AFR heads
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Cross-Country
Joined: Mar 2021
Posts: 57
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From: australia
AFR heads
Someone selling AFR 1381 195cc heads locally brand new , been checked over, valves clearanced for boost and Lunati springs and retainers fitted for Lunati solid rollers then put back in box. Also Lunati solid rollers and timing set for $3000 Aussie. Very good buy but will it suit my rather stock 351?
Mountain Pass
Joined: Sep 2020
Posts: 249
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From: Mid Michigan
Someone selling AFR 1381 195cc heads locally brand new , been checked over, valves clearanced for boost and Lunati springs and retainers fitted for Lunati solid rollers then put back in box. Also Lunati solid rollers and timing set for $3000 Aussie. Very good buy but will it suit my rather stock 351?
You usually have to notch the pistons with a 2.02" valve let alone a 2.05" valve. And the 195cc intake runner is probable going to hurt throttle response at lower Rpm's. IMO that head would be better off suited on a 408w.
https://www.airflowresearch.com/195c...ead/#prod_info
https://www.motortrend.com/how-to/14...-past-1000-hp/
Lead Driver
Joined: Apr 2007
Posts: 5,958
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From: Houston
Hard to say, I know 302/351w love the Renegade 165cc heads and I know many people running strokers that use the Renegade 185cc heads. I do know how ever that the Renegade 165cc heads are the ones you need if you have valve reliefs as the valves will clear but the larger heads you will have to verify valve reliefs are big enough or flycut the pistons for clearance.
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Cross-Country
Joined: Mar 2021
Posts: 57
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From: australia
Thanks for the replys, the motor has aftermarket pistons which I think are speed pro hypers with 12cc valve reliefs which I would hope would clear but I will have to check with the engine builder.
I checked the flow rates between the 185s and 195s and there's not much difference. The 195s seem to fall in an odd spot with a lot of strokers seem to go with 205s or 225s.
I checked the flow rates between the 185s and 195s and there's not much difference. The 195s seem to fall in an odd spot with a lot of strokers seem to go with 205s or 225s.
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