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I'm considering purchasing some AFR cylinder heads for a 383 that will be a street/strip engine. About how much bottom end will I lose using the 195's over the 180's? I have not decided on a cam yet. Compression around 10:1. I was looking at Lunati's voodoo series cams, duration @.50 233-241, lift .504-.525, Lsa, 110-106. 2200-6400. All opinions appreciated.
 

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Afr's

I have the comp ported 195s on a 355ci/10.5 comp mtr and have no bottom end problems at all. I just switched to a pro products Hurricane single plane intake and it pulls even harder:D . I would have a cam ground to your cars specs and you Will be very happy.I went with a Cam Moition hyd roller cam/comp cam roller lifters and AFR rev kit.
Afr's new head should out flow my cnc comp ptd heads.

Chris
:chev:
 

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Thanks Chris, I would like to go with a hydraulic roller cam, however $1200 for a comp roller cam, lifters, pushrods, retainers, and springs is not in my budget right know. So I have to settle for a flat tappet.
 

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I would say definatly go 195 heads, this gives you more room to grow also. i would also recommend more duration for a solid cam something like 240-244 @.050 and 525-540 lift. The cam you chose is a real torqe monster in a 383 though if thats what your looking for?I just think you could really use more cam with those killer heads!!
 

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i have those heads and went with a lunati 243/251 .551/.565...this was recommended by harold at lunati, great guy, he was/is their lead cam designer for not only them but ultradyne...ummm and some other companies...i recommend him highly...Harold Brookshire, call him at 662-892-1500 extension 1135
 
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