Are steam holes necessary on a 400 SBC?
Are steam holes necessary on a 400 SBC?
Drilling Steam Holes in a Cylinder Head Having stated that, the general consensus is to use the proper 400 style head gaskets with steam holes and use them as a pattern to place the holes in the correct position.
How much horsepower would a stock 400 SBC with Vortec heads?
376 hp
See all 12 photos Here’s the 400 with the stock Vortec heads on the dyno at Westech. We retained the stock Vortec springs to break in the cam. With the stock Vortec heads, the low-compression 400 managed to make 376 hp and almost 450 lb-ft of torque.
How much horsepower does a stock 400 small block Chevy have?
Its a 2 bolt 1970-1980 block that made 150-180 HP stock.
How much horsepower does a Chevy 406 have?
525 lb-ft and 490 hp From an 87-Octane 406. There is no one formula to follow in building the ultimate engine.
How much torque does a 400 small block Chevy have?
With timing and jetting maximized, the 400 managed to produce 458 lb-ft of torque at a still low 4,000 rpm, while kicking up the peak horsepower to just 401 at 5,400 rpm.
What type of head gaskets with steam holes?
For example, it appears that Trick Flow will not warranty a head if the steam holes are drilled. Having stated that, the general consensus is to use the proper 400 style head gaskets with steam holes and use them as a pattern to place the holes in the correct position.
What kind of engine does a Chevy 400 block have?
The 400 ci block is the only Chevrolet small-block that has the steam holes on the deck surface. The Chevrolet small-block is by-far one of the most versatile V8 known to man.
Can you drill steam holes in a head?
As for the steam hole question, there are multiple suggestions on how to drill the holes and you should consult the manufacturer of the actual head you will use in order to be sure you are drilling correctly. For example, it appears that Trick Flow will not warranty a head if the steam holes are drilled.
Do I need to rebuild the stock 400 heads?
If you need source links for the castings and completion parts just ask. The stock 400 heads would be a total waste of time, those are just smog era open chamber crap heads. Cost you close or the same to rebuild old junk heads as it would be to get a basic entry level aluminum head that will be a whole lot better.
