More 454 questions.
Pro
Joined: Mar 2007
Posts: 668
Likes: 15
From: Central Fl
Not to crash your thread. If any one is interested. I have a complete 496 stroker 4 bolt with aluminum square port heads. Its complete from intake to oil pan freshly rebuilt ready to drop in your car never fired up. I also have a freshly rebuilt 454 4 bolt from intake to oil pan never fired up. Both motors are set up to run on pump gas. PM me for specs and details.
Thread Starter
Melting Slicks
Joined: Feb 2014
Posts: 2,409
Likes: 44
From: NC
http://www.ebay.com/itm/BIG-BLOCK-BBC-CHEVY-OVAL-PORT-HEADS-ALUMINUM-ASSEMBLED-BBC-OVAL-274-/370773049544?pt=Motors_Car_Truck_Parts_Accessories&hash=item5653cbc0c8&vxp=mtr
What do you guys think of this set of heads?
What do you guys think of this set of heads?
Thread Starter
Melting Slicks
Joined: Feb 2014
Posts: 2,409
Likes: 44
From: NC
Also that 80lb weight savings is pretty tempting.
Can I run 9.5 compression and boost later, on iron heads and stay on pump gas? This one's the big reason I'm considering going to the AL heads. (the weight saving is another huge secondary perk).
Instructor
Joined: Aug 2012
Posts: 164
Likes: 1
From: Lancaster Kentucky
Brother, 450 horses out of a big block is not done with a crazy modified engine. Match your parts correctly and it's done relatively "easily". Yes, 781's will take you to 450, bigger valves can support 550+ depending on who you ask. As for F/I, I have no idea but I would think you would have multiple issues other than just heads...
Thread Starter
Melting Slicks
Joined: Feb 2014
Posts: 2,409
Likes: 44
From: NC
Brother, 450 horses out of a big block is not done with a crazy modified engine. Match your parts correctly and it's done relatively "easily". Yes, 781's will take you to 450, bigger valves can support 550+ depending on who you ask. As for F/I, I have no idea but I would think you would have multiple issues other than just heads...
So I'm looking at the 489 stroker, get a good cam that's good for up to what 5500? 6k? Hyd roller cam, roller rockers, headers, and an intake to match? And that's all it'd take?
Instructor
Joined: Aug 2012
Posts: 164
Likes: 1
From: Lancaster Kentucky
RPM's will depend on lots of things but that seems like a high rpm range. Just throw everything into a piston speed calculator and see how it works out. I'd be willing to bet 5k would be the acceptable ceiling.
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Thread Starter
Melting Slicks
Joined: Feb 2014
Posts: 2,409
Likes: 44
From: NC
Nice vid.
Looks like it just squeaks by at 5500.. (3850)
5200 is 3683. Which is more where I think I'd feel more comfortable. Looks like plenty of a safety margin. I figure that'd be where Id' set a rev limiter.
Looks like it just squeaks by at 5500.. (3850)
5200 is 3683. Which is more where I think I'd feel more comfortable. Looks like plenty of a safety margin. I figure that'd be where Id' set a rev limiter.
Thread Starter
Melting Slicks
Joined: Feb 2014
Posts: 2,409
Likes: 44
From: NC
Going to be ordering the stroker, I am going to spend a little more on it, now rather than have to worry later. Forged crank and rotating assembly for about 2k going in it.
Got some other projects that came up this weekend. Apparently my C4's weather stripping isn't so good anymore as I found out after I finished washing it
Also helping my buddy pick out a stereo receiver for his trailblazer, and have some brakes to bleed with the vette.
Also discovered that my trans is shot in the Z-28. Debating on converting it to a 6 speed manual, or putting a seriously built unit in it's place or having this one built.
Still going to order the stroker here soon. Vette's pretty much to the point that I can quit fiddling with it for a while now I think. So progress!
Got some other projects that came up this weekend. Apparently my C4's weather stripping isn't so good anymore as I found out after I finished washing it
Also helping my buddy pick out a stereo receiver for his trailblazer, and have some brakes to bleed with the vette.
Also discovered that my trans is shot in the Z-28. Debating on converting it to a 6 speed manual, or putting a seriously built unit in it's place or having this one built.
Still going to order the stroker here soon. Vette's pretty much to the point that I can quit fiddling with it for a while now I think. So progress!
Thread Starter
Melting Slicks
Joined: Feb 2014
Posts: 2,409
Likes: 44
From: NC
http://www.ebay.com/itm/Comp-Bbc-Chevy-396-402-427-454-Thumpr-Thumper-Retro-fit-283-Roller-Cam-Camshaft-/391116668428?hash=item5b105ebe0c&vxp=mtr What do you guys think of this cam?