Small Block & Big Block Chevy Specific Mouse & Rat Motor Discussion & Conversions

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Old Nov 30, 2008 | 07:00 AM
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I have a 355 and was going to get a new set of heads and I am not sure which ones would be best. First off here is what I have. It is a 355 with flat top pistons it has an old comp magnum cam (specs are 244@50 with 501 lift) I have a wiend stealth intake and an edelbrock 750 carb. Exhaust is 1 5/8 longtubes with 2 1/2 exhaust. It is in an S10 pickup. It has a Th400 with 3200 stall and 3.73 gears. There is a guy on ebay selling Iron Eagles bare for 399.00. I can either get the 180cc or 200cc which ones will be a better choice for my setup?
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Old Nov 30, 2008 | 07:10 AM
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hey you got that thing running yet?
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Old Nov 30, 2008 | 07:41 AM
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yeah but those old heads that are on it do not have accessory holes. I am having a hard time figuring out how to mount the alternator. I dont want to use the old F bracket that bolts under the header bolts, and there isnt enough room for a low mount. So I thought that was a good excuse for a set of aftermarket heads. lol
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Old Nov 30, 2008 | 07:49 AM
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lol sounds about right, good luck with that. send some pics
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Old Nov 30, 2008 | 07:51 AM
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Ok cool
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Old Nov 30, 2008 | 12:03 PM
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I would use the 200cc heads, but i would spend the money for a set that are assembled.
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Old Nov 30, 2008 | 09:12 PM
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go with the 200cc's and leave room to grow without having to buy new heads. what kind of heads do you have now? i am assuming fuelie heads since you said no acc. holes.
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Old Dec 3, 2008 | 05:09 PM
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I was told that they were 1967 327 heads. Is a new set going to make a huge difference? When I did the heads and cam on my LS1 it was like night and day. I just dont want to be disappointed.lol Maybe someone has a better choice for me.
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Old Dec 3, 2008 | 08:27 PM
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Those old fuelie heads are outdated and flow nothing to the aftermarket, even the cheap aftermarket parts do WAY better.
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Old Dec 6, 2008 | 10:38 PM
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Well the wife cleared me to get the AFR 180 heads. I think they should give me a pretty good boost. I do have 1 question though. I am going to also switch to a roller cam by comp, with 230/236 @50 with 510 and 520 lift on a 110lsa. Will this give me PTV clearance issues?
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Old Dec 6, 2008 | 11:43 PM
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nothing wrong wih some good ole' 062 vortecs
cheep too
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Old Dec 7, 2008 | 03:56 AM
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Originally Posted by hot1le
Well the wife cleared me to get the AFR 180 heads. I think they should give me a pretty good boost. I do have 1 question though. I am going to also switch to a roller cam by comp, with 230/236 @50 with 510 and 520 lift on a 110lsa. Will this give me PTV clearance issues?
The clearance should be fine, but you need to check it anyway. Those heads are excellent, and that cam will work very well with them. You will be very happy with them.

Originally Posted by NemeSS
nothing wrong wih some good ole' 062 vortecs
cheep too
Those heads are great, i think i am using too much cam for mine though.
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Old Dec 7, 2008 | 08:20 AM
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cool thanks
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Old Dec 7, 2008 | 07:31 PM
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I ran a set of 72/200cc iron eagles on my 357 and they were a great improvement, had dual springs fully assembled with screw in studs and guide plates for cheap. Alan grove has brackets for use with the acc if your using heads without the holes.
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Old Dec 7, 2008 | 07:46 PM
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Originally Posted by hot1le
Well the wife cleared me to get the AFR 180 heads. I think they should give me a pretty good boost. I do have 1 question though. I am going to also switch to a roller cam by comp, with 230/236 @50 with 510 and 520 lift on a 110lsa. Will this give me PTV clearance issues?
You sholdtn have any ptv cleance issues at all. but you can put some clay on the pistion and just put the head on and turn it over by hand a few times. i have ran way bigger than that with afr 220s
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Old Dec 9, 2008 | 09:44 AM
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I switched from 1.96 exhaust heads on my 85 vette 383 to some Dart eagle 200cc and damn it threw me back in the seat. at least a 40hp difference if not more
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Old Dec 9, 2008 | 11:38 PM
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Originally Posted by 3.8redbird
I switched from 1.96 exhaust heads on my 85 vette 383 to some Dart eagle 200cc and damn it threw me back in the seat. at least a 40hp difference if not more
Not to mention across the board you probably felt more.
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Old Dec 22, 2008 | 06:13 PM
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Originally Posted by hot1le
Well the wife cleared me to get the AFR 180 heads. I think they should give me a pretty good boost. I do have 1 question though. I am going to also switch to a roller cam by comp, with 230/236 @50 with 510 and 520 lift on a 110lsa. Will this give me PTV clearance issues?
DEFINITELY step it up to the AFR 195, if not the 210.
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Old Jan 1, 2009 | 07:45 AM
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The reason I was wanting the AFR 180's is because the have 2.02 valves and the 195's have 2.08 valves. I am affraid that the valves wont clear the pistons then I open a whole new can of worms.
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Old Jan 1, 2009 | 07:50 PM
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the 195's have a 2.05, not a 2.08. They will clear just fine. As long they're not stock pistons, they will clear just fine...
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