SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: 2savage4you on August 12, 2007, 08:45:25 AM

Title: Heads, whats the difference?
Post by: 2savage4you on August 12, 2007, 08:45:25 AM: Whats the difference between the manual heads and the automatic heads? besides the tranny. Does one allow for more rpm's??

2sav
Title: Re: Heads, whats the difference?
Post by: hotrod56cars on August 12, 2007, 09:54:26 AM: Quote from: 2savage4you on August 12, 2007, 08:45:25 AM
Whats the difference between the manual heads and the automatic heads? besides the tranny. Does one allow for more rpm's??

2sav

There is no difference.
Title: Re: Heads, whats the difference?
Post by: 2savage4you on August 12, 2007, 12:01:28 PM: Quote from: hotrod56cars on August 12, 2007, 09:54:26 AM
There is no difference.

From i get so far is that the automatics are small valve and the manual is big valve for the muscle cars. Sound about right? i got this off the olds website. I found a set of heads on Ebay and just want to get the right ones. G a w30

2sav
Title: Re: Heads, whats the difference?
Post by: hotrod56cars on August 12, 2007, 12:04:04 PM: Quote from: 2savage4you on August 12, 2007, 12:01:28 PM
From i get so far is that the automatics are small valve and the manual is big valve for the muscle cars. Sound about right? i got this off the olds website. I found a set of heads on Ebay and just want to get the right ones. G a w30
2sav

I sold a set of Ga heads on eBay, like $240 or something rebuilt. Good heads. Might be a difference on the Olds between stick and auto trans, I dunno, I seriously doubt there's a difference. Wouldn't make sense to have two different types of Ga heads...
Title: Re: Heads, whats the difference?
Post by: 2savage4you on August 12, 2007, 12:17:08 PM: Quote from: hotrod56cars on August 12, 2007, 12:04:04 PM
I sold a set of Ga heads on eBay, like $240 or something rebuilt. Good heads. Might be a difference on the Olds between stick and auto trans, I dunno, I seriously doubt there's a difference. Wouldn't make sense to have two different types of Ga heads...

No the G a heads are off a 1972 442 and a manual tranny. Should be a good deal. I HOPE. He wont answer my email for the shipping cost, i just hope i dont get raped if i am the actual buyer.

2sav
Title: Re: Heads, whats the difference?
Post by: hotrod56cars on August 12, 2007, 12:33:47 PM: 442

4 speed
4 barrel
2 wheels driven (posi)
Title: Re: Heads, whats the difference?
Post by: thecraz on August 12, 2007, 03:33:26 PM: 442 4 speed 4 barrel 2 duel exs
Title: Re: Heads, whats the difference?
Post by: hotrod56cars on August 12, 2007, 03:55:28 PM: Quote from: thecraz on August 12, 2007, 03:33:26 PM
442 4 speed 4 barrel 2 duel exs

:D Yea, you're right ;D
Title: Re: Heads, whats the difference?
Post by: GlassCutter on August 12, 2007, 09:16:47 PM: I never really wondered about that 442 stuff. Its a sick individual that knows a bunch of Oldsmobile trivia. You guys must fart dust.
Title: Re: Heads, whats the difference?
Post by: thecraz on August 12, 2007, 09:43:12 PM: hey i was a olds and chevy dealer mech 1963 to 1970
Title: Re: Heads, whats the difference?
Post by: hotrod56cars on August 12, 2007, 10:13:32 PM: Quote from: GlassCutter on August 12, 2007, 09:16:47 PM
I never really wondered about that 442 stuff. Its a sick individual that knows a bunch of Oldsmobile trivia. You guys must fart dust.

... and cobwebs >:D
Title: Re: Heads, whats the difference?
Post by: TIMINATOR on August 16, 2007, 07:15:22 AM: You can install big stainless valves in any of the 455 heads, and port them. Fill the crossovers with aluminum, weld the exhaust port bridge and they come out all the same, and cheaper than the Ebk heads. Read the "Practical Olds Motor" article in Hotboat from a year or 2 ago, it explains much about the shortblock too. TIMINATOR