Ok after waiting a year porting and flowing my Stealth Heads! I thought I was ready to bolt them on. FOLLOWING the directions in the box from 440 Source, buying correct gaskets, changing to 928 springs and 10 degree retainers, following the prescribed #torque. I was ready to set the valve lash. It was fine until setting the Intakes there wasn't enough clearance for the 3/8 pushrod. Now what? Call 440 Source and the answer is!!!! Oh didn't anyone tell you when you bought them you have to clearance the intakes??????? NO NO and NO. Not on the install sheet, not in the add and certainly not when I order. Advertisement read great heads bolt on the power. THANKS 440 Source!!!!!!!!!! Is there anything else I need to know before I fire and make a run down the track??????

Yeah, check everything twice before assembly. No aftermarket part is " bolt on " and go in my experance. Check it all. Then check it again. And if in doubt call the tec line.

I agree, no part is bolt on with out checking. Especially aftermarket.

Right....and the aftermarket is not accountable for quality.

More Kool aid?

So did the Edelbrock heads when using 1.6 rockers.
Just get out the grinder and live happily ever after. Or, upto the next snatch ofcourse.

My Stealths fit with the 3/8 push rods.They are super close but dont touch.As said always check everything.I also changed me locks, springs and retainers.My machinist also back cut the valves and cleaned them a bit.Would have done it with just about any head.Rocky

So you're surprsied a non-stock pushrod side won't fit? I wouldn't be, but for the price and considering it's an aftermarket part you'd think they'd have worked that into the design.

The challenge wasn't they needed clearanced. When you look at them it looks like they'll clear until you bolt them on and put the rocker shafts on to set vash lash. They put everything on the install sheet but check the clearance. Just trying to put info out there for the next guy. I've been checking out the info on the Stealth heads for over a year and never saw a post on clearance problems. All and all they came out nice we'll see what the improvement is in two weeks at T&T. I'm really not trying to be negective about the heads.

Install sheet? I never got no install sheet. Just a set of heads in a box.

Try a set of Victor heads!

I just hand ported a set for a friend and stealths definately are not Edelbrocks. I clearanced the pushrod holes while I was at it so I hope he has no issues on test fit.
I had to do my Indy SR's too but like you found out after assembly!!! LOL!!!

i just would like to know what needs attention on these heads? i understand they need the standard "blueprint"..ck valve job,guides/stems clearance,straightness, installed height,proper springs for cam,maybe backcut the valves?,...but is there any other things besides pushrods?....and the most of all how is the stock and ported stealth airflow vs 906.+.ported 906 big valves! actual numbers,and or hp increases please...i cant be the only one interested. not really interested in ede's...looking for stock look.

Oh here we go again. I'll take Stealths any day over Eddies for price.

A neighbor just bought a set of Stealth heads...VERY nice.He is changing the springs and locks and such as he is running a large cam,but he brought them to the machine shop to make sure everything with the valve job and guide clearance was good and they were just fine.

My 906's ported by COMP U Flow on his bench flowed 258 intake and 210 exhaust @ 600 lift. On a 472 Stroker with 640 lift cam ran 10.96 with a 3465# 67 Dodge at Norwalk CC event last season.
The Stealth Heads ported, I just put on flowed 284 Intake and 214 Exhaust @ 600 lift. In two weeks I'll let you know what the difference is. One thing for sure there is 40# off the front of the car. Thanks for all the comments see you all in Columbus, OH in May.