im very new to the great ole truck scene.. ..and not a mechanic by anymeans..can someone explain matchporting to me ..how its done.. and if its something i can do..is it worth it.have unlimited resourses as far as equipment not much resources in FUNDS..lol..retired.

 

Are you are referring to cylinder heads/intake manifold? If so this matches up the shape/size of the intake ports in the cylinder head and the ports in the intake manifold where they meet. Various different methods. one is to take the intake manifold gasket line up the bolts holes in the gasket to bolt holes in intake manifold, mark(magic marker etc) the manifold, take a grinding tool grind out the excess so that hole in manifold perfectly matches hole in gasket, do the same to cylinder head, then polish out rough grinding stome marks. This gives you an uninterrupted smooth flow. Usually you go ahead polish out intake passages with smooth grinding tool, CC heads etc. There are other methods that are more precise. If this is a fairly stock street engine the benefit is not worth the effort. If you are going racing every little bitty thing counts/

 

thanks for the reply..yes thats the way i heard it done also..i have some extra 302 heads gona do it heck my time is free..i just wanta burn rubber lots lf it..lol..take care..

 

Porting alone won't give you that much gain, if you already have 4v heads and 4v intake, then it'll help more but what you need besides porting is larger valves to let the motor really breath along with a 4v high rise aluminum manifold, high performance cam to match and at least a 600 cfm carb to fuel the beast and equal length headers, then it should breath just fine.

 

wooooohoooo..great reply bob..looks as if im headed in the right direction have the edlebrock performance package in motion..the carb and intake and cam are all here... waiting for the heads now..or should i tell the truth waiting for the funds for the heads..lol..now i heard good stories about the benifits of cast-iron headers..your thoughts..

 

Had a 66 Mustang 2+2 with hi-po 289 with factory cast iorn header type exhaust. No gasket blowout/leak problems. Probably did not perform as good as regular headers would have. Dont know what else is out there in cast iorn headers.

 

The edelbrock performer package is a good choice, are you getting the single plain or duel plain intake and what duration and lift cam are you planning on using? I have a 72 302 in my 54 and it has the edelbrock torker single plain but the duel plain is a better street intake and my cam has a 287 duration with a 464 lift.

 

i have all three now starting at the top the Edlebrock performer carb pn#1405 intaKE PN#2121 and the cam pn#2121..said the duration @ .006 lift was in 270 x 280.lift @cam intake .280 ex .295..lift @ valve intake .448 ex .442...i was gona get the heads next but have a very good lead on some 351W reconditioned HOT AND READY TO GO.any thoughts on a timing gear set up..i like the sound..and dual ideler or single...im working on the porting now wow feel like a jewler..so careful..thanks for the reply ..

 

opps made a mistake..its .472 on the lift @ valve on ther ex valve instead of the .442 i typed..sorry wear my glasses next time..

 

I saw a timing gear setup in either Speedway or Summitt catalog that looked interesting, used 4 gears. Very precise. Part I liked could order in quiet or blower sound. Always liked that gear whine noise that blowers make. That sound certainely makes me look to see whats going by!!

 

Well if you're going with edelbrock you might as well stay with edelbrock, their timing gears cost more than other brands, a friend of mine has a 79 corvett and he put on edelbrock intake, carb and timing gears and it does have a nice sound, it turns my head every time I hear him coming.

 

if you're just going to port-match, it probably won't do much for you. if you decide to get adventurous and do a full-boogie homeport job, then you'll really have some fun. as far as the larger valves, they are not a requirement. true, they will dump more fuel and air in, but the velocity slows down, and that is equally important. using stock size valves with a mild home-port job is a common thing in the mustang world (i just left there recently). this website has some good infor about the gT40p heads that have been gaining popularity recently in the 5.0 crowd. my point is, if you're doing any work on your heads, you don't have to use bigger valves, in fact it may be a step backwards.
http://www.geocities.com/motorcitymustang/gt40p.html

Jared