engine help
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Joined: Jan 2001
Posts: 57,025
Likes: 2,756
From: Virginia
It's ok to have rtv in place of the rubber valley gaskets on the ends, and around the water ports up front. Not ok around the air/fuel ports. I tried it once, the fuel turns the rtv to a green goo. They tell you on the tube not to use it around fuel, but I had to try it anyway.
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Freshman User
Joined: Dec 2018
Posts: 33
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From: fort bragg
idk wat im gonna do the older gentleman that i got it from did all the work and wired it up to run like a chevy idk if im gonna save it or just go different route it 2 nice of a truck to just shove out on my dads property and let sit hopefully i can save it it had a hack job done with it
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Joined: Sep 2020
Posts: 6
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no you don’t have to change the heads, you can if you want to, might be more beneficial to keep the heads on the 1990 motor since they will be e7
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Post Fiend
Joined: Feb 2008
Posts: 5,831
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From: St Albert, Alberta
If the engine is the original it won't be a roller cam in 1990. Besides intake you will have to swap the front timing cover also.
Check the block casting number it will need to be an F4 block to be a roller cam block.
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Freshman User
Joined: Dec 2018
Posts: 33
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From: fort bragg
not that i can tell but will take ti machine shop here soon hopefully and get the answer on it and ok ill look for that im just weigh my options 9n everything trying to figure out what route to take
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