raph130 said:not that limited, theres a guy running 10.9 with stock intake heads tb, cam everything, its supercharged about 14psi makes almost 400rwhp. you can send it to Michael Yount, Idiot lane, Usa.
raph130 said:all it takes is better headers and aluminum heads to make a 400hp 302.
cleanLX said:Don't forget that 'stock' motor had prep'd cylinder bores, fancy rings, strip oriented intake/carb setup, ran 40" long primary long tubes designed to fit in a Falcon or something, had no accessories on it, no exhaust etc etc... and was tested on an engine dyno.
I cannot believe someone as astute as yourself would thro out a blanket statement like that without including all the info.
I also cannot believe, that you actually think adding a set of afr's to an otherwise stock 5.0 would add up to anything more than ~260hp.
Add intake, exhaust and fuel and you 'might' see 300 with the stock cam.
raph130 said:not that limited, theres a guy running 10.9 with stock intake heads tb, cam everything, its supercharged about 14psi makes almost 400rwhp. you can send it to Michael Yount, Idiot lane, Usa.
Michael Yount said:If you look closely at the MM&FF test there are three things that are important to note. First, they were on a mildly built 347 - not a stock 302. Second, there was virtually no difference AT PEAK (less than 1%) between any of the 4 they tested - 1 5/8ths unequal shorties, 1 5/8 equal shorties, 1 5/8 long tubes, 1 3/4 long tubes - all from BBK. Third, look more closely at the data and you'll see that the long tubes (1 5/8 were better than the 1 3/4) made almost 40 lb-ft more torque down at 3000 rpm. As MM&FF often does in their tech articles, this important detail went totally un-mentioned in the article, nor did they print the data (who knows if they conducted the test) for what happened at lower rpm than 3000..
Michael Yount said:However, I think long tubes properly sized will significantly perk up the bottom end which is great for street driving. If I were in your shoes and were looking for mild mods to an otherwise stock car I'd: 1) Add 1.5" primary long tubes, and 2.5" system (high flow cats or no cats -- depending on what your emissions situation is); 2) remove the silencer from the stock cold air box and put a K&N in; 3) put 3.73 gears in it; 4) bump the timing up to 14 initial, 5) get tmoss to port the stock lower intake. On an otherwise solid engine, those changes will make a significant performance difference without impacting drivability, and your around town mileage may actually improve.
TW0 said:I'll go w' those bbk ceramic longtubes and deal with the hassle of the install.
25thmustang said:After talking with a friend of mine who runs FS, he saw the same power from 1 3/4" shorties as he did from 1 5/8" long tubes. I would say when comparing aftermarket headers the long tubes on most applications will make more power...
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