what cam kit should i pick for my 302 mav cam kit = cam/lifters/springs/timing chain motor mods - STOCK 72 mav 302 / gt-40 heads / 289 performer intake / long tube headers / T-5 trans / 12 pound flywheel / stage 3 clutch / powerfire dist / 600cfm edelbrock carb / should i have the stock gt40 heads taken down ? if so how much / got them at pick n pull from a 96-97 mountioner (should i port them ?) should i buy a beter intake if so what one would you buy i have 3.25 rear ratio but will get 3.89's or 4.11's when i find a good deal ? i have a 25$ off when you spend 150 at summit and i got some cash
what do you think of this kit http://www.summitracing.com/parts/CCA-K31-238-3/?rtype=10 i just dont want tp waste $
If you have the 72 pistons, then you're going to see some compression drop with those heads. If you're going to to it, look at a cam such as a Comp 268H which is designed to work in a low compression motor. As for an intake: Performer RPM, Weiand Stealth, Ford A321 will do you no wrongs, in other words, any of the high rise dual plane intakes are a great choice. The Performer 289 is a slightly(very slightly) improved version of the stock Ford 4 bbl intake.
How much should I have the heads surfaced to bump up the compression maybe soothing like 9 to one or 10 to one
What is the car going to be used for? (did I miss that answer?) That cam will give you a lumpy idle, high peak torque rpm and still only pull to around 6000 rpm (peaking 600 - 700 rpm before that). Way too much cam for the rest of your engine. You need a 204 - 214 duration (at .050") with less than .5" lift to match your manifold and heads. If this is a street driven car then all the components you have will work but you need a milder cam. The 5 speed is a good idea as long as you won't be using it for a drag car. I hope you don't expect any economy with it. If you port the heads are you going to do it or will it be done by an expert because you can screw them up fast if you start grinding the wrong area. At the skill level that you seem to be, I would recommend balancing the engine, using 9.5:1 pistons, a 214 duration cam with no more than .488" lift and lobe separation of around 112 - 114 degrees. Leave the heads stock unless you pay someone to do them and keep all the components you have. You will have a strong engine with good street manners that will last for years properly maintained.
That's not going to be possible. You can gain maybe a half point in ratio by milling em .040, that'll get you to 8.5. To get into the 9-10 range, you'll have to change pistons. .
