hpfiend Posted May 8, 2008 Report Share Posted May 8, 2008 Hey all, I've done it numerous ways in the past with no problems (yet!) but which way do the professionals on this list do it? 1)light RTV on both sides of intake manifold to head (port) gasket(s)- adhere to heads then set intake on side also covered with rtv. 2)Bare gaskets with no RTV. A)Rubber end seals (if available) without locating holes drilled in block, skin of rtv below seal, 1/8"-1/4" bead rtv on top and in corners B)Rubber end seals with locating holes drilled in block, skin of rtv below seal, 1/8"-1/4" bead rtv on top and in corners C)No Rubber seal with 1/4"-3/8" bead of RTV across entire front and rear valley and in corners D)Cork end seals with skin of rtv below and lots on top and corners My 302 SBF I did 1(A), 460 BB Ford I did 1(B), My LT1 SBC I did 1©, and I have never done (D). The factory service manuals, haynes manuals, intake manifold instructions, and general info I have heard do not agree or are not clear. THANKS! Andrew Quote Link to comment Share on other sites More sharing options...
Guest 614Streets Posted May 8, 2008 Report Share Posted May 8, 2008 C)No Rubber seal with 1/4"-3/8" bead of RTV across entire front and rear valley and in corners Quote Link to comment Share on other sites More sharing options...
hpfiend Posted May 8, 2008 Author Report Share Posted May 8, 2008 So even if rubber seals are available with the holes drilled in the block you still do not use them? Quote Link to comment Share on other sites More sharing options...
Guest 614Streets Posted May 8, 2008 Report Share Posted May 8, 2008 Thats correct. Quote Link to comment Share on other sites More sharing options...
hpfiend Posted May 8, 2008 Author Report Share Posted May 8, 2008 cool thanks I will do it that way next time... anyone else? Quote Link to comment Share on other sites More sharing options...
flippy1974 Posted May 8, 2008 Report Share Posted May 8, 2008 C)No Rubber seal with 1/4"-3/8" bead of RTV across entire front and rear valley and in corners x2 Quote Link to comment Share on other sites More sharing options...
AJ Posted May 8, 2008 Report Share Posted May 8, 2008 i don't use RTV as it brakes down with oils over time. i use either GM Assembly Adhesive or GM Engine Sealent. NAPA also has something kinda like Assembly Adhesive called The Right Stuff. also i file 13 the gaskets. Quote Link to comment Share on other sites More sharing options...
Dave1647545494 Posted May 8, 2008 Report Share Posted May 8, 2008 it just depends on the motor when I put buicks together it used a metal valley pan for an intake gasket so I used indian head on it ( gasket shellac never dries or hardens) on my 5.0 i use rtv or something similarfor end seals and put the paper gaskets on the heads dry on my jeep the intake and ex manis share a gasket I also put it on dry Quote Link to comment Share on other sites More sharing options...
hpfiend Posted May 9, 2008 Author Report Share Posted May 9, 2008 i don't use RTV as it brakes down with oils over time. i use either GM Assembly Adhesive or GM Engine Sealent. NAPA also has something kinda like Assembly Adhesive called The Right Stuff. also i file 13 the gaskets. Are you talking about the dark grey GM sticky stuff? I am pretty sure I used that on my LT1 and it sealed it right up. Quote Link to comment Share on other sites More sharing options...
hpfiend Posted May 9, 2008 Author Report Share Posted May 9, 2008 it just depends on the motor when I put buicks together it used a metal valley pan for an intake gasket so I used indian head on it ( gasket shellac never dries or hardens) on my 5.0 i use rtv or something similarfor end seals and put the paper gaskets on the heads dry on my jeep the intake and ex manis share a gasket I also put it on dry hmm- indian head thats a new one- I am going to google that- Thanks! Quote Link to comment Share on other sites More sharing options...
Guest Removed Posted May 9, 2008 Report Share Posted May 9, 2008 C)No Rubber seal with 1/4"-3/8" bead of RTV across entire front and rear valley and in corners only way to do it! Quote Link to comment Share on other sites More sharing options...
Guest 614Streets Posted May 9, 2008 Report Share Posted May 9, 2008 only way to do it! Hey where the hell have you been? Line up some side work and lets go halfs at my shop , I can work with you if you wear a big old piece of duct tape over your mouth! Quote Link to comment Share on other sites More sharing options...
AJ Posted May 13, 2008 Report Share Posted May 13, 2008 Are you talking about the dark grey GM sticky stuff? I am pretty sure I used that on my LT1 and it sealed it right up. yes, i keep it in stock at home and in my tool box lol. Quote Link to comment Share on other sites More sharing options...
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