AFR heads
 

I am considering a set of AFR 190cc heads for my L82. (Which will become a 383 this winter) Id like to install the heads now, and then reuse them on the 383 build later....

Two questions... are the 2.05 valves a "bolt on" with the factory flat top pistons, or do they really require machining?


The specs also mention raised ports....I assume that means intake, so will my Performer intake fit without modification?

Thanks

Are you buying used AFR 190s or new AFR 190s? The new AFR 190s are a vortec pattern, not the older smallblock pattern. I'd go with 195s (or larger) if I was making the choice.

The raised port is the exhaust port FWIW.

FYI,

One thing to concider is the accessory brackets (PS). If I remember correctly they have to be modified if you use these heads.

I'm running older AFR 195s on my 78. One of the A/C bracket bolts was hard to mount, but that's the only issue I had.

Oh yeah, and the motor also runs a lot better... ;)

so to help clarify and from other reading, the headers(or exhaust manifold) will sit higher in car, which could be a nice bonus. especially for people like me with full size headers scraping large bumps, etc. How much higher is it? even worth mentioning?

.100 raised exhaust port. The heads sit @ a 45 degree angle so the headers raise higher .050 above the road.

I guess the 190s are Vortec...its the 195s id like to use....but only if they will plug and play with the stock L82.

Email AFR with any inquiries, even if you're looking at a used set, they'll be happy to help you out and answer all of your questions. Good guys.

AFR 180's will work with both dispacements - from their website.
195's might be too much for a stock'ish L82
Maybe find a good used pair ?

Everything bolts RIGHT up

I disagree on the port size, although if he wants it to run well on the 350, he should use the 64cc heads. Going with the large chambers will kill CR and not run well with the L-82 cam. (ask me how I know.)

Actually, the large chamber and an 0.015 gasket would probably do all right. I'd be building towards the next motor, not the current one. Otherwise you'll end up buying twice.

Maybe - I was just going off their website Dyno examples of Both a 350 & 383 using 180's with 9-9.5CR's

350: 430-450HP/470TQ (Cam dependent)
383: 460-480HP/515TQ (Cam dependent)

Also the reason i picked the 180's : room to grow down the road

well, I drank the rest of the beers in fridge yesterday, so I can't blame that for my ignorance, those numbers are like, let me get out my micrometer kinda numbers? correct? cuzz .5 would be a half inch.

Right, Spark plug gap type numbers.:D

crap, well they(city workers) better start grinding down the speed bumps around where I live!:rock:

Oh, def going 64cc chambers.....

Just concerned about valve/piston clearance....prefer bolt on..dont want to machine the stock pistons at this time...maybe a thicker head gasket would be safer.

Thanks all.

There is a used set of 180s in SanFran on Ebay for $800, but have some damage to a chamber from a broken valve.....not getting a warm fuzzy....

If I were closer to building a new engine for the 78 I'd probably let my pretty much perfect 195s go, I want to get the new eliminators. But I'm at least a year out on that.

I wouldn't be too concerned about P/V clearance. Odds are your heads are about 025 in the hole, so an 015 gasket would be fine.

195s are not too big for a 350, and will be a small-medium on a 383.

What he said;
And 190 ARF heads will be to small.

Ralph

Youd have more in them after buying and fixing than a new set
180s will work real well on the avg L48 L82

He'll be putting them on a 383 later.

R~

I think we can all agree buying a damaged set of heads is f'ing crazy, don't mean to insult you just trying to avoid the post " Bought AFR's off Ebay and they are junk "

Save up some coin and get the AFR195 Eliminators, no there not to big for a 350ci my friend wanted to put 215cc Vic Jrs on my 350ci and would have worked, it's all in the parts selection and how you are at tuning ( BTW) I had them CC'ed and they came out 219cc intake. Made 550HP on my gone but not forgotton 406ci.

Should have kept that motor it had over 400 ft/lbs at 2500RPM at the rear wheels. As HP per dollar in the 550-700HP small block range is crazy. I spent another 10 grand to gain 50-75 more HP with 427ci small block but it was the motor I always wanted to build :thumbs: