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Author Topic:   need a quick answer/ I believe they're the same
bobaluuu
Dirt Freak

Total posts: 487
posted November 07, 2005 06:02 PM  
which stock heads are better for an enduro race 333882/462624. I think they're both c-r-a-p heads. you guys know better than me and Im building it tomorrow nite.

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Light it up, Baby!

racer17j
Dirt Forum Champ
Total posts: 5480
posted November 07, 2005 06:06 PM  
thanks pardner, both have 194/150's the 882 has exh valve that sits higher above the seat and looks like its probably been cut 20 thou more so I;ll go that direction. by the way anyone heard from c21 anymore, he was a real tech head. I miss him weighing on some of this stuff.

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Light it up, Baby!

dirtyboy58
Dirt Full Roller

Total posts: 46
posted November 08, 2005 03:48 PM  
CLICK ON MENU GO TO TOOLS AND IT WILL TELL YA WHAT IS WHAT

bobaluuu
Dirt Freak

Total posts: 487
posted November 08, 2005 08:58 PM  
theres very little what is what on these two heads listed there but thanks anyway. bob

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Light it up, Baby!

Larry Seals
Dirt Full Roller

Total posts: 58
posted December 07, 2005 09:31 AM  
Try looking here http://www.mortec.com/borstrok.htm

wermm
Dirt Maniac

Total posts: 111
posted December 07, 2005 01:08 PM  
before I got a set of 487's I ran the 882's and they worked just fine for me. With all things the same just switching heads I didn't notice a big diff. I would think that on an Enduro either would work just fine.

supwitchew
Dirt Maniac

Total posts: 123
posted December 07, 2005 01:58 PM  
I agree. I've run 882's and they work just fine. They say they are crack prone when over heated, but I have never experienced it. Not saying it doesn't happen. Just hasn't happened to me.

88S RACING
Dirt Roller

Total posts: 9
posted December 07, 2005 03:34 PM  
I was told by my engine builder that the 624's are known for cracking? I ran the 882's had great luck???? Hope it helps you.

oceanridge motorsports
Dirt Full Roller

Total posts: 44
posted December 08, 2005 06:36 PM  
624's do tend to crack , some 882's are crack prone , the later years were . The casting is thinner , the early year 882's are a good tough head . Not huge power makers , but reliable .

trynmods
Dirt Full Roller

Total posts: 57
posted December 08, 2005 06:47 PM  
How would 441 heads do on the same engine compared to 882? At what point on the track would the differance be noticed?

oceanridge motorsports
Dirt Full Roller

Total posts: 44
posted December 09, 2005 05:07 PM  
441 is better head , like the 993 , the ports flow slightly more volume than an 882 .

wermm
Dirt Maniac

Total posts: 111
posted December 09, 2005 08:30 PM  
are the 993's as good as 487's? I have a set of both and was just wondering

racing8r
Dirt Newbie

Total posts: 4
posted December 10, 2005 09:11 AM  
i have used the same set of 882s for 3years now i have them checked every year haven had any problems yet

oceanridge motorsports
Dirt Full Roller

Total posts: 44
posted December 11, 2005 05:57 PM  
487 is said to be a little better than the 993 , on par with the 441 . It still is just finding the best of the worst . If they let you run center bolts ,but not a vortec , try the 217 , it is almost on par with a double hump .They can be found on mid to late 80's g.m. "crate motors" ie. replacment motors . Finding one is not as hard as it would seem . The valve covers just have a mercruiser 5.7 on them . They stuck bunches of them in boats .Oh , and you have to spot face your center intake bolts from 90 to 72 degrees .

  

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