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Old 02-11-2008, 09:51 PM
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Question 378450 heads 60 CC

I found these heads what are they good for?

Whould they improve my performance on my SB 400 {stone stock}

How would it run on pump gas







R

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Old 02-11-2008, 10:34 PM
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3951509 the 2nd generation 400 1980 & I drive it like a old man its in a 3+3 Dualie so I am looking for more torque.

Stump pulling

I have no Idea if its the dished pistons its a Bone stock ~ C~30 camper motor with 30,000 on it when installed. now 36,000

It is the High perf model [4 bbl]

Quote:
Not my favorite 305 head casting for budget head swapping but......
Now you have my attention ! {oh boy Oh BOY OOO BOY!!!}I need more power but am really stuck in the low budget land.

What kinda cam should I be looking @


Oh boy higher gas prices per gallon



Thanks for the info.




R
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Old 02-11-2008, 11:01 PM
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How much & what #'s of vortec heads are you talking about?

Here are the heads on it now.

462624 Heads



R
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Old 02-11-2008, 11:16 PM
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Kewl

thanks for the 411



R
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Old 02-12-2008, 12:10 PM
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Quote:
Originally Posted by Rob Keller
I found these heads what are they good for?

Whould they improve my performance on my SB 400 {stone stock}

How would it run on pump gas







R
The correct casting number is 376450. These are heads for the crappy 262, 267 engines; some also found their way onto 305s. Small valves, small ports early thin wall, crack prone castings, they don't like porting nor larger valves (they crack between the intake and exhaust seats and from the exhaust seat into the wall. Even modified they will be woefully inadequate for a 400 (327 or 350 for that matter). They are junk and need to be treated as such. It will cost a lot of money to make them marginally useful, money better spent on better heads. Been there, done that!

Bogie
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Old 02-12-2008, 12:19 PM
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http://www.competitionproducts.com/p...er=PCH353-DP-1

This is a repro of one of the best Vortec castings available the "906" and at 287.00 a piece fully assembled you really can't beat the price.


I purchased these 305 heads off ebay for $400 shipped to my door. I did quite a bit of porting but in hindsight I would have purchased the heads above if I had found them sooner.

http://cgi.ebay.com/ebaymotors/ws/eB...MEWN:IT&ih=016
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Old 02-12-2008, 12:21 PM
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Rob-

How is it that you have almost 4,000 posts but don't know about 305 and vortec heads anyways or maybe you do and I am preaching to the choir here.
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Old 02-12-2008, 07:19 PM
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Quote:
Originally Posted by Double_v23
Rob-

How is it that you have almost 4,000 posts but don't know about 305 and vortec heads anyways or maybe you do and I am preaching to the choir here.
The truth be known I am a old skool junk Yard dog.
I've killed more cars than I could ever possibly fix.

Plus while I was blissfully crushing tuners the technology past me by like the fast & the furious .

4 years ago I could not Copy & Paste or post a photo on the INTERNET
AND I thought I knew a thing or two about auto electrical systems until I met

Doc Vette {{RIP Brother}}

Quite sad if I must say so myself now some of the people I meet think I am a puter nerd {jokes on them}.

Anyone who has ever lost a race & or tried to catch up to a hot Blondie in a fast car knows its hard to make up ground.

Yea I put a 1980 Carbed 400 into a 1988 Chevy 3+3 dualie ripped all the puter stuff out {had a TBI 454}{had no motor @ all & Had to make due with what I had]

And Because I know I will not have to worry about needing a scanner to make my truck run.

Busts off every time like a old skool truck should.

So now 20 years behind the times ,I fight kicking & screaming into the future ,which coincides with my price range .LOL

Kids now a days have the whole world @ their finger tips where I had to go to the library read books & learn from the school of hard knocks.

I guess when someone says "Vortec" I immediately think TBI & computers .

I do believe I have been thinking incorrectly.


Damn I feel old & UN edumakated now

I have book marked all those threads on "quench" & stuff of that sort but have not read & understood it all. . . .YET.

If I can keep two vehicles on the road @ the same time I might be able to play with one.

I hope this aleaves your fears about preaching to the choir.

I am not a attorney ,I would not ask a question I already knew the answer to .

Those Stats up in the corner are kinda prejudicial but it gives you a feel about who you are talking to ,but not a accurate judgment of the real person behind the words.

Quote:

ME

"ain't no Measure of a man by the size of his wallet"

LOL

As Always;
Thanks to all for the replies & information .

Sorry for the long winded answer ,but you asked for it!





R
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Old 02-12-2008, 09:09 PM
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Quote:
Originally Posted by oldbogie
The correct casting number is 376450. These are heads for the crappy 262, 267 engines; some also found their way onto 305s. Small valves, small ports early thin wall, crack prone castings, they don't like porting nor larger valves (they crack between the intake and exhaust seats and from the exhaust seat into the wall. Even modified they will be woefully inadequate for a 400 (327 or 350 for that matter). They are junk and need to be treated as such. It will cost a lot of money to make them marginally useful, money better spent on better heads. Been there, done that!

Bogie
Bogie, some of these heads were heavy castings (as heavy as 441's and the 60's era stuff). I have a pair off of one of those little 1975 3.1 stroke motors and they are thick! I'm not sure of the casting number I have but they had 55cc chambers when I started and ended up with 64cc after unshrouding. Ported with 1.94/1.5 valves they work well on a 350 4WD combo I put together but they do sign off at 5500rpm. I just wanted to clarify-some of these little engines had heavy castings.
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