18 degree SBC needs short block. - Lateral-g Forums

68sixspeed · #1 08-19-2009, 05:29 PM

I looked at 18 degree stuff when I built my 427 as we had heads around. I couldn't due to hood clearance. With a cowl hood you might be ok though. I did find some off the shelf headers for camaro's with 18 degree heads, I think it was hedman, not sure if you found headers yet? Enjoy, it will make HP! -Dan

70rs · #2 08-19-2009, 06:29 PM

I am with you on the fuel efficiency thing. Screw it. I wish I had an answer or information for you, it sounds like you could build a killer motor with those heads.

But in all fairness to the other Lateral-g members here in not getting back to you, it had only been two days between posts. I have had weeks go by without an answer, but when I got it, it was right and worth the wait.
Best of luck with the build. Post up some pictures and dyno results if you can. I'd like to see it all done.

Vegas69 · #3 08-19-2009, 08:11 PM

You're not going to make many friends around here with that attitude including me. Old school stuff is a camaros.net deal.

clay69camaro · #4 08-20-2009, 01:56 AM

Except the 18 degree stuff isn't old. they're early 90's nascar stuff if I'm not mistaken. After reviewing all my data it seems my heads won't work to well with those motors I mentioned earlier and I have been advised to go ahead and go with a 400-414ci motor.

ohhh yeah also since I don't wanna be all old school It's gonna be fuel injected with a pro charger, and I'm working on installing my new sub-frame with c4 vette stuff. My car is meant to handle not only go in a straight line I think I belong on this site well enough.

clay69camaro · #5 08-20-2009, 02:52 AM

Quote:

Originally Posted by 70rs

But in all fairness to the other Lateral-g members here in not getting back to you, it had only been two days between posts. I have had weeks go by without an answer, but when I got it, it was right and worth the wait.
Best of luck with the build. Post up some pictures and dyno results if you can. I'd like to see it all done.

I got impatient and never look at the dates on other peoples posts. So it seems to me like they get instant help. My bad Lateral-G

I'll post pics in project updates when I get a working camera.

Payton King · #6 08-20-2009, 05:59 AM

of using a 9:1 18 degree Busch motor. One of my friends has one and is thinking about doing it with twin turbos and he has a Kinsler individual runner intake for it.

If you really want to be trick go to www.racingjunk.com and hang out there for a while. You could probably pick up a dry sump system pretty cheap as well. For that matter you could probably buy a complete motor that needs freshing with everything you need probably cheaper than you could piece one together.

"The Mule" is running an 18 degree motor...plus the twin turbos

clay69camaro · #7 08-20-2009, 10:44 AM

I probably could find an 18 degree set up pretty cheap on there but the heads I have have had a lot of work done to them already. They flow much more than the stock versions. And I don't want to sell them for much less than I paid for them so I'm just gonna stick to em.

Twin turbos would be awesome. But I know it's gonna take much more tuning and electronics and the most important $$$. Lots of custom stuff involved in a twin turbo system isn't there? I know the super charger is bolt in get tuned and it's pretty manageable. I have a turbo in my other car and it's real finickey. It does what it wants and the computer is always pulling boost and I never get to hit the target boost level, even with meth injection.

but if anyone knows where I can get to looking at twin turbo set-ups I'd like to browse through it.

Payton King · #8 08-21-2009, 08:00 AM

You could pick up a complete 18 degree motor probably as cheap or cheaper than trying to build a shortblock for the 18 degree heads you have. I think my friend picked one up for $6500. Intake to oil pan, dry sump, bowtie block with the best internals made. Sell the stuff you do not need.

To spin a motor to 8000 rpm you will need all the best stuff anyway. I think you will find that is going to be an expensive motor to build and to make the power you want and it will be pretty ragged until about 3000 rpm...then hold on.

The tubo thing is going to be real expensive.

clay69camaro · #9 08-22-2009, 05:26 AM

Well the motor I was looking at was a 406ci little M block with
4340 forged steel crankshaft with double keyways,
Forged 4340 H beam rods with ARP2000 bolts
SRP/Pro True forged aluminum pistons with wrist pins, locks and oil support rails when required
File fit Rings include plasma ductile iron top ring, reverse twist 2nd ring and standard tension oil ring
Federal-Mogul or Clevite 77 rod and main bearings
Dart SHP 4 bolt (center caps) 350 Main Cast Iron Block
3.750 406 6.000 400 -28CC SRP/Pro True FILEFIT Dart Little M $4149.99

I think I would need different pistons, due to the combustion chamber on my heads, and I'll be going with a much more forgiving cam than what I have now but also one that would make good power with the forced induction. How does this build look like it stands up to the other motor? Better? about the same? or total crap?

Thanks for your previous tips by the way