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Thank you Very much!!! for the formula

Thanks to everyone, I will call Comp and find out what the intake lobe center line is and the exhaust lobe center line is for grind XR286R 383-440,

This is an example of the information I am looking for. My first post has the solid lifter grind I am asking about.

Thanks, I have the valve timing as well its on the comp page. but i still don't have the advertized int and Exhaust lobe center angle

I know, But they don't list the intake centerline and exhaust centerline. as i said i have all the rest. All they give is the LSA.

I know, But they don't list the intake centerline and exhaust centerline. as i said i have all the rest. All they give is the LSA. (lobe separation angle)

Id like to get a copy of a cam card if anyone has it. or at least the intake and exhaust centerline. I have all the rest of the cam data. including the LSA. need to verify the information I have. The blue in the Picture is an example of the information I am looking for Thanks,

I've read somewhere what the (L) in the casting area means. Possibly production Exhaust valve size? however I don't remember and cant seem to find the information again. I'm looking for a little help. please see the attached pictures. Thanks

Very nice!!

wow, lots of good info looks like the TF240 powerport heads will more that meet the issues. the rest seems to be in making it all fit. and a proper cam selection. THANKS TO EVERYONE

Thanks again

Very possible, however I've found in my years of building cars most (not saying you) state a lot of HP numbers but never really do the DYNO work. You and PRHEADS along with a few other have posted info that makes since. To be honest I'm looking to build my first MOPAR engine in 40 years. the...

I'm not trying to squeeze out every single HP out of the engine, just trying to make it more efficient without spending BooKoo Bucks. The secret to making an engine make HP is how efficient it takes air in, or "Flows". After the plug fires, the important part is over. Agreed, As you know...

looks good, by chance do you have an idea what they flowed?

Thanks for the info, the base motor .030 over 440, 10.5 comp. roller cam (head choice will determine lift and duration) I will run an after market head, to reduce weight and detonation, I don't want to mess with my stock 915 heads. The fuel will be supplied by a stealth EFI. the real issue is...

Thanks for the reply the numbers and work are based on a set of IDNY SR heads.

Ive look at two, the indy sez and the indy SR the basic SR head is the one I'm exploring for the work.

Thanks

yep, me to, there is one other thing cost, I've ported a cast head or two. I really don't want to look like, smell and taste it for the next few days.

You are correct. the Head porters I have spoken with say they don't see any thing wrong with it given the exhaust port was so poor to start with. The head intake flows very close to 305 CFM, ported it flows 355. both intake flows are adequate for most mid range power motors. however the exhaust...