RHS Heads
RHS Heads
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
Nope.. I don't think they flow well enough despite the valve and runner sizes, I believe the RHS heads do better. To get 400+hp you need heads that flow as well as AFR185's and then you need either lots of rpm or lots of displacement to move enough air. Here's a chart comparing many of the popular heads..
Windsor_HeadFlow on Flickr - Photo Sharing!
And here's the RHS flow data..
Windsor_HeadFlow on Flickr - Photo Sharing!
And here's the RHS flow data..
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New User
Joined: Jun 2009
Posts: 24
Likes: 0
Thanks for the input. I am going to go with the RHS heads. I found a set of windsor sr. on ebay but the deal sounds to good to be ture. 400 may be a out of reach goal but I am going to try my best to make it, and keep the engine tame enough for every day driving. When I get the thing together I will post a video of the start up. We have a shop here in town with a rear wheel dyno $60 per pull I am going to have it checked. I have heard you loose 100hp between the flywheel and the rear wheel is that about right?
FTE Legend
Joined: Jun 2006
Posts: 31,930
Likes: 1,499
From: Ottawa, Ontario
You loose 20-25% of crank output with an automatic drivetrain if the vehicle has stock sized tires, more with bigger meats. Manual drivetrain losses are more in the 15-20% range.
This is going on a 5.8? Will it be carbed or EFI?
This is going on a 5.8? Will it be carbed or EFI?
