NEED HELP! AFR 195 or 180? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 09-06-2010, 02:43 PM
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NEED HELP! AFR 195 or 180?

Hi my name is Mark. I'm building a 383 stroker with all forged internals, roller 4 bolt main block and a comp cams Xr276HR roller cam. I plan on using my edelbrock Air-gap and 650 race series proform dp carb. Regardless of which heads i use i need the bigger size combustion chamber (75cc) to yield a 10.3 to 1 compression. My question is what would best fit my app the 195 or the 180s. by the way the motor is going in a 84 el camino with a 700 r4 with 2600 stall and 4.11 gears. Thanks for your time Mark

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Old 09-06-2010, 03:13 PM
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How is it going to be used, street or strip?


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Old 09-06-2010, 03:16 PM
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85% street but maybe a couple 1/4 mile passes.
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Old 09-06-2010, 08:28 PM
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The port design of the AFR 195 head is much better than the 180. With
383 CI the 195 will work great.
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Old 09-06-2010, 09:44 PM
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I wold likely lean towards the 195 as well. That is one nice head. I have a set and I love em.


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Old 09-07-2010, 12:18 AM
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Head runner size is kinda like selecting a cam for 90% of the people, they should have chosen the 'one cam up' from the one they really chose.

I'll go against the grain here and say the 180. Are you REALLY gonna take it to the the 1320? If not, I would take the smaller runner all day long.
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Old 09-07-2010, 08:55 AM
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Ive been leaning toward the 195cc but do you guys think it will match my cam?By the way my cam is the xr276hr from comp 224@.050 w/503 lift on intake and 230@.050 w/510 lift 110lsa
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Old 09-07-2010, 04:37 PM
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I'm wondering how you expect that 700 R4 to live behind that engine? Especially taking it to the strip!
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Old 09-07-2010, 04:45 PM
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Go with the 195's on your 383. If you decide you want more power later, just swap the cam, heads will be good to go. With the 180's if you want more power you may have to replace heads and cam.

Horsepower is like crack, you'll never be satisfied for long, and find you need a bigger hit to keep going.
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Old 09-07-2010, 06:07 PM
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The small cam will work great with the 195 runner heads. AFR revised the
design of the 195s but not the 180s. The revision is a huge improvement
over the prior design, you will be making a mistake with the smaller head.
They 195 will work just fine. If you chose the 180 port, you will be down on power
compared to the same engine with the newer port design.

Some people will tell you the larger runners will result in a loss of torque
at lower RPM. The 383 you describe will have so much torque with your
combination that traction will be the problem, not a lack of torque.

Call Tony @ AFR, he will help with the decision.
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Old 09-07-2010, 08:48 PM
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my 700r4 is built to 550hp! My drivetrain can take it, ford 9 inch rear with 4.11 posi, steel driveshaft,and 1330 u-joints. I'm just wondering if the 195 are too big but from the replys i guess im wrong. Im pretty set on get the 195s after what you guys have said. If anyone is selling a set of afr 1036 please reply. Buy thanks for the help fellow hot rodders!
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