When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I'm rebuilding a 302 on a budget. I'm wondering what we be the most bang for the buck, since the bucks are limited. I'm thinking going stroker and staying with my E6 heads, or dump the stroker idea, invest in a set of good heads, cam, and exhaust, with .040 overbore, and stock crank and rods. I can't afford to get a stroker kit and a set of heads. Suggestions anyone? Going in a '73 F100 2wd pickup with 4.11 gears.
I suggest you stick to a .030 overbore unless you get the block sonic tested.The more you bore it the closer the cylinders get to each other without much more displacement. If your on a budget as I was I'd go with some good heads. Chances are your old ones need some work. That's more money you could put in the heads that you would have to shell out if you went with the stroker. It's much more cost effective to do new heads and do a stroker when your budget allows. Doing it stroker first and heads second and you will never get the potential out of the motor while your saving up for the heads. So get your heads, intake, and exhaust set up and call a few cam companies.
look into a 306 build mild but puts out some decent power if tuned properly. remember everything works together so going to radicle with a cam or to much porting on the heads can hurt performance.
A 306 is a 302 bored .030" over. I agree with both answers above mine. I've bored a couple of 302's over .040" without sonic checking with no problem, but that is pretty much max. Both engines did run a little warmer then an engine over bored .030". The heads help build more power on an engine then any other part. If you want to keep low end torque, stay with heads with a little smaller valves and intake ports. If you want to make more power and have a manual transmission, go with the bigger valves and matching cam. Your 4.11's will help make up for the loss of torque. Balance that 302 when you build it, have your rods resized and ARP rod bolts added, and have your crank polished and oil holes chamfered. That 302 will sing.
Plan on going to a good high volume h20 pump, and a oil cooler is not a bad idea. What about the radiator?
Some of the true high volume pumps are designed for a triple pass radiator. I'd try a new (not rebuilt) pump before getting one though. Some of them move the coolant too fast through the radiator. A shot of water wetter is usually good for a 10 degree decrease in temp too.