65 Bonneville
deuces wild Posted January 6, 2023 Posted January 6, 2023 How's about the one from the Revell '68 Firebird?????.... Sorry, no pictures....
Exotics_Builder Posted January 6, 2023 Posted January 6, 2023 4 minutes ago, deuces wild said: How's about the one from the Revell '68 Firebird?????.... Sorry, no pictures.... In his original post, he said he already checked it out and said it does not look right and too wide
larman Posted January 6, 2023 Posted January 6, 2023 (edited) The AMT '65 GTO has one, it has a blobular carb molded to it. Looks very similar, if not the same, as the one in the '65 Bonneville in the directions posted above. Edited January 6, 2023 by larman
Carmak Posted January 6, 2023 Posted January 6, 2023 All Pontiac 326/389/400/421/455 intakes are the same size. There was a slight change from 59-64 to 65-78 where the bolts and ports changed enough that they do not interchange in the 1:1 world, but that is a non-issue in 1/25 scale. The 68 Firebird intake is designed for a spread-bore carburetor (the primary ports are smaller than the secondary ports) and your image shows this. All 64 Pontiac 4bl intakes were square bore (all port the same size). Once again, I am not sure this could be seen in 1/25 scale. I assume you are thinking about using the intake from the Revell 68 Firebird. I think it would be a good choice. As for a carburetor any Carter AFB would work. They were commonly used on mid to late 60's Mopars. Craig
Exotics_Builder Posted January 6, 2023 Posted January 6, 2023 Revell 68 Firebird instruction I have all the above kits and can get the parts to photograph if that helps
Exotics_Builder Posted January 6, 2023 Posted January 6, 2023 First, Polar Lights 64 GTO LeMans AMT 65 GTO Revell 68 Firebird 400 Revell Firebird compared to AMT GTO, AMT GTO on top Revell Firebird compared to Polar Lights GTO, Polar Lights in blue AMT 65 Pontiac Bonneville (looks the same or very similar to the AMT 65 GTO) AMT 64 Grand Prix (looks the same or very similar to the AMT 65 GTO)
Bainford Posted January 7, 2023 Posted January 7, 2023 Looks like the Polar Lights is the winner of that lot. Since I had a couple nearby, I checked out the MPC 70s Firebird. Lacks fidelity.
R. Thorne Posted January 7, 2023 Posted January 7, 2023 8 hours ago, Carmak said: All Pontiac 326/389/400/421/455 intakes are the same size. There was a slight change from 59-64 to 65-78 where the bolts and ports changed enough that they do not interchange in the 1:1 world, but that is a non-issue in 1/25 scale. The 68 Firebird intake is designed for a spread-bore carburetor (the primary ports are smaller than the secondary ports) and your image shows this. All 64 Pontiac 4bl intakes were square bore (all port the same size). Once again, I am not sure this could be seen in 1/25 scale. I assume you are thinking about using the intake from the Revell 68 Firebird. I think it would be a good choice. As for a carburetor any Carter AFB would work. They were commonly used on mid to late 60's Mopars. Craig The 1964 manifold (originally shown by OP) has a slightly bigger secondary opening for the afb carb. The later manifolds for q-jets are noticeably larger secondaries.
Bills72sj Posted January 7, 2023 Posted January 7, 2023 I know all 3 of my AMT 65 Big Girls 4BBL intakes are pretty lame. I have most every year GTO and some 71-72 Grand Prixs. My Firebird collection is pretty sparse. If you discover which one will work for you, I will see if I have it and send it your way. Since I am generally a Day Two builder, I tend to use the optional intakes. (Tri-Power, blower, injector stacks etc.)
StevenGuthmiller Posted January 7, 2023 Author Posted January 7, 2023 Thanks for all of the input guys! It appears at this point that options are very limited. Most of the old annual kit pieces appear to be so poorly defined that I'm pretty sure they're out. It's looking like the best option will be the manifold from the '68 Firebird, but I think I'm going to investigate modifying it a little. I'm thinking that I'm going to try to open the voids that should be present in the manifold itself, and add a valley pan underneath. Wish me luck! Steve
StevenGuthmiller Posted January 7, 2023 Author Posted January 7, 2023 I think I'm headed in the right direction, BUT........ I'm thinking that the engine from the '66 GTO kit might be a better starting point. It appears to be closer to the '64 in appearance. The valve covers from the '61 kits are wrong, and with the '61 having a generator instead of an alternator, the pulley configuration is incorrect as well, and thanks to a couple of members who sent me engine parts from the GTO kit a few years ago, I have plenty of parts for that engine to start with. Anyway, after opening the manifold up, and digging out one of my coveted Carter AFB carbs from Fireball, I think I'm on the right track. Steve 1
Bainford Posted January 7, 2023 Posted January 7, 2023 Oh yeah! That looks great. Sometimes it’s a matter of finding the manifold hiding in the blob of plastic. 1
StevenGuthmiller Posted January 7, 2023 Author Posted January 7, 2023 (edited) 1 hour ago, Bainford said: Oh yeah! That looks great. Sometimes it’s a matter of finding the manifold hiding in the blob of plastic. Thanks Trevor. I'm pretty sure that I'm going to go with the '66 GTO engine instead, The valve covers are more correct, and the intake actually fits better anyway. Now for some valley pan detail. Here's another little thing that grabbed my attention while looking at reference photos that was an easy add. Always looking for little details to add to enhance appearances, it was pretty quick and simple to add the plug and bolt hole detail on the ends of the heads. Not a big deal, but at least one of them might be noticeable in the finished engine compartment once a wash has been applied. Steve Edited January 7, 2023 by StevenGuthmiller 1
Bucky Posted January 8, 2023 Posted January 8, 2023 Yer on the right track with engine, I do believe. Any updates on the medical condition of that thumb?
StevenGuthmiller Posted January 8, 2023 Author Posted January 8, 2023 12 hours ago, Bucky said: Any updates on the medical condition of that thumb? Had a run in with a car door at work.........The door won. Occupational hazard you could say. Fortunately, it never hurt too much, and since the evening of the first day, hasn't bothered me at all. Really looking forward to seeing what's under my thumb nail when it falls off! Steve
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