Just talked with summit and they said the intake i ordred (7540) Stealth ram) is for 86 and older. My engine has a different angle and that is why the intake will not seal???

from what i understand many people have run this intake with out problems????

Is this true?

 

HSR should be angled for both intake bolt styles, at least mine and 2 others that I installed were.

If it is leaking at the rear china wall, then it may be the older style that had a malformed cast.

 

its leaking into the intake ports, ive tried several different ways to seal it up and nothing works

 

Maybe your heads are shaved, that could cause the intake ports to leak.

there is only one model of the stealthram from what I can see and it comes in 2 finishes, regular and polished and covers all years of Gen 1 motors.

 

You could try out a thicker intake gasket 1/8" type, I don't have a steathram but I found it helped give a better seal on my intake, everything was more aligned with the bolts and intake sat nice on the heads.

 

if im not mistaken the vortech HSR is a diff intake angle, maybe you got that one by mistake, your pn checks out as normal 23* head sbc. hopefully my brain isnt confusled.

 

also forgot about the intake ports being at different height levels.

 

What intake gaskets are you using?

 

i tried 1205, stock blue felpros, and currently have 2 felpro 1205's glued together and thats not even working.. ive tried using the right stuff on the gaskets and not on the gaskets

also the hsr leaked with the stock cylinder heads, and the new trickflow cylinder heads "brand new".. my TPI never leaked and block has not been decked

 

Vortec intake only has 4 bolt holes per side, and I am not sure if the 4 bolts line up with the normal sbc head.

 

thats right ty zeph, pics would help if u can, and you sure nothing has been decked or milled etc and 2 gaskets wont work

 

Positive. It seemed to only leak on on e cylinder head the
last time if that helps any

 

maybe you got a malformed HSR, only thing i can think of

 

When I put my stealth ram on it was sitting high. I used the 1205 and then the cork gasket for front and back and large amount of rtv. I have a problem with mine running right and am wondering if I have a vacuum leak at the china wall? Is this the same type of situation you are having?

 

you cant use the cork gaskets i already found that out, i have mine completely sealed now with "THE RIGHT STUFF" rtv sealant on the front and rear walls.

I just can not get it to keep from sucking oil into the heads throught the intake ports ..
the symptoms this is causing is a lot of quick fluctuations in the air fuel ratio, and a sort of stuttering/misfire at cruise... I can also tell when i get it to seal better or worse than other times because my top end either increases substantially, or decreases terribly.. hell this time i can only top 125 and the car is done other methods i was able to top 155 before i let out.

It is highly robbing me of horsepower and torque. I dont get many miles before im really low on oil and have to add a quart


the best method ive found so far is the 1205 gasket with NO rtv around the intake ports OR around the water ports. gasket only

 

these require no rtv other than the china walls, did you retorque the hsr?

 

i was thinking about buying the hsr setup for my 87 iroc so basically if i get the 1205 gaskets i shouldnt have a problem i have stock heads on it

 

yep, just make sure you have the dist with the remote coil, 87 should have the remote mount sys, but check

 

stupid question but i would i kno. all i kno is if your faceing the motor theres a wire that comes from the dist and it goes to the coil on the left side like kinda on the intake and theres two plugs that only go in a certain way on the coil idk if thats a remote mount or not lol

 

HEI dist has the coil mounted in the cap

 

Yep, big cap HEI does have a coil in cap. But that MSD 8366 linked above is an external coil HEI (later style F-body), which is also what you need with an HSR.

Here is the MSD version of big cap HEI, which has the coil in cap. (Ignore the vacuum canister)

 

Can you or somebody else please explain the difference between a small cap HEI and a regular distributor? Do they handle more power even though it's in a similar package? I always thought that the difference was that HEI had the larger diameter body and the coil on top.

 

there both HEI(high energy ignition) one (large) has a coil mounted directly to the dist, the other (small) has the coil mounted on the intake via bracket on the pass side of the car, look for a spark plug wire in the middle of the dist cap going <--- way, its short too bout a foot and a half

TTT Nater any news?

 

tried retorquing, still no luck. i may just get a 1266 and skip the rtv, hope it seals atleast the water jackets, and call it good. just replace my foul plugs every 1000 miles

 

Do you have a straight edge?

You could always have a machine shop take a look at the intake. If it's completely straight and flat it sounds to be sitting too high.

I know you've probably trouble shot the problem but how did you determine it was coming from the intake and not rings? Are you using some type of sealant on the intake bolts? I'm not a EFI guy but I know my center intake bolts leak with-out thread locker/sealant with carb intakes.

 

mine looks like the one on top with the connectors not the one with the vaccum thing or whatever that is will the intake still work

 

MSD don't make a computer controlled coil in cap dist ; only the small cap remote coil version .
If you want a MSD dist for a EFI engine ,8366 is your only choice regardless of intake type

 

The 8366, yep that will work.

 

Ok, I think I misunderstood your previous post. The guy asked about an HEI fitting and you showed the MSD 8366 and said "coil mounted in cap " so I thought the OP might accidentally grab an MSD cap and rotor kit or something and think they were fine. I see we were trying to convey the same message: small cap external coil required.

 

well, i finally got the intake to stop leaking oil.. i used the fel pro 1266 gaskets, however, i found a more serious problem that was actually causing the stuttering/misfire... it got real bad just recently so i decided to do a compression test, 162/163 on all but cylinder number 8.. the very last one i attempted and as soon as i pulled the spark plug water came out .. i knew i had coolant in my oil and thought maybe i jut didnt get that part to seal, well water in one cylinder makes sense to be the head gasket, correct?? it was 195 during the compression test