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I’m gonna try to pull the motor this week and find a local shop to build it.

Yes so it had 1 bent rod and I tried to order just one but they were on back order and had to order a full set but they were the same pet number. We swapped from a 750 to a 1050 carb and had a big back fire through the carb and thought that’s what had caused the 1st push rod to bend and the 440...

Yea I thought it was strange how much shorter the pushrods were coming out to be but the pushrod tool I had came out consistent on all the push rods.

Off shelf 7422s. 3/8 shafts

Rods were comp magnums

Spinning the valve on the mic I’m getting 5.41-5.43. Ex valve is measuring 1.81

Intake measures 5.33” and exhaust is 5.42”

They are ovaled out and the valves are super sloppy in them

So these heads will need valve jobs, valves, guides and possible more pushrod clearance. Would I just be better off starting with a fresh set of Victor heads? Victor heads are gonna set me back $1800 w/o springs.

Pics from the passenger side

So some interesting find. At TDC the piston is .015 in the hole. Al of the exhaust valves are longer than intake. All of the exhaust valves are bent. With clay in the reliefs, the exhaust valve have a clearance of .010 after 3 rotations and the intake valve never touched the clay. Now it’s time...

No problem I appreciate any and all advice, criticism and sarcasm. I don’t have the car at the house so when I run over to my garage Monday I’ll get a bunch of pictures

Unfortunately with the wife not working and child I’m trying to keep it somewhat budget friendly. I’m not sure on which version they are

I don’t know the history of the heads. I bought them together with the short block and the springs were included. They were supposedly new and looked it. They did have 440source offset rockers but they actually cracked and that’s why I ordered Harland sharps.

1.5 rockers. That is something I have never done. I have a couple different mics, calipers and a dial indicator with mag base? I plan on hitting it with clay on either Sunday or Monday when I head over there.

I plan on heading to the garage on Sunday or Monday and I’ll be able to measure everything listed and find out where I went wrong. I just thought about scrapping these heads because they are knock offs and have been difficult to find the right parts for them

Not sure if I X’ed you but it’s right under the reply button and I got fat fingers

When I bought the combo it was a complete short block with the heads on the side. I pulled the cam, got the grind number on the rear of the cam and spoke with Comp who sent me the cam card

Truth. 71 A833, 8.75 with 3.77s

I know not a lot about this engine. It was a buddy’s who used to race it. I was told it’s a 400 stroked to a 470. He swapped his whole setup and sold this short block to another guy who bought these heads but never ran the motor. I acquired it. My own stupidity, it’s not like a SBC or Import...

They are the ProComp heads which are Victor knock offs

I forgot to mention that it’s not an immediate problem. The motor bent 2 push rods before. They were replaced and after about maybe 10 start ups and no more than 1.5 hours of idle / timing time did we notice something was going on and it was shut off and ripped apart

Unfortunately I have no close ups on anything as it’s not at my house. Here’s what I have on had. All I know is that they are ProComp heads, ~84cc. We had measured the valves at one point but I can’t remember the size off the top of my head. COMP 924 springs (Valve Springs, Dual, 1.509 in...

So the previous owner of this engine ran worked 906s before a bolt got dropped And wrecked the head. He then switched to Indys. As I stated up top i got little to no info on the current head and the compressed thickness on my HG is .040

It is a “street” car. I’m not looking to daily it or go on long trips. Just some local cruising stuff and shows

Issue is I have little to no info on the heads. They are procomp heads and I’m running Harland sharp roller rockers. Had someone look at it and determined the heads had the wrong springs. New springs were purchased and I’m having the same issue where it bends push rods but this time it bent a...

I’ve been working on my Dart for far too long now and when it’s almost time to finish it I’m having engine problems. I believe most of the issue is these knock off procomp heads. On the last start up an unfortunate series of events led to a bent valve. Can I get away with running 906 heads? The...

Got the rear brakes in which we’re a nightmare getting the right kit. Also got the radiator installed. Ordered a bunch more parts. Making progress!

I believe so. It was the only one I could find with my configuration. Thanks. Would look better if I could actually work on it more lol

Bought it from Hughes Engines. It’s an Indy 400-14-2.