I just bought a 1970 440 block and I was wondering if I can throw any 6 pack intake on it?

Is there a combination of heads that would work well with the 6 pack set up?



Thanks just a student trying to save a buck!

Yes, no problems, any factory heads that work with a stock 4 barrel intake will also work with a Six Pack intake, other than Max Wedge heads, they all have the same intake port size, and even Max Wedge heads will work if you modify the intake a bit.

any RB (raised block) intake. 383/400 intake would not fit.

Well yes, but we were talking 440s Robert....I left out the obvious

so is there any suggestions on what size of heads I should buy to help make my car go?

more knolwedge is better than no knowldege, thanks guys. I just Don't know much about which size of heads to put on or how the ratios work.

If you want to stay with iron heads, any of the 'big valve' (2.14) heads would work fine with a basically stock setup. You could also use aluminum heads from 440 Source or Edelbrock which would breath a little better and be a lot lighter.

Dave

Depends how fast you want to go and how much money you want to spend. A student trying to save a buck may have to rethink doing a 6-pack. Doing a 6-pack, carbs, air cleaner, linkage, all adds up to $$$. Even a dual quad is cheaper than a 6-pack.

I did....

Wasn't there an issue at one time about the six pack manifolds being factory machined at the wrong angle for complete sealing against the heads?

your combination of components really needs to match the intended use of the car (street or strip). my OPINION is if you want a street car, then with steel heads stay around 9.75:1 and if you go aluminum 10.75:1 to 11:1. don't over cam!!! six packs like cams with a bigger intake center line around 114 degrees. i myself am still learning but, these items always seem to hold true.

For factory heads 915s are the best because they have closed chambers, then 906/452/346/902 which are all open, theyre all pretty much the same power wise, 906s are a tad better factory but the others are more friendly for porting.

915s arent cheap though, you can probably get a pair of eddys or stealths for the same price as freshened 915s.

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For factory heads 915s are the best because they have closed chambers, then 906/452/346/902 which are all open, theyre all pretty much the same power wise, 906s are a tad better factory but the others are more friendly for porting.

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while you guys munch on your popcorn, I'll toss this out there.

I had my set of 906 heads freshened up, hot tanked, hardened seats installed for unleaded gas, cut just enough to ensure they were square and flat, new valves, springs, and valve job.

I was at $700 for all that. 6 months later, I yanked them off and went with out of the box eddy heads at $1300 for the pair--that was a year prior to 440 Source's "stealth heads" that are what? $900? with the same flow as eddy's, straight plugs like factory heads vs eddy's angled plugs, which can be troublesome with some headers, and a stock looking head!

Had I ported the 906s, I would have been at the same cost of the eddy's brand new.

6-pak intakes...ported iron heads, out of the box aluminum heads...again, what is your budget? with talk like this, next thing you know, someone is gonna say "while you have it apart, you might as well freshen up the bottom end too, and why bother re-sizing the stock rods when new aftermarkets are just a tad more in price, and a brand new casting vs a 40 year old abused and fatigued piece...new rods? bore the cylinders out and go with .030 over pistons to ensure a good piston seal...heck, for a few hundred more, you can toss in a stroker crank and get the complete stroker kit kit for only $1500...

and sure, you'll end up with a 600hp torque monster...but you'll also spend $6,000! how big is your budget?

be careful with that snowball sitting at the top of the hill...once it's rolling, it won't stop!

That post addressed everything except what I'm about

I will never say 4 Barrel again

Never had a sealing issue in 35yrs with either cast iron or aluminum intake,never used the paper gaskets.