Ant
Well-Known Member
If ya want gobs of air and want to look cool, go with triple predator carbs.
That would work as well, but not well on a 318 with a back yard, rabbit turd overhaul the Op is planning.Skip the 6 pack and get a tunnel ram.
Totally agree.Never understood why folks look down on a 318. If a 302 ford and 327 Chevy can make power why not a 318? Yes it has smaller heads (in most situations) Low compression (unless you got an early one) and probably has a 2 barrel intake and shitty exhaust manifolds (performance wise) but rebuild it and as said many time will make power, just at a higher RPM than the 340 and 360.
Put the 6 pack on, be happy, if its functional.
Bore size will have an effect, on 2.02" or small valves probably not gonna make huge difference especially at the power levels (cfms) most are trying to get out of a 318 250-400 hpK, i do have a question and this is just a question not an attack.... a 318 is pistons and a crank, if you put on good heads/cam/springs that's the same as you do on any motor to spin rpm, what is holding a 318 back from high rpm compared to a 340 if cam/heads/springs are equal?
yup, was mainly talking RPM though.. Dart had said the 318 wasn't made for RPM... which is true but doesn't mean it can't pull RPMBore size will have an effect, on 2.02" or small valves probably not gonna make huge difference especially at the power levels (cfms) most are trying to get out of a 318 250-400 hp
no frett'n about the port size. not a problem.What about the port inlet size mismatch with the 318 heads? Assuming the OP doesn't put 360 heads on it.
Wasn't made for rpm cause they put a 273 2bbl top end on it, no reason you shouldn't be able to build a 8500rpm monster if you want, the bore is only slightly smaller but also is feeding less displacement.yup, was mainly talking RPM though.. Dart had said the 318 wasn't made for RPM... which is true but doesn't mean it can't pull RPM
318 wasn't "made" to turn rpms because it didn't get the "good parts" like a 340. I've seen 318's turn 7200 rpms for years with stock bottom end. 340's havent' been made for over 50 years, folks are working with what they have or what they can get. It's ridiculous that we can't get past that 340's are no longer in the junkyards for 75 bucks and 318's swap cams and heads and pistons just like ANY other engine being built, including the 340's. Yes, I'd rather have the 340, but no, I'm not paying the "340" tax.yup, was mainly talking RPM though.. Dart had said the 318 wasn't made for RPM... which is true but doesn't mean it can't pull RPM
I bet if the factory made a performance version of the 318 during the muscle car era we wouldn't be having these discussions. For some reason people have a problem not seeing an engine as a performance engine if there was not a factory one.318 wasn't "made" to turn rpms because it didn't get the "good parts" like a 340. I've seen 318's turn 7200 rpms for years with stock bottom end. 340's havent' been made for over 50 years, folks are working with what they have or what they can get. It's ridiculous that we can't get past that 340's are no longer in the junkyards for 75 bucks and 318's swap cams and heads and pistons just like ANY other engine being built, including the 340's. Yes, I'd rather have the 340, but no, I'm not paying the "340" tax.
It's like, 340's were limited in years of production, and considering only a few produced, and haven't been produced in over 50 years, and folks throw it out there like they are in every junk yard for 100 bucks in running condition...... lolI bet if the factory made a performance version of the 318 during the muscle car era we wouldn't be having these discussions. For some reason people have a problem not seeing and engine as a performance engine if there was not a factory one.
Here in Canada people asking $1500-2500 for just a rusty 340 block, a complete engine in need of a rebuild $3000+.It's like, 340's were limited in years of production, and considering only a few produced, and haven't been produced in over 50 years, and folks throw it out there like they are in every junk yard for 100 bucks in running condition...... lol
This. There's no fundamental difference beyond an AVS or Thermoquad. You might not use all of the six pack, but it'll run!Truth is the 6 pack has 2 of the carbs working off of vacuum.
and for what 3.3% bigger bore diameter.Magical artifacts don't come cheap....
and for what 3.3% bigger bore diameter.
I technically agree, if cost and availability was no object.I'll take a 3.3% increase in bore size every day of the week and all day Sunday.
And I agree again technically, I see displacement as cfm (cid x rpm x ve%) who cares what an turned off engine displaces what's important how much air is it displacing over time. But seems most don't want to run more than 5500-6000 peak hp rpm on the street and most don't seem to want run deeper than 3.55 which basically leaves more cid to make power at 5500-6000 rpms.Until the world is re-educated about displacement and RPM you will see guys building stuff with inverted power curves and calling that "magic".
Richard Holdener considers anything that makes more torque than hp a milder engine.you will see guys building stuff with inverted power curves and calling that "magic".
Richard Holdener considers anything that makes more torque than hp a milder engine.