Even though I may be up there next weekend I'm afraid the best I could show you is a stock set of Infiniti Q45 heads

However, I do know a guy in 20744 with a set of Q45 heads. He says they are low mileage 89-93 style. I think he only wants $400 or so for the heads and intake. Not sure if you'd be interested in the challenge.

I'll let you know if I make it up to Maryland this weekend.

Jeremy

 

And I thought my Dominion 32V heads were cooler than Fonzie!

 

Rest assure they are! They are my friend! I've always wanted some, and in '98 a friend of mine put a deposit down on some, then went broke, so I never got to see them and how they performed.

DOHC engines are sweet!

 

Wow this is an old thread!

It's a shame I got busy building another project and I still haven't worked on this one. In fact the heads are up for sale.

Oh well, maybe one day....

 

bah I just read this whole thing to read the project was abandoned!!

well, it doesnt look easy I will say that. I would attempt it if I had a bottomless pocket.

 

Yeah it sucks. But if those heads don't sell before I move then I'll keep them and work on it when I have a garage again. I don't anticipate it costing a terrible amount of money (that's a relative statement of course) but I will have to buy a new welder ($2-5k) and the block I want to use runs over $3k.

Does anyone know the difference in the bore spacing between an LSX block and an SBC?

Thanks,
Jeremy

 

I could get someone to do my welding, the main problem would be getting the perfect valvespring components (problems I see). Anyone have a diagram of a nice OHC valvetrain layout?

 

That's actually the easy part (as easy as you could hope for anyway). There is a guy on one of the Nissan forums who did some measuring and testing and milling on a set of these heads to see what he could do. He found that there are some SBC springs that can be made to fit these heads and thereby allow you to run more aggressive cams.

The hardest part should be setting up the timing belts or chains, especially if you go for chains. Pete Aardema has had success with the belts though, so that is probably how I will do it.

Edit: I did a little research and it seems that the bore spacing is the same for the Gen III engines as it was for SBC's. I might just have to pick up an iron truck block and get back into this project.

 

I know this is a old zombie thread back from the dead. I haven't been here in awhile(2005) and logged in to read this thread hoping to see some developments. Cool ideas though.
Nice to see some one is thinking outside the box.
I really like DOHC V8s and hope GM will improve on the northstar or build something I can try and get and play with.

 

Eh, I haven't really pursued this one due to some other projects. I still have the heads and a few other odds and ends in my house right now though. Maybe one day I'll find the time to start on it again.

Lately I have been looking at motorcycle heads to see if I can find something that will fit. There is hope in a drag racing version of the ZX14 heads that has bore centers very similar to the Ford 4.6 modular motor. I'm still looking into that one though.

 

For what kind of project?

 

Think C5 corvette with the motor behind the driver.

That's my latest and greatest idea anyway, I'm going to talk to a guy one Friday about building the chassis. I would like to do that part myself but it's hard to argue with a tried and true mid-engine chassis setup for under $10k, and I just don't know enough about chassis building to guarantee the same result.

From there I'll buy a high mileage C5 and start chopping up the body panels and fabricating my own to fill in the holes, basically shortening up the front and extending the back. I'm still not sure what to do about a transaxle, the riccardo unit in the Ford GT has potential to handle the power and still offer 6 gears, otherwise maybe a Mendeola setup.

I've been talking about building a big cube gen III based on the new GM LSX block but obviously this is a novelty project so a novelty motor (i.e. 4 cam) might fit in well. If I can't get it to make power I can always add a few turbos.

Don't expect this project to progress any faster than the Infiniti headed SBC though, it's a lot of money to throw around.