1x4v vs 2x4v, 600 vs 450

Well.....with the few FE 428PI & 428CJ Motors that I have been involved with either as daily drivers or as daily drivers/weekend racing, I know there is one or two oil hole up top (block) that can be blocked off to increase the oil presure for the lower half of the block. The Cam, Lifters and Valves still get all the needed oil. it has been almost 20 years since I built one that I just cant remember which hole/holes to plug. Maybe someone on here can help with that.
David.

 

Our 67 500 has the original carbs. Pony Carburetors restored ours about four years ago. The secret is in the linkage. It took some time but by adjusting periodicaly they are great now. Having a good restoration is really the way to go. Good luck -- hang on to your pocket but they are like new when done!!
Al

 

I have an opinion...I have a 427 SO in my 67 GT500 with the dual quads. i am in the process of rebuilding the engine and replacing the heads with a set worked aluminum heads and an aluminum single carb intake. My reason for changing the dual quads intake...i was never happy with the performance. Also when i pulled my engine for rebuild i found 2 much gas had been leaking through and had washed out the rings. I also had another problem...i was burning oil much faster then i anticipated. The problem was the gas had been collecting in the oil pan...mixing with the oil and burning a lot faster then it should have.
So in a desire to go fast and reliability i have boxed up my dual quads and intake and will run a single carb setup.
I knew this was the right move when i was looking at Charley's Super Snake...no dual quads. Charley's 67 GT500 was the only 67 to get a Shelby installed 427. The motor came out of GT40 and was ready to race...and no dual quads. If it was such a great setup why didn't Shelby run it on the Super Snake? I think if you are going for looks and originality then go with the dual quads...if you are thinking performance a single carb setup is the way to go.
But like i said this is my opinion...

 

I agree with both of the above threads, the 600s rebuilt by pony carbs seem to be the answer,I would use a medium riser or blue thunder intake, the low riser just doesnt look right. If your after performance with reliability go with a single four barrel, thats what was done with a lot of them back in the day.

 

I had Tri Power on my CJ years ago. As mentioned before, the trick is in the linkage set up. If you got it right, it runs good. If not, pain in the butt. Running a single four with the correct setup is much more driveable. Maybe not as impressive when you pop the hood thou.