Brodix heads for the the Z28! 

I love it already! I just ordered some ik200’s today for my solid roller 327 Sbc and I’ve been wanting someone on RU-vid to JUS CHANGE THE HEADS! Everyone changes cam and etc… I want to see what just heads will do going from unported double him, 2.02/1.60 bronze valve guide heads to aluminum. I’ll be watching this closely and subbed!

Awesome

Just another note here, hopefully I’m correct…you should actually be able to run up to 1 point higher in compression with aluminum heads without hurting the detonation factor. Do some research and if I’m incorrect, please let me know! 🙏🇺🇸

I think they make guidenplates that slide for fine adjustment each rocker can be aligned individually. I almost have given up on those, fulcrum ball roller tips self align and don't really need the guide plates at all. I had an aluminum rocker break also. Nice rs.

Deja vu - I went through the exact scenario with my first car long ago. Thinking of what came out of the 80s/90s, just about every car magazine seemed to have an annually required "Cam Swap!" story, in which the heads were a footnote or nearly forgotten. So I can vouch that with 75cc chambers on a 355, so much is left on the table with a 290 cam it isn't funny. People swapped cams... and wonder what happened. I believe you will like those IK180's, and from what is mentioned of the existing cam, do the math for DCR and I suspect you find shaving the deck to get between 10.2 and 10.5 to 1 is a sweet spot - existing 64cc chambers are likely near bullseye 10 to 1 [assuming zero decked], and you should grab a little more compression having 234@0.050" - how much more depends on [0.006"] intake close point. As a bonus, getting cr where the cam is happy might also make that single plane wake up. I think Bill Jenkins preference for any pump gas build was to get dcr in the 8.1 to 8.3 range, and... he was a walking encyclopedia of all things engine. Hope you got that #4 cylinder sorted out - skirts are likely heavily scuffed and walls like that usually mean a fair amount of blow-by. Needs a proper machine shop hone & rings as found, and maybe a new piston: throw the dingleball in the trash. Good catch on the springs by the way: being oversprung with flat hydraulics is a mistake.

Nice video! I am looking forward to your test drive video. Did the heads and manifold make a difference?

I’d like to know myself.. I’ve been trying to find some reviews with real # on these heads . I’ve got an L-82 with the stock heads and just makes me wonder if there’s any power added (how much if any ) or just the weight advantage

Didn't want to go with at least 2.05 intake valves? How was the result?

180 meaning the runner volume but these heads flows as cast around 250cfm