AFR heads
#1
Melting Slicks
Thread Starter
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
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
#2
Race Director
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.
The raised port is the exhaust port FWIW.
#4
Race Director
Oh yeah, and the motor also runs a lot better...
#5
Safety Car
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?
Last edited by Doug1; 11-05-2012 at 07:31 AM.
#6
Race Director
.100 raised exhaust port. The heads sit @ a 45 degree angle so the headers raise higher .050 above the road.
#7
Melting Slicks
Thread Starter
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.
#9
Melting Slicks
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
195's might be too much for a stock'ish L82
Maybe find a good used pair ?
Everything bolts RIGHT up
#10
Race Director
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.
#11
Melting Slicks
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
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
Last edited by Fast81; 11-05-2012 at 02:57 PM.
#12
Safety Car
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.
#13
Race Director
#14
Safety Car
#15
Melting Slicks
Thread Starter
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....
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....
#16
Race Director
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.
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.
#17
Burning Brakes
Member Since: Feb 2011
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What he said;
And 190 ARF heads will be to small.
Ralph
And 190 ARF heads will be to small.
Ralph
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.
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.
#18
Team Owner
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St. Jude Donor '05
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....
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....
180s will work real well on the avg L48 L82
#19
Burning Brakes
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#20
Race Director
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
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