Picked up a 292 to put in my 37 over the weekend and ditched the boring old sbc. Now my question for you Y block guys is, 4bbl carb intake or triple carbs? What did yall use and how do ya like it? If I go with the 4bbl Ill be using a blue thunder manifold, anyone had both setups and preferred one to the other? I'll be ordering a cam for it and doing all the other necessary hop ups, just cant decide on how to make it breathe.
Go to y-blocksforever.com. In one of the forums, a guy tested all the manifolds he could get ahold of on the same engine. Blue Thunder won at the top end, modified -B 4 bbl manifold was next, then 3 deuces and the inboard manifold I think. Did the same with headers and manifolds on the same "mule". -B manifold was just as good as BT, trips have the look (and much more pricey of you find them). If you're running a hood, -B manifold is your best bet and most economical pricewise.
Cool deal I'll give it a search. Looked a little on their forum but not a whole bunch. Im leanin towards a 4bbl setup mostly because ive got a carb already so i wont have to do much parts chasing.
Good luck finding a blue thunder 4 barrel manifold, they are no longer in production and hard to find.
I wasnt aware of this. Welp Ill keep an eye out but looks like itll be snagging a -B manifold up then. Thats a shame those BTs looked really nice too.
John Mummert is casting manifolds for y blocks, just a little better than the old Blue Thunder. http://www.ford-y-block.com/Dualplane.htm The manifold test are a little easier to find on Ted Eatons site I think. http://www.eatonbalancing.com/ Or post the question on yblocksforever, and someone who knows that search engine will give you the link. He did a lot of pulls on the exhaust side too.
Mummert has single 4 barrels. Offy 3-2's are low on the totem pole for the 3-2 manifolds. Not well known outside the Y -Block circles but the 600-650 Summit Carb works great on them with a 57-up dist. I have a personal choice also and a Blue Tunder in my stash.
I have a ported Blue Thunder on my y block. Good performance but still uses the factory exhaust crossover and tends to heat up the carb. The Mummert intake does not have the port for the crossover. My vote is for the Mummert intake or an Edelbrock 573. In fact I'd trade my ported intake for a intake from John. The Summit 600 vacuum secondary is an good choice. That's what I run and couldn't be happier.
If you go with the 3x2 setup, beware that all of the 3xz intakes are not the same, big difference in flow.
From what I know, it's hard to beat the "b" manifold for most applications. The Mummert has a great reputation for performance. In going to run a BT (a new one I found) over the "b" I was going to use just because its aluminum.
I've run the 'B' manifold and a Edelbrock 553 3x2 on my Yblock. Runs like a*****d ape with the B manifold and a Holley 600 carb but it just looks soooo cool with the 3x2's.
It depends on your heads too,the "b" works only with the big valve "G" or 113 heads.If you you have small port heads you must look for an "A" intake if you go 4 barrel or an Edelbrock 553 for the 3x2 set up.You will find a lot of info on Mummerts page under information center. Here all the info on the aviable intakes: http://m571.com/yblock/intake.htm
Keep watching that auction site into September, a new batch of these is in production and should be ready by then. I contacted the seller, these are rare and only 32 will be made in this run. I'm going to order one for future use. http://www.ebay.com/itm/282023689796
I snagged up B manifold from a shop my cousin works at. Got a good carb to put on it too. Now im trying to decide on the right cam and in search for some G heads. Think Ill be giving mummerts a ring and see what he recommends on the stick. Also have a cool tbird air cleaner to dress it up with. Should be doin the clean up and painting this week so maybe Ill have some photos to post up soon.
Good info, but I just bought the marine unite. Is it that bad. It would work hard in a boat. I like the low profile
There have been a few who tried them in cars. Looked great but were not very good performers. The Carbs are the same as 53-4-5 Corvettes and the turbo Corvairs. Casting up 90* elbows and putting 2 barrel carbs on them would sure turn heads.
If you want performance, use a 4bbl. If you want looks, and the wow factor use 3x2. just be prepared to spend a lot of time getting them "dialed" in
Why the big question about what kind of cam to run?! Are the old Y-blocks "special" and common sense about lift... duration &...LSA not applied to these?! Increased lift........increase duration ....tighten LSA.... Compare the figures to what was stock.....look what Isky.... Comp Lunati recommend and have a custom cam ground with your own specs. Ain't that what fellas use to do?! What I do......... Don't go crazy and remember...Too radical grind and not enough gear equals... a headache to drive (no pun) 6sally6
The old post are still correct. Look at Ted Eaton’s, 3x2 testing. The marine manifold probably won’t flow with the Offy 3x2, and it’s at the bottom on the list. A Mummert 4 barrel manifold is shown at the bottom as a control. If Chevy needed 3 of them on a 235 six, 2 on a 292 isn’t going to be great. Best place for that manifold is on a marine engine in a vintage boat. Dig thru Ted’s site, you’ll find tests on the other 4 barrel manifolds. https://www.eatonbalancing.com/2013/12/18/y-block-ford-3x2-intake-testing/
Y block powered boats used that setup for one reason, and that was clearance. A '57 and up 2 bbl setup probably flows more.
If you have the 1957 -59 heads with the 1,92 intake valve go with the Mummert unit The 1.78 valve heads won't see much difference in the better flowing intake
I don't understanded the bigger distributor thing The distributor does not go through the intake like a Chevy. I could understand smaller but not bigger
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