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Old 09-20-2017, 12:41 PM   #101
rvrfoot
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Re: 283 and a Slight Hop Up

I got my 283 almost ready to drop in soon. I will get pictures today looks really nice. Imo
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Old 09-20-2017, 04:19 PM   #102
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Re: 283 and a Slight Hop Up

I will be rebuilding my 283 also. I thought about putting in a 350 with a 700R4 but the truck is original and since I always tell others with original trucks to keep them that way how could I not. Only switch is I now have a Muncie 3 speed with OD so I will be happy with that I hope.
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Old 09-20-2017, 04:25 PM   #103
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Re: 283 and a Slight Hop Up

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Old 09-20-2017, 04:26 PM   #104
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Re: 283 and a Slight Hop Up

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Old 09-21-2017, 05:24 AM   #105
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Re: 283 and a Slight Hop Up

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I like it.
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Old 09-21-2017, 07:49 AM   #106
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Re: 283 and a Slight Hop Up

Just curious about heads for a 283. I still have the original 283 in my truck and it has surprisingly really good compression. I've considered leaving it in and putting a different cam, intake, and carb. I've heard people using 305 heads and I was wondering if I could use a set of 1.94s I have off of a 350 on it? They have newer valve guides. I've heard old 283 heads don't handle the newer fuel that well. I don't know the casting # off hand. I also have a set of double hump 2.02 heads, but I figure they would be better on a 350. My guess is I could use them but the compression will be different??

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Old 09-21-2017, 09:11 AM   #107
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Re: 283 and a Slight Hop Up

I think the lead that used to be in gas lubricated the valve guides. I think the new guides don't need the lead.
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Old 09-21-2017, 09:57 AM   #108
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Re: 283 and a Slight Hop Up

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Originally Posted by Chevy Fleetside View Post
I will be rebuilding my 283 also. I thought about putting in a 350 with a 700R4 but the truck is original and since I always tell others with original trucks to keep them that way how could I not. Only switch is I now have a Muncie 3 speed with OD so I will be happy with that I hope.
That sounds like an awesome combo with the 3 speed OD!
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Old 09-21-2017, 11:15 AM   #109
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Re: 283 and a Slight Hop Up

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I think the lead that used to be in gas lubricated the valve guides. I think the new guides don't need the lead.
Yes, my motor builder said he put the newer valve guides in.
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Old 09-21-2017, 12:10 PM   #110
sirJim
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Re: 283 and a Slight Hop Up

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Originally Posted by James903 View Post
Just curious about heads for a 283. I still have the original 283 in my truck and it has surprisingly really good compression. I've considered leaving it in and putting a different cam, intake, and carb. I've heard people using 305 heads and I was wondering if I could use a set of 1.94s I have off of a 350 on it? They have newer valve guides. I've heard old 283 heads don't handle the newer fuel that well. I don't know the casting # off hand. I also have a set of double hump 2.02 heads, but I figure they would be better on a 350. My guess is I could use them but the compression will be different??
The 283 likes the 194 valves.
The seats are hardened on the newer heads for the unleaded fuel.
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Old 09-21-2017, 01:48 PM   #111
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Re: 283 and a Slight Hop Up

Maybe I will try the 1.94s with the bigger cam. I kinda like the idea of a couple extra mounting holes on the front in the newer heads. I'm actually more curious how much better the 283 will run with some of the mods (carb,intake,cam,and different heads)
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Old 09-21-2017, 01:54 PM   #112
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Re: 283 and a Slight Hop Up

Its hard not to have the holes in the front of the heads.
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Old 09-21-2017, 02:42 PM   #113
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Re: 283 and a Slight Hop Up

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Looks killer!!
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Old 09-21-2017, 03:11 PM   #114
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Re: 283 and a Slight Hop Up

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Looks killer!!
Thanks
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Old 09-21-2017, 03:12 PM   #115
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Re: 283 and a Slight Hop Up

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I like it.
thanks
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Old 09-21-2017, 03:29 PM   #116
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Re: 283 and a Slight Hop Up

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Man that's beautiful.
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Old 09-21-2017, 03:34 PM   #117
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Re: 283 and a Slight Hop Up

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Man that's beautiful.
Thanks
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Old 09-22-2017, 12:13 AM   #118
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Re: 283 and a Slight Hop Up

The problem with putting later model heads from a 350 onto a 283 is that the much larger combustion chambers will kill the compression on a 283. It will drop to likely 7 or 7.5-1. This is one of the reasons that the HO305 heads are widely used when upgrading a 283. The HO305 heads have 1.84 intake valves as opposed the the 1.74 intake valves in the old Power Pak heads, plus they have aprox 58cc combustion chambers.

Quote:
Originally Posted by James903 View Post
Just curious about heads for a 283. I still have the original 283 in my truck and it has surprisingly really good compression. I've considered leaving it in and putting a different cam, intake, and carb. I've heard people using 305 heads and I was wondering if I could use a set of 1.94s I have off of a 350 on it? They have newer valve guides. I've heard old 283 heads don't handle the newer fuel that well. I don't know the casting # off hand. I also have a set of double hump 2.02 heads, but I figure they would be better on a 350. My guess is I could use them but the compression will be different??
Quote:
Originally Posted by James903 View Post
Maybe I will try the 1.94s with the bigger cam. I kinda like the idea of a couple extra mounting holes on the front in the newer heads. I'm actually more curious how much better the 283 will run with some of the mods (carb,intake,cam,and different heads)
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