Cadillac intake manifolds 500 472 425 & 368 stock & modifications flow porting supercharger M112 TVS 

Completely grinded off the old TBI mounting pad from the manifold and mounted a 4 barrel carb adapter pad

@@raysoto1969 thanks!

Yes, a 500 intake on a 425 will give you more torque.

I don't think there are any aftermarket intake manifolds for the 1963-67 429 engines.

@@raysoto1969 that means you can only use the original part? no other possibility do you think? Thank you for your help

@@aurelmoumeni3246 unfortunately 😕

@edwardharmon3597 look for GM part number 1615445

Definitely

The Edelbrock 2115 is the most popular, however it probably won't fit the under stock cadillac hood or stock ac compressor

Only worth it if you have cam and better exhaust in my opinion

It will work just fine

Yes, easy

Injectors not spraying? ... could be the fuel pump or fuel pump relay. Could be the oil pressure switch. You nay need to get a noid light to see it the ECM is actually pulsing the i jectores to spray.... if there is no pulse at the injector during cranking, then the problem can be related to the ECM or a no power issue. Check your fuses. It could also be something wrong with the distributor... this is how the ECM gets a timing reference to pulse the injectors, could be a bad pickup coil or bad ignition module. Check wiring to the distributor. Make sure there is power. Make sure the igition rotor rotates when cranking the engine... if not then you have a broken timing chain or broken cam gear. Make sure you have fresh gasoline, old gas will not burn well and old gas can clog fuel lines and injectors

Which one are you interested in?

The video is just about intakes

@@raysoto1969 Where is the video about cams?

@@blackericdenice Richard Holdner has some good videos about that subject

@@raysoto1969 I don't think he used a 425.

@@blackericdenice Unfortunately the Cadillac 500 gets all the testing and fame. Very little dyno time for the smaller Cadillac engines. Although most of the same modifications can be made on the 425 with similar results.

Look on Ebay for a used one

The 472/500 intakes will physically bolt onto a 368..... but you will have a very poor running engine. You will have a very large step going from this intake to the 368 ports in the head... and the runners on these intakes are just too big for a 368. Your best bet is to find a 1980 carbureted 368 intake manifold.... Or get a TBI to Holley 500 two barrel adapter plate.

@@raysoto1969 What about the 425 Carburated Intakes?? Would they fit without issues? I am doing the same as this guy and i can't find The correct intake information i need, I want a 4bbl intake single plenum that will fit on the 368 but have no part numbers and i don't know if the 425 will fit, if not then the 472 or the 500 will Please let me know, thx

@TuningDutchy The 425 intake will bolt on. Just put some RTV around the ports to make sure you get a good seal

@@raysoto1969 Aah perfect to hear, now it will bolt on, but will it leak air because of the ports or doesn't it? since i know that the 472 and the 500 have bigger ports and will possibly cause air leaks

@TuningDutchy the 425 intake on a 368 doesn't leak if you use the 368 intake gasket... however, putting a 368 intake on a bigger engine will more likely leak

It will bolt on, but you will be left with very low compression, and therefore very poor performance

@@raysoto1969 guess ill just swap it out

Have you tried that edlebrock intake? Thinking about getting it for my 425 but it’s $500 and I wanna know if it’s actually worth the $

@@Dub-ce3dy When I was playing with the big Caddy's, aftermarket stuff wasn't available too much. Personally, I would go with something that will build the low and mid range torque, what Caddy's are known for. The stock intakes if you look at them, they flow in a downhill, which they should, but then uphill. Let me know how you make out in your build.