Before sending the 302 block away to get set up for a .030 over bore and building it. what would be a good set of heads for the build. the truck is an 84 long box 2wd, is intended for toying around town and playing on the highway. truck will never be towing anything or used as a truck at all. so my transmission is a c6 with a shift kit and high stall. my rearend is a 9 inch ls with 4.10s. how would you build the 306 for it? and whats the scoop on these cylinder heads?

302/351W FORD RACING "SPORTSMAN" SHORT TRACK CAST IRON CYLINDER HEAD | Part Details for M-6049-N351* | Ford Racing Performance Parts

 

How would I build a 306? I'd start by putting a stroker crank in it to bring it up to 347 cubic inches, then I'd mount some 170-180cc performance heads on it, install a nice roller cam and add longtube headers. For heads the new TFS Fast as Cast are a really good deal and 170cc is plenty for a street going 302 or 347.
http://www.summitracing.com/parts/tf...view/make/ford



Thay're monsters but by the time you get a valvetrain in them you will have spent more than the fully assembled TFS heads above are worth, and on a 302 you'll have to spool it to 8000rpm to get any power and that will also require an expensive forged rotating assembly and a solid lifter cam.

 

Ive seen them fast a cast ones. Whats the power output expected out of those? Are thy better than the gt40s what intake and cam do you suggest for them heads? I dont mind making most of the power top end either! Id like to stay away from stroking it now. Just because id like to build a ba *** top end first

 

There's nothing wrong with a set of GT40 heads and a good cam for a 302. Building a Hi RPM 302 for a truck even with the 4:10 gears and the high stall C6 and not stroking it is just not smart. Why not get a late model 351 and build that. Try to find a roller block while your at it. Most of your 302 bolt on parts will swap over and what doesn't can be scorced from another 351. It's cheaper then a stroker kit and the extra weight of the 351 is never an issue in a truck.
Then you can go back to a more normal stall TC and enjoy better performance and still get OK MPG.

 

Well i dont have the coin for stroking it yet. Thats why i asked whats a good top end for my combo! That way i can stroke it later! But i may call and get a quote And see what a 331 bottom end is worth at a couple local shops! Wht would the gt40s be like on a 331 bottom end?

 

Need heads for a 302?

Aus Ford Parts - Aussie 351 Cleveland Specialists

Austrailian 302c heads. Cast iron. 64cc chamber. 2.04 int 165 ex. valves. These are the austrailian 302c(351c) heads. Ford made destroked 351c engines until the 80's in austrailia. The heads have massive intake and exhaust runners just like the 2v 351c here in the US. But the 302c heads are closed chamber for better combustion. You will need a boss intake for a 302 as well as exhaust with cleveland pattern. Putting these on is no different than doing a "clevor" windsor family block.

Im currently building a 351c for my truck. Im using the us verson with open chamber heads which are 76 ish cc.

 

Don't bother with a 331, with trucks torque is king and it won't cost any more for the larger kit so go all the way to 347 if you're gonna do it at all, there are no oiling or wear issues with this displacement anymore that has been conquered years ago.

 

So for the time being buildig the 347 bottom end and topping it off with gt40s til i can get the trick flows. Whats the power output of te 347 with gt40s

 

With a 260 duration cam... 300-330hp and 380-400tq.

 

Just me, but why bother with the expense of a 347 when a 351W will bolt right in place of a 302 ? I can see it when the engine bay is tight, but that's not the case with an F series. I think you're wasting your time with a 302 inan F series

 

Well than the argument of why bother with a 351 when a 460 is available comes to mind. I was basically goin 302 because i already had a few of them! But everyone is saying go bigger

 

A 460 isn't a "bolt in" though, is it? That's why I mentioned the 351 option. You can go grab a good roller 351 from a pick-& pull, take it home, replace the topend and the cam with a carbed setup (heads too) and have a great runner with more HP and torque for less than you'll spend rebuilding a 302. 302's were just never had the power to push a full size truck (like they should), nevermind the fact Ford put em in there, that's beside the point.

 

Well now im just confused on what to do hahah. I like te idea of a fast little truck and i always thought that a 302 would get the job dine for a quick truck just not a good truck for towing

 

The 302 can be fast, there's a guy on here with a 5.0 truck that regularly spanks 351 Lightnings at the dragstrip, it's got heads, cam, intake, and 4.56 gears!!

 

Now thats what i want to hear haha