Aftermarket Heads or Port Cast Iron
Registered User
Joined: Nov 2008
Posts: 8,484
From: Central Fl
[QUOTE=Smitty275;650285]Not gonna happen very easily. For love the valve reliefs are totally wrong. SBC valves are at a 23° angle. Ours are at a 6° angle. Valve placement in the cylinder is totally different as is the combustion chamber. You'd be doing a lot of modifying of the dome to make it work and would most likely end up with holes in it some where. Most domes are hollowed out underneath to reduce weight.
[QUOTE]
You and I have had this discussion before. With all due respect, unless you have lifts of .700 or more and on a very tight lobe sep this isn't an issue.
I know this to be a fact. I used a SBF piston in the last DX I did. With .610 lift and 234@.050 on a 108 I still had .240 piston to valve clearance at tdc overlap. That's more than plenty.
However you are correct on the dome position. Chances are you'd need some work there and that could get costly, if the piston could even take it.
[QUOTE]
You and I have had this discussion before. With all due respect, unless you have lifts of .700 or more and on a very tight lobe sep this isn't an issue.
I know this to be a fact. I used a SBF piston in the last DX I did. With .610 lift and 234@.050 on a 108 I still had .240 piston to valve clearance at tdc overlap. That's more than plenty.
However you are correct on the dome position. Chances are you'd need some work there and that could get costly, if the piston could even take it.
Last edited by cutlassefi; Feb 4, 2014 at 04:00 PM.
" Hoo yah "
Joined: Sep 2009
Posts: 407
From: North Park,IL
I suppose since they are relatively new, there aren't a ton of failures yet.
That being said, I do know from my inference skills that the specs aren't where they're supposed to be.....Otherwise Bernard probably wouldn't offer an inspected and better package.
My take is, if you're a machinist, you can get away with buying the cheap ones and straightening them out to your liking, but I'll guarantee they're cheap for a reason.
Edelbrock heads are expensive, and not "spectacular" out of the box. Just regular ol' heads to drive with.
If something is truly great, It'll bring money, if it sucks, It'll be cheap. Common sense to me.
Edelbrocks cost more money, and they're middle of the road so to speak if you just unbox them and bolt them on.
That being said, I do know from my inference skills that the specs aren't where they're supposed to be.....Otherwise Bernard probably wouldn't offer an inspected and better package.
My take is, if you're a machinist, you can get away with buying the cheap ones and straightening them out to your liking, but I'll guarantee they're cheap for a reason.
Edelbrock heads are expensive, and not "spectacular" out of the box. Just regular ol' heads to drive with.
If something is truly great, It'll bring money, if it sucks, It'll be cheap. Common sense to me.
Edelbrocks cost more money, and they're middle of the road so to speak if you just unbox them and bolt them on.
I guess the best method is to buy Procomps bare for about $800.00 bucks then be a smart shopper and get a deal on quality valves and springs. The same could be applied to finding a set of bare eddy's and doing the same thing.
Everyone knows Ka heads rule the iron world any way.
. It would be nice if they offered a direct bolt on Alum head for SBO Olds, but when I ponder that thought I come to the conclusion that it may be just a waste of time for aluminum heads on a gas 350 block.
Last edited by 815Cutlass1972; Feb 4, 2014 at 04:06 PM. Reason: Forgot a word
Seasoned beater pilot.
Joined: Jan 2007
Posts: 5,468
From: Chicago
here----> https://classicoldsmobile.com/forums...mp-teaser.html
Registered User
Joined: Mar 2012
Posts: 754
From: Quad cities Illinois
Procomps were not available when i got my heads done. If i knew the first thing about how to read plugs and tune a carb im sure i will get my 11 sec slip. My plan for this summer is to work on tuning. Anyone know of a good book or article on plug reading?
Engine Builder
Joined: Jan 2010
Posts: 552
From: Louisville, ohio
[QUOTE=cutlassefi;650308][QUOTE=Smitty275;650285]Not gonna happen very easily. For love the valve reliefs are totally wrong. SBC valves are at a 23° angle. Ours are at a 6° angle. Valve placement in the cylinder is totally different as is the combustion chamber. You'd be doing a lot of modifying of the dome to make it work and would most likely end up with holes in it some where. Most domes are hollowed out underneath to reduce weight.
You and I have had this discussion before. With all due respect, unless you have lifts of .700 or more and on a very tight lobe sep this isn't an issue.
I know this to be a fact. I used a SBF piston in the last DX I did. With .610 lift and 234@.050 on a 108 I still had .240 piston to valve clearance at tdc overlap. That's more than plenty.
However you are correct on the dome position. Chances are you'd need some work there and that could get costly, if the piston could even take it.
He asked about a SBC domed piston and that is what I answered to. Flat tops are another story which wasn't included in my reply since it wasn't pertinent.
You and I have had this discussion before. With all due respect, unless you have lifts of .700 or more and on a very tight lobe sep this isn't an issue.
I know this to be a fact. I used a SBF piston in the last DX I did. With .610 lift and 234@.050 on a 108 I still had .240 piston to valve clearance at tdc overlap. That's more than plenty.
However you are correct on the dome position. Chances are you'd need some work there and that could get costly, if the piston could even take it.
Registered User
Joined: Dec 2014
Posts: 3
From: Cranbrook, BC
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