| Re: Driving impressions with the AFR heads |
Subject: Re: Driving impressions with the AFR heads by TonyMamo on 2009/8/18 17:08:18 Quote:
No... That's neither reasonable or remotely possible. Reasonable is paying about $30-$40 per horsepower in most mods you do in an attempt to increase power. Once you have a stout baseline count on that figure per pony doubling....the stronger your baseline, the more it costs to increase your power output and its an X-squared curve of sorts working against your pocketbook. A three MPH increase in trap speed in a 3500 pound car requires about 35-40 additional HP. The AFR heads in this test cost the same or less than the ported TFS head he is comparing them to, but even if they were $500 more it would be well worth the money (assuming a three MPH gain) because Josh would have only spent less than $15 per pony....thats a Walmart blue light special for the power gained. Expecting/hoping for a 119 MPH trap speed to potentially see 130 (and mentioning "reasonable" in the same sentence) would require an increase of 140 horsepower over a baseline head that costs about the same as the AFR we are comparing it to. All costs aside, I dont think ANY headswap could ever be expected to produce or achieve those types of results even if the baseline heads were bonestock emissions heads (although I have seen some AFR heads approaching an 80 HP gain over a weak stock headed baseline). Its all about value and if you determine value based on HP per dollar (which is the only way you should be evaluating it) the AFR's will shine whether your comparing them to a $800 budget set of stock heads or more expensive set from one of our competitors. Lastly, none of the AFR's are as cast....they are all 100% CNC ported which is where some if the value inherent in their purchase is derived from, but that is only one of many perks. Anyway...gotta run but needed to quickly bring this thread back to reality -Tony |
