Thread: 1969 302 help

Tweet

Good score Bobby.......build that thing. I have exactly the same set of heads that I ran on my 302 in the 27 for years. Good breathers, big spark plugs, some consider these to be the best of the oem small block heads of that era. Here is a site that has more info for you.

http://www.raceabilene.com/kelly/hotrod/engine3.html

Don

Don did you change the stud mounts to screw in 3/8 s or leave the 5 /15 pressed in , in them .

It had a mild cam so I just ran the stock studs and rockers. The whole engine was pretty tame, but I installed these heads after the car had been on the road for a while and could feel the difference in performance. I was actually going to run them on the new motor but weighed the cost of having a good valve job done on them and decided to go with aluminum ones just because I never had owned any. But the early heads really are pretty good.

Don

Thanks Don for helping with your experience .

Bobby - I ran those heads on a 351W but did change to screw in's. I really is very easy. Pull the studs, run a taper, plug and bottom 7/16" tap carefully down the existing and correctly sized holes, bolt on your stud of choice to match the rockers of choice and you are done with stud pull worry. While you are doing that, look in the exhaust port. If there's an EGR hump, clean it out with a die grinder and burr to level with the port floor, forget about any EGR hole as it will be not a problem as well as doing any fancy port work unless you have a flow bench. The port clean out will make a tiny performance difference as well as help gas mileage a wee bit.

Originally Posted by IC2

Bobby - I ran those heads on a 351W but did change to screw in's. I really is very easy. Pull the studs, run a taper, plug and bottom 7/16" tap carefully down the existing and correctly sized holes, bolt on your stud of choice to match the rockers of choice and you are done with stud pull worry. While you are doing that, look in the exhaust port. If there's an EGR hump, clean it out with a die grinder and burr to level with the port floor, forget about any EGR hole as it will be not a problem as well as doing any fancy port work unless you have a flow bench. The port clean out will make a tiny performance difference as well as help gas mileage a wee bit.

Dave Thought the valve seats would be the biggest issue . Your stud replacement sounds like a good one .