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Username Post: best intake man gaskets?        (Topic#280494)
acmsal 
Senior Member
Posts: 233

Loc: san jose,ca.
Reg: 02-19-02
05-01-12 05:53 PM - Post#2221291    

So I'm in the process of replacing the intake manifold gaskets on my 377sbc, Dart Al. heads 215cc flow, Comp cam xs282s-10, Weiland Stealth hi-rise dual plane in. man. I discovered I had a vacuum leak when I sprayed some carb cleaner around the base of the manifold and the sec. throttle shaft (Holley 750 vac sec 4160). The idle had been erratic for the past 3 months, so can you folks suggest a high quality set of gaskets for the job? I had been using Fel-Pro in the past, may use them again. FYI, this motor's been running on the street some 3-4 years now..15K miles.

 
greg_moreira 
Very Senior Member
Posts: 3262

Reg: 10-06-03
05-01-12 06:50 PM - Post#2221320    
    In response to acmsal

Fel pro printo a seal is what I use.

Edelbrocks gasgacinch(think I spelled that right) to stick the gasket to the cylinder head, and "the right stuff" on the china walls instead of an end gasket.



 
C10 Sleeper 
Valued Contributor
Posts: 3426
C10 Sleeper
Loc: Redding Ca
Reg: 03-17-09
05-01-12 08:56 PM - Post#2221367    
    In response to greg_moreira

X2 on the fel pro and right stuff. Its been years since i have used the gasgacinch stuff and I haven't had a problem with or with out it.
http://photobucket.com/C10Pictures


 
acmsal 
Senior Member
Posts: 233

Loc: san jose,ca.
Reg: 02-19-02
05-01-12 10:03 PM - Post#2221388    
    In response to C10 Sleeper

thanks guys, Dart recommends Fel-Pro #1206 for 215cc heads

 
MikeB 
Senior Member
Posts: 9472
MikeB
Loc: Plano, TX
Reg: 08-28-03
05-04-12 07:15 PM - Post#2222545    
    In response to acmsal

I've used FelPro 1204, 1205, and 1256 gaskets on several engines, and have never had a leak that I know of. I always wipe down the sealing surfaces with lacquer thinner, and then glue the gasket to the head. I use RTV only around the coolant ports on both sides of the gasket.

Be sure to do a dry run first to determine how much RTV "height" you'll need on the front and rear of the lifter valley. Also check to see how well the gaskets fit the port openings on manifold and heads. The 1206 has a pretty large openings.
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Edited by MikeB on 05-04-12 07:20 PM. Reason for edit: No reason given.

 
acmsal 
Senior Member
Posts: 233

Loc: san jose,ca.
Reg: 02-19-02
05-06-12 01:15 PM - Post#2223148    
    In response to MikeB

What a difference!! I replaced the intake manifold gaskets on my 377sbc/215 Dart 215cc Al. heads. Actually I feel a little bit stupid because I've been chasing all kinds of fixes for this motor. Swapped carbs, dist, PCV's, you name it..all the while my intake was leaking. I kinda took it for granted that with heads this big on the street I'd have to give up a certain amount of drivability. We'll she now idles smoothly @ 900rpm with 12" of vacuum. On the other hand I'm sure going to be putting more miles on this 78 Vette.

 
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