here's a couple of pix, the first should be of stud mount if I inserted the images correctly, and the second are pedestal mount rockers
I'm not sure how this post works so hope this is ok. My motor is a 331 edelbrock heads, not sure if they are performer or rpm's and don't know how to tell, edel. rpm manifold, edel. 600cfm, b303 cam. And it's not very fast so where I'm going with this that I want it faster. Thinking about AFR street/strip heads, f303 cam and a 650cfm. When I look up the parts they ask if it is a 1986 motor because it is somehow taller, shorter sometghing like that. So I thought first I have to know for sure if it is an 86?
There's only "3" types of rockers because the two different types of stud mount rockers are known as rail and non-rail rockers. The important part to know about them is that rail rockers are stud mount but not adjustable. And '86 engines need pistons notched because they have no valve reliefs...at all. And, if memory serves, they actually are above the deck by a couple thousandths. The '86 engine is NOT taller or shorter, or anything like that...just different pistons and heads, but since you have aftermarket heads and you have a 331 stroker all that information is completely irrelevant.
Edelbrock aluminum sbf heads are either stud mount or pedestal mount. If you have RPMs, they will say it on the ends of the head...it's engraved and it'll say Edelbrock in script, then Performer, or Performer RPM...then there should be a model number, and if you have Performer 5.0 heads for example, they'll have a CARB E.O. number...just take the number and cross reference it on the Edelbrock site, or through Summit or Jeg's...and you can find out what version of the heads you have.
When it comes to being "fast"...define what you mean by that-is it a dog? Does it not run as fast as you want? How fast is fast to you? 11's? 10's? If you have a well tuned 331 with Edelbrock heads and a high rise dual plane intake (Edelbrock RPM), then your problem is probably because the carb is too small or jetted wrong...you might have other tuning issues, you said nothing about what kind of transmission your running, or what rear end ratio, what size tires, exhaust, ignition timing...
Basically your information is very vague...you need to define expectations and a goal. I've seen and ridden in stroker powered cars with similar builds that were absolute turds until properly tuned-this applies to carbed vehicles too-not just EFI fed versions. But, a good running 331 in a little '66 ought to move down the road rather smartly if the car is configured correctly. The cam, by many standards, is pretty old tech and probably isn't the greatest grind for a stroked 302, but nonetheless it should make decent power up to about 5500 or so...
Can you reply with a better idea of what all you're working with? And please disregard the whole '86 thing...your combo is already built and its a moot point that doesn't affect you. 331 means that you have aftermarket pistons that will already have a proper amount of valve relief for pretty much whatever you wanna run. I can't think of a set of 331 slugs that don't have enough relief for at least a .600" lift cam.
Apples and oranges man...big block v. small block. Also, you're rocking a 2.90 rear gear? Waaaay too tall a gear. The 8" can take some abuse, it's like a small 9"...throw some 3.50-3.90:1 gears in there and prepare to start buying more tires. A couple of other questions:
Is there anything done to the carb, or did you just install it straight out of the box?
What kind of exhaust are you running?
How much initial timing/total timing/when is it all in?
What size pipes are you running? (I'm guessing duals here...)
Combo optimization is the key here...you don't have the cubes like your old TA, so unless you throw on a bottle, it's likely to not be as fast, but if you match all the pieces up correctly, you'll have a quick and fun car to drive.
Get a rod and jet kit for the carb, or a different carb you'd be more familiar with, play with the timing. But don't expect much noticeable change until you get those gears changed. As far as the cam being mild, yeah, a B cam is pretty mild, but it should still lope a little and if you want to get a little more lift out of it, you can buy a set of 1.7 ratio rockers if they're not already on there...it'll give you another 0.030" lift...
I bought a 331 stroker for my 66 vert. It's my understanding that a 86 302 is a little different than the 87 and newer. So is there an easy way to what year the eng. is with the eng. in the car? Also what does pedistal/stud rocker mean and how do I tell the diff. or what do they look like. Thanks
I'm not sure how this post works so hope this is ok. My motor is a 331 edelbrock heads, not sure if they are performer or rpm's and don't know how to tell, edel. rpm manifold, edel. 600cfm, b303 cam. And it's not very fast so where I'm going with this that I want it faster. Thinking about AFR street/strip heads, f303 cam and a 650cfm. When I look up the parts they ask if it is a 1986 motor because it is somehow taller, shorter sometghing like that. So I thought first I have to know for sure if it is an 86?
I am on the edil. site now under 5.0/5.8 heads and it states that "86 need pistons notched and will not accept rail rockers" So now there are 3 types of rockers. As you can tell I don't know that much about the sbf. I do have a few pontiacs though, there easier. Thanks for all the help.
So why not install a F303? and a 650 cfm?
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