0
What else can I help you with?
Will a small block chevy heads fit pontiac 400?
No, no, no. Two totally different motors.
What small block Chevy heads can you use on a305 4bbl Chevy motor?
305 heads of course, 350 heads will fit for sure and possibly 400. obviously no big block heads will fit. a 305 with 400 heads gets you a little over 352. 350 with 400 heads is a 383. add and divide
How do you tell the difference between a Chevy 400 and a Pontiac 400?
Many ways. Pontiac 400 has a cast aluminum timing cover, that mounts the water pump directly on it, Chevy 400 has a stamped steel timing cover, water pump mounts to the block. Pontic 400 has fuel pump on the drivers side, Chevy is on passenger side. Pontiac has a separate valley cover below the intake manifold, Chevy intake IS the valley cover. Pontiac distributor does not go through the intake manifold, Chevy does. Pontiac has 10 head bolts per side, Chevy has 17. Pontiac has long exhaust ports that bend 90 degrees from the side of the cylinder head, Chevy exhaust ports end at the face of the cylinder head. Pontiac spark plugs are above the exhaust manifolds, Chevy is below. Pontiac 400 is physically larger than the small block Chevy 400 also.
Will 350 heads fit a 400 block?
350 heads will bolt to the 400 block. They will need to be drilled for the "steam ports" in the 400 block.
What problems do you have putting 1993 Chevy heads on a 1978 400 Chevy?
it depends on what block the 1993 heads are from. im thinking they are from the lsx family. and if they are you cannot put them on your 400 the heads just wont fit bolt patterns are wrong and the heads are just a totally different design.
What is the weight difference between a Chevy 454 and a Pontiac 400?
For complete engines, the weight of the average (stock) 400 Pontiac at about 650 lbs. is roughly between the average (stock) Chevy small block at about 575 lbs. and the average (stock) Chevy big block at about 680-685 lbs..
Is a 400 engine in a 68 firebird a big block or small block?
Pontiac uses same block no small or big, Chevy describes their engines small or big
Is the 400 a small block or big block?
The 400 Chevy is a small block engine. The 400 BIG BLOCK Chevy does not exist! 402 big block Chevy does. it seems in the early 70s Chevy put 402s in their pick ups and they had 400 badges. this opened the can of worms known as the non-existant big block 400.
What is the firing order for Pontiac 400 engine both small block and big block?
The firing order for the Pontiac 400 engine is that the small block powers the big block.
What is the difference between a Chevy 400 and a Pontiac 400?
Basicly everything, The Chevy 400 is a member of the small block Chevy engine family and has a great deal of parts interchange with 265-350 chevys. (heads, intakes, distributors, water pumps, exhaust manifolds). The small block Chevy 400 has 4.40" bore spacing, a deck height of 9.025 and 2.65" main journals. The Pontiac 400 is a member of the Pontiac V8 family and has interchangability with Pontiac V8s 287-455. (heads, intakes, waterpumps, distributors, exhaust manifolds). The Pontiac 400 is physically larger with a bore center of 4.62", a deck height of 10.23" and main bearing journals of 3.00". The two engine families however have almost nothing in common, and almost no parts will interchange. The only thing they do have in common is the both share a 4.12 bore and 3.75 stroke. Pistons, crankshafts, and connecting rods, will NOT interchange due to design parameters. Both engines also require a specific transmission bellhousing since they do not share the same bolt pattern.
Can you put 400 Chevy heads on a 350 Chevy engine?
noNEW ANSWER: Sorry but the above answer is wrong. The only thing that is different on the 400 heads is that they have steam holes in them and it don't matter if they are blocked off by the head gasket. And YES they will bolt right on the 350 block with no problems.
Is a Pontiac a small block?
Depends on which Pontiac engine you are referring to. Any GM engine 400 cubic inches and under are considered a small block with two exceptions. The 396 is a big block and there were certain 400's that are big blocks. Two versions of the 400 were built.WRONG. All Pontiacs from 326-455 are the same size block externally. The only major difference is that the 326, 350, 389, and 400 have a 3" main bearing size. The 421, 428, and 455 are 3.25" mains. Now...if you are talking about comparing a Pontiac block to say a Chevy block....the Pontiac is larger than a small block and slightly smaller than a big block.
