Well, I live about an hour away from the Brodix facility and made the trip up there today with an LT1 head. One of the local engine builders has been in contact with them about possibly converting one of their current heads to work with the LT1. Me and a friend took the stock Lt1 head and a head gasket so they could compare and find a casting pretty close. They showed me a new casting called the RR 200(Road Race) that they think they will be able to make work. They want me to come back up their with my intake and an intake gasket to see how the ports match up. Here were the flow numbers of the RR 200 with just a CNC combustion chamber port.

.200 141 106
.300 221 145
.400 242 177
.500 265 184
.600 272 186
.650 273 186

Check those numbers against their as cast track 1 head

.200 124 103
.300 179 138
.400 228 164
.500 264 178
.600 276 186
.650 278 188

For comparison, they said you could add about 20cfm to the exhaust numbers to compare to AFR's which use an exhaust tube to get their numbers. These were also with a 200cc intake port as opposed to a 210


He said retail on these heads are about $850 bare, ~$1450 assembled, and ~ $1750 full retail on the CNC combustion port. They are suppose to get together and see about how much more it would cost to do the necessary things for conversion.


Anybody interested? Email me if interested and I can show it to Brodix when I go back next week. blk95ta@aol.com

 

I would be very interested in this, that seems like a pretty good deal, and those flow numbers are very impressive, especially the lower lift #'s. With the right cam, they would make serious power, especially with something like an XE series cam....

 

i'd be more interested if they could get the .400 number into the mid 250's or 260 even so they could compete with afr's 215cc raised runner head. see if they would be interested in making a head thats 210 or 215cc for us. i would use the afr heads but they dont offer the lt4 intake bolt pattern.. and they cost $3900 complete. thats just a few things i'd like to know and if they can offer a 210 or 215 cc head get us some flow numbers.

 

Those numbers are not with a complete CNC job. Just a combustion chamber port. 250 should not be a problem with their CNC port added. Their CNC ported track 1 head flowed 263 for example at .400. The road race head i saw only comes in 180 and 200 that I know of as they were trying to make a really good flowing street car head.

 

Sounds interesting, keep us informed.

 

I am putting a set of Brodix heads on my car right now (Brodix 10's). They have been converted to LT1 reverse-flow. They have a 200cc intake port, 75cc exhaust port and the flow numbers are as follows:

.200 154 113
.300 222 163
.400 270 193
.500 302 219
.600 318 228
.700 335 239

From what I've heard, Brodix makes an incredible head. There are some who don't think it's worth it to make the conversion. It certainly isn't a very common thing on an LT1.

 

so what were they thinking price wise for a set of cnc ported ones. oh, and will they offer it for use with the lt4 intake.

*hopes springs will allow for over .600 lift

 

nateh, what did it cost you to get a set converted to reverse flow cooling?

 

I'm also interested to find out what it took to do the conversion. Can you describe the process and things that were done to make it happen.

Also, how much cash outlay?

 

I bought the heads already converted and ported. This set cost less than $2K assembled with 2.08 intake, 1.6 exhaust valves, CC 977 dual coil springs and titanium retainers. The process involves welding shut several of the coolant passages and machining new openings in the head deck. There are also oil returns that need to be opened. I can't remember all the openings for coolant flow. The steam tube holes need to be machined and holes for the brackets need to be added. I don't really know how much a machine shop might charge to do the conversion. I can put you in touch with a guy who can tell you though. If you want more info, let me know.

An important detail is that the LT1 header primary flange had a different bolt pattern than would fit on the head. I had to weld a different flange on my headers to make it fit. Plug access looks pretty decent and header bolts should be accessible with a regular socket.

I was considering just getting my LT1 heads ported, but I heard about these and decided to try them. The cost wasn't too much more than a good set of ported LT1's and the flow is significantly better. Now, I know that flow numbers don't tell the whole story, but that's about all we have to go on at this point. Considering the port volume is at 200cc's, I think that these should perform very well. Just for comparison, ported LT4's come out to about 204cc's and they don't flow 302 at .500 lift. I haven't seen any LT1 heads that flow like this on a 200cc port.

Does that answer your questions?

 

Hopefully Brodix will be doing the conversion themselves. We looked at all the coolant passages that needed to be changed today plus the addition of the line at the back of the head. They can also do the necessary bolt pattern for our headers there at the factory.

 

How about some 18 degree heads for an LT1 then we might can compete with the LS's Anyone?

 

I dont think they have looked at any 18 degre heads. I am just happy they are looking at 23x heads right now. They say they have been geting more and more calls about heads so maybe if we all started calling it would help. 479-394-1996

 

I made a mistake, the heads are called Race Right, or RR 200s

 

The heads sound good, but I don't want to have to change header flanges to make it work. Smackkk, will they be changing the bolt pattern to fit the normal lt1 header flange?

Nateh, What part of Indiana are you in?