cudajim
cudajim
I have a 69 318 with no heads and also have a 67 273 engine. Can I use the 273 heads on the 318 along with the 318 hydraulic valve train? I'm trying to go cheap.
64 and 65 are the ones you don't want . 66 and newer are interchangeable.Yup as long as there 67 not 64-66. You could mill .45 off a stock head get some real good compression on the early 318s pistons are not the deep inside 9:1 even 9:5.
Whoops your right64 and 65 are the ones you don't want . 66 and newer are interchangeable.
Woah there big fella. The 67 should be solid lifter and the 318 will be hydraulic. The solid lifter and hydraulic lifter pushrods are different. With the hydraulic cam you will need the hydraulic pushrods and the rockers and shafts off the 318. Be careful what you are doing here.Thanks for the replies. It should be easy, I'll just pop the heads off the ole 273 and put em on the 318 with the 318 valve train and juice lifters. I'll let you all know how it runs.
I have a 69 318 with no heads and also have a 67 273 engine. Can I use the 273 heads on the 318 along with the 318 hydraulic valve train? I'm trying to go cheap.
Woah there big fella. The 67 should be solid lifter and the 318 will be hydraulic. The solid lifter and hydraulic lifter pushrods are different. With the hydraulic cam you will need the hydraulic pushrods and the rockers and shafts off the 318. Be careful what you are doing here.
Yes and they will give you better comp with 57cc chambers or 60 I think on the 67 's as opposed to 62 or 63?
I have a 69 318 with no heads and also have a 67 273 engine. Can I use the 273 heads on the 318 along with the 318 hydraulic valve train? I'm trying to go cheap.
Yup as long as there 67 not 64-65. You could mill .45 off a stock head get some real good compression on the early 318s pistons are not the deep inside 9:1 even 9:5.
I have a 69 318 with no heads and also have a 67 273 engine. Can I use the 273 heads on the 318 along with the 318 hydraulic valve train? I'm trying to go cheap.
Don't you mean 'raise' the compression, KK? The 273 chambers (assuming closed chambers) will be smaller. The head gasket will be thicker; the net ought to be a few tenths increase in compression ratio on the'69 318. But that is assuming closed chambers on the '67.Just bolting on the 67 273/318 heads with a .040" head gasket will lower the compression about 1 point...
Don't you mean 'raise' the compression, KK? The 273 chambers (assuming closed chambers) will be smaller. The head gasket will be thicker; the net ought to be a few tenths increase in compression ratio on the'69 318. But that is assuming closed chambers on the '67.
If the OP's 273 heads are open chambers like the later 273/318 heads, then the thicker head gasket will lower compression about 0.3 points; not a whole point. It is still going to be up at 9:1; better than the later 318's. The OP could go with the .028" thick head gaskets and get back up 9.2-9.3.
But who knows what condition the cylinder bores, pistons, rings, and valves/guides are in and if it will make compression in all cylinders anyway! So the heads and gaskets are kinda a moot point....
Thanks TMM.. I was not clear on if the SBM's had the 675 open chamber heads by '67... sound like not.67 273 heads are closed chamber.
As long as you measure the clearance the op should be ok. I used the Mopar Performance version of the Mr Gasket1121G gaskets with a .028 compressed thickness on my 273 with the Egge 10/.5 pistons. I had close to .100 clearance and the pistons are out of the hole. The 318 slugs in the op's 318 are close to zero deck but still below. Dang, I should have taken a photo of the exposed dome.Thanks TMM.. I was not clear on if the SBM's had the 675 open chamber heads by '67... sound like not.
Which means that for sure the OP needs to use a .039" or thicker head gasket... the .028" thick head gaskets would be getting too tight on piston clearance to the closed chamber heads. Stand Felpro kit head gaskets at .050" thick would work and be cheap.
I wish I could measure the shadows in my photo.But your dome sticks up in the chamber; that is not the issue. The question is how much below deck was the flat area of your pistons...??
I'd suspect that the OP's early 318 pistons are < .010" below deck and probably < .005". If so, the the .028" thick gasket would give a piston to head clearance under .035". Sorry... way too close for me for worn piston rocking in the bores + a bit of rod bearing wear.
I didn't figure there would be much of an issue. Ma Mopar used steel shim head gaskets with the pistons and heads without an issue. I don't remember much of the piston being below deck.But your dome sticks up in the chamber; that is not the issue. The question is how much below deck was the flat area of your pistons...??
I'd suspect that the OP's early 318 pistons are < .010" below deck and probably < .005". If so, the the .028" thick gasket would give a piston to head clearance under .035". Sorry... way too close for me for worn piston rocking in the bores + a bit of rod bearing wear.