Drilling steam holes sbc heads
WebThis is our way of modifying the wonderful FloTek 102-505 aluminum Small Block Chevy head for use on a 400 Small Block which requires steam holes. I am SURE ... WebAug 23, 2015 · I had Dart Pro 1 215 aluminum heads on my 377 ( 400 block, 350 crank). It was a drag race only piece so I didn't drill steam holes. I'd go with aluminum for heat dissipation. Comp Cams Xtreme Duty series has robust grinds for streeters. I've got the .490 lift hydraulic in my current motor. It works with the 1 7/16 springs the Darts come with.
Drilling steam holes sbc heads
Did you know?
WebJan 23, 2005 · As mentioned, the ONLY difference between 350 and 400 heads is the steam holes in the 400 heads. Also, as mentioned, to use 400 heads on a 350 or 327, simply use 350 head gaskets. And to use 350 heads on a 400, simply place a 400 head gasket on it, keep the gasket in place with some head bolts, drill 6 steam holes. Oh ya, … WebNov 23, 2015 · 106 Posts. #2 · Sep 30, 2015. I have never had a problem drilling the holes in the iron heads. I always used a 400 gasket with the steam holes and marked them …
WebOct 29, 2024 · Maybe you don't absolutely need to drill the steam holes but I don't see any downside. If I recall correctly, since 400 sbc chevy blocks have siamesed cylinders; the steam holes are supposed to prevent steam pockets (air bubbles) from forming at the tops of the cylinders by providing an escape route. WebFeb 28, 2013 · Originally Posted by 88Fount33. The cylinders are Siamesed in the 400, so the block can trap steam below the deck between cylinders, this pocket can build up until you get a hot spot and distort the walls and …
WebFigure 1 - Steam Hole Locations (400 C.I.D. Engines ONLY) Drill three .125” holes in each head using 400 c.i.d. head gasket as a guide. DRILL ONLY THE THREE LOWER STEAM HOLES (closest to the spark plugs) as indicated. Drill straight into the head (90° from the deck) until the drill breaks through into the water jacket (about 9/16”). WebMar 3, 2012 · The steam holes in the heads used on top of a 400 are not there to help at higher RPMs. They are there to help cooling at LOW RPMs. Because the 400 block uses simaesed cylinders coolant can not pass between them. There are little "corners" where coolant can "hide out" between the cylinders and start to heat up to the point it starts to …
WebFor your convenience, we stock complete and partial ARP head-bolt kits, studs and washers. ARP part numbers for the bolt kit are #134-3701 and the stud kit is #234-4301. …
WebJun 8, 2005 · Trick Flow: seems that Trick Flow says drill the intake side at a 45 degree angle towards the exhaust, while others say 15, 20, 30 degree angle for the intake side. … garage power tool storageWebJul 9, 2010 · Most stock blocks have this area not drilled. So if you want to improve cooling on a 400 block, or any SBC block for that matter, use the head gasket as a template and drill the holes yourself. The 1/8" steam holes are too small to make any difference. To further improve cooling on a SBC, run water lines from the rear of the manifold to the front. garage power tool storage ideasgarage power tool organizationWebFeb 24, 2006 · Discussion Starter · #1 · Feb 21, 2006. I just got my L-98 aluminum heads back from the shop and they didn't drill the steam holes for the 400 block as I had requested. When I asked why, they commented that it really wasn't necessary with the aluminum heads and I won't have any cooling issues. They also commented that the … garage pro auto worbWebHow to drill steam holes in AFR cylinder heads. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test … garage power washingWebJun 15, 2012 · Start by marking the approximate steam hole locations with a marker or die. Next insert 2 dowel pins into the heads dowel pin holes and lay the 400 head gasket … black men photo galleryWebApr 25, 2016 · The Ford Racing reproduction Boss 302 block has siamese cylinder walls and can be bored to 4.125". That block has steam holes and Ford recommends drilling matching holes in the heads if they're not already there. I believe the Scrub 400 cu in small block also has siamese cylinder walls. garage pressure washer setup