Hi Guys,

I'm building my first stroker motor, gen 1 sbc. It's a 30 over bored 350 (0010 block) and my rotating assembly is a Scat stroker crank, GM truck rods (X designation) and cast 0.030 flat top pistons. All with H series bearings. With the flat top pistons, my engine guy recommended a 200cc intake runner head with no less than 70cc combustion chambers. I had people suggesting the new E-210 heads from Edelbrock, which look good, but they only have 62cc combustion chambers, so I think my CR would be too high. So, i'm asking for suggestions for heads that will work with my set-up. To alleviate questions, I'm going to use Lunati's 60103 cam. Really appreciate the suggestions guys, thanks in advance.

 

You can bleed off some of the compression with more cam (valve overlap). It will sound better and hit harder with more compression. A trick we would do way back when was if we were spinning too much off of the line we would get a bigger cam untill tire spin was under control. This also helped top-end of course.

 

Thanks very much, that sounds like good advice. I will look into the next size up in cam (Lunati 60104). If I have to go with a stall converter anyway, why not go bigger? Thanks very much.

 

Is this fuel injected or carbureted? You could call Lunati and ask them for their opinion before you decide to order anything. Harold did a great job on Lunati's stuff.

 

What stroke? 3.75"? Id go 195-210 cc and lunati 60104 and 3000 stall. Pump gas safe would be 10 to 1 comp and that would be 72-74 cc heads. 64-65 would give 11 to 1 or so and need to watch the tune on pump gas. Doable but more risky with todays gas.

Heads i like profiler 195 or 210, afr 195-210's and dart pro 1 200's. Order them in the 74-76 cc chamber range and shave down to 70-72 cc and run next size up cam

 

Thanks very much for everyone's advice, this is very helpful. Is 3000 stall going to be difficult to drive on the street? The heads undoubtedly have to be in the 200cc range, and the 70-74cc range. Thanks very much.

 

No not at all. I daily drive 3200 and summer drove 3600 no issue. Its not bad with todays converter tech and lockup trannys if you have the 700r4 4l60e type stuff

 

4200 in my car. Don't go cheap on a converter. I'd argue that a GOOD converter is equally as important (if not MORE important) than good cylinder heads. Buying it twice isn't cheap.. been there, done that.

 

Thanks very much for the advice. I talked with the guys at lunati, and they said for my set-up and goals, I should get the 60103 cam, which is .489/.510 lift and recommended with a 2000rpm stall. I'm good with this, I can make over 400 horse with the right cylinder heads. Which brings me back to the heads...It's really too bad the edelbrock e-210's don't come with 70cc chambers or higher, because they really seem like the best deal. I have however looked into the Brodix Ik 200's and they also seem like a good deal (and come in 64 and 70cc combustion chambers, imagine that). I've been told a lot about E-tec heads, but again, they don't come in 70cc (as far as I can tell) What's with Edelbrock? Got something against lower compression? Anyway, I'll take all the suggestions I can get for good heads with 195-215 intake runners, and 70-74cc combustion chambers. Thanks very much!

 

Just came across these from Trick Flow
Trick Flow Specialties TFS-32410001-C03

These are 230cc intake runner and 70cc combustion chamber. called their super 23 model for small block chev. They seem like a really good deal for that price, but my question is: is 230cc intake runner too big on a 383? Am i going to be running too much air and not get enough torque? I'd be really interested to hear if anyone's running these. Appreciate your thoughts guys, thanks.

 

Way too big for what youre doing .
Stick with the 190-210 max size

Running 230s on a 383
To get it to work need gear a lot of compression single plane and a big solid roller. Even at that I think they are still on the big side and dont really start working til about 5000 rpm

 

Look at the jegs/profiler heads i believe they have a 70 something cc available and are cheap

 

I do think DCR's are a band-aid repair for a poor choice of parts for the intended use.You either match things up or don't.Aluminum heads with a .040 head gasket is the limit at 10.5 compression on today's 92 octane gas.And don't forget the bigger you go in heads,the higher the rpm range will be for the torque curve to begin.So you built a stroker and then want to feed it on the top end of the engine,but it doesn't make logical sense to have that start at 3,000 grand because you could count in a yr(short of track racing it)on one hand the number of times you really got to use it on the street unless you go nuts with rear end gearing.My point is the strokers are known for torque and that is the reason for building them.That should be right off idle where that torque curve begins in big numbers in order to make the investment in the stroker worth it.Other wise why even brother??. Guys I am talking strictly for the street before you get your panties in a bind.

Did you buy the pistons/rods already?. There are good sets of dished pistons out there that would open up your choices of heads...............Oh yeah,don't waste your money of full floaters.They do nothing for you other than allow you to change pistons easily.They also add to another part to wear out in the rod small end.

 

yep got the pistons and rods already. GM truck rods (X designation) and 0.030 over cast flat tops. 230cc is way too big I understand. Now how about the other side? Edelbrock also makes the Performer RPM model for the original SBC with 185cc intake runners and 70cc combustion chambers. Anyone running these heads? especially on a stroker? I know that the smaller runners typically give higher velocity through the heads and will often yield great low end power and throttle response. Just was hoping to hear if anyone is running them and it's not enough on their 383. thanks.