gaskets..

[FR 500 HAND BUILT]

Ok i have seen and heard guys (old guys) from back in the 70's run silicone gaskets instead of metal and rubber ones. IS there any gains to doing it this way?? I have a friend in socal that did his 88 429 clone boss motor this way and he has had no problems with it. So money is not an a problem for gaskets i was just wondering what ur guys thoughts "(gals too)" on this. Thanks Josh

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[cyac5l8trfcar]

just use the ford racing ones. you don't mess with the thickness and they are a proven brand.

 

[rocket5979]

just use the ford racing ones. you don't mess with the thickness and they are a proven brand.

+1. Just get stocker Ford ones.

 

[FR 500 HAND BUILT]

i was asking not what ones to use-- i was asking why they used just silicone back in the day?

I am going to use the stock ford becuase they work so well!

 

[rocket5979]

i was asking not what ones to use-- i was asking why they used just silicone back in the day?

I am going to use the stock ford becuase they work so well!

I guess we just assumed that being that you are in the middle of an engine build that you were comtemplating doing that with it.

I would guess that the much bigger cylinders of the heyday would not tend to generate nearly as high of cylinder pressures as modern cars of the same horsepower. Especially being that most of them were N/A.

 

[FR 500 HAND BUILT]

yea i was just wondering it-- my uncle just got done rebuilding his 70 chevelle ss- and didn't use 1 gasket- just a bunch of silicone. The motor is 15.1:1 compression too. :headbang:

 

[cyac5l8trfcar]

yea i was just wondering it-- my uncle just got done rebuilding his 70 chevelle ss- and didn't use 1 gasket- just a bunch of silicone. The motor is 15.1:1 compression too. :headbang:

ok, i've never heard of making head gaskets out of silicone. What kind do people use to do this?

 

[FR 500 HAND BUILT]

he has a couple of friends who do it-- high temp copper silicone stuff- there was a website on old muscle car guys who did this too-- i need to find it.

 

[crazyfor04's]

Dang 15.5:1 Comp. That is damn High for a gas engine.

 

[FR 500 HAND BUILT]

he built a 454 chevy motor for it then bored it to a 467 with a 427 crank. The thing makes 602 ft of torque to the wheels- 571 rwhp. 110 octane gas with the iron heads- he is putting on aluminum heads soon and wants 650 rwhp and 700 ft of torque the car is a monster but gets 9 miles to the gallon :lmao: :headbang:

 

[cyac5l8trfcar]

he built a 454 chevy motor for it then bored it to a 467 with a 427 crank. The thing makes 602 ft of torque to the wheels- 571 rwhp. 110 octane gas with the iron heads- he is putting on aluminum heads soon and wants 650 rwhp and 700 ft of torque the car is a monster but gets 9 miles to the gallon :lmao: :headbang:

IRON HEADS!!!

 

[FR 500 HAND BUILT]

yep and now he is going to get aluminum racing heads- the thing is a monster! :headbang: it is a 70 chevelle ss like i said and everything is stock except for the motor. The suspension is the original resto stuff from 1970 -- the thing gets loose under any kind of load!

 

[rocket5979]

the car is a monster but gets 9 miles to the gallon :lmao: :headbang:

god I love being able to have an EFI vehicle that will get pretty good mileage even when it does have 600+ at the wheels! Unless, I stomp on the gas of course. :burnout:

 

[FR 500 HAND BUILT]

yea i didn't mention his is carbed-i believe it is a demon 850cfm - i am not sure. I am a rookie with pushrod motors!Mod motors are a different issue.

 

[cyac5l8trfcar]

yea i didn't mention his is carbed-i believe it is a demon 850cfm - i am not sure. I am a rookie with pushrod motors!Mod motors are a different issue.

15.5:1 + 467cid= at least 1000cfm. 9mpg is pretty impressive for a race car. But, a 850 would exlpain why a large motor @ 15.5:1 compression is only at 650whp.

 

[FR 500 HAND BUILT]

yea i said i think-- i am no rocket sceintist on the pushrods-- i am a mod guru tho! All i now is the car sounds badass and huals ass! :headbang: