Hey guys. I haven't been on here in a while since both my trucks were destroyed back in the May tornados, but I am selling one of them and I have a question.

I am taking the 4 barrel intake off of my 390 and putting on a two barrel. Is there anything that I should watch for or be carefull about. Any tips would be appriciated. Also, what are the tourque specs on the intake bolts, rocker arm shaft bolts, and valve cover bolts? Thanks guys. I hope to have another truck on here soon.

 

Intake bolts are like 30-35 lb-ft, rocker studs are 42 lb-ft, valve covers are like 12-15 lb-ft.

One tip, when removing a stock intake.........get a friend to help. MAN, are those things HEAVY!!!

Good luck
Larry

 

Sorry to hear about your trucks!
Freighttrain Larry pretty well covered the number ins and outs.
First of all, it will save you some antifreeze getting into the block if you pop off the thermostat housing and suck out everything you can get, assuming you are saving the engine.
I would use a cherry picker hands-down to handle the intake, both in-and-out, as it's just too heavy for wrestling to slip it in place manually. Your back and gut will thank you for that!
Make sure you clean the head and intake surfaces very throroughly, I like to use laquer thinner to wipe them down just before I start back together. It's best to stick the intake gaskets to the heads with Gaskacinch or something similar, and run a real light bead of RTV around the water ports.
I prefer to use an extra thick bead of RTV on the front and rear valleys rather than the cork, because they seem to want to mush around when I try to use them.
Be sure to drop your dizzy into its slot before you tighten the intake bolts. Even a slight misalignment can make it a real aggravating situation when you try to get the dizzy installed and adjusted later.
Assuming you are using new VC gaskets, be careful about overtightening and warping the VC flanges, and making a leak just by being manly!
Good Luck! Steve

 

Frieghttrain and Stephan hit it on the head. When you use the RTV to make the valley gasket, bead it on the block and let it sit for about a half hour or so. Unfortunatley, I've only done this once on a Cheby 396 but it did seem to work much better than the cork gaskets in the long run for keeping the oil in the motor.

Let me know if you agree or disagree with this guys. My experiance is limited

Jim

 

Thanks guys for the torque specs and everything else about the gaskets. I did use the cork on the front and back but did use some rtv on the corners and the water ports. Everything is going as planned I just have to put the distributor back in there and time everything and then put the rocker shaft assembly back on and the valve covers and then fire everything back up.

By the way, the intake I took off is on of those famous Aluminum MR Sidewinder intakes, but one of the ones that say SHELBY on them. I am selling the intake and will let people on here have a go on it first. Check the for sale place this evening and check it out.