3rd Gen / L98 Engine Tech 1982 - 1992 Engine Related

1991 RS 5.0 TBI

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Old 08-06-2002, 04:55 AM
  #16  
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<font face="Verdana, Arial" size="2">Originally posted by badassbowtie400:
if i took and replaced the heads with cast iron TBI heads that are used on the 285HP 350 crate engine
would this increase my power?
</font>
No, because the 350 head's combustion chambers are too large. Just go to the junkyard and find a set of heads off a carbed 305 and work with them. Use the Standard Abrasives Deluxe head porting kit
OR
follow my instructions here: http://www.thirdgen.org/techbb2/show...233#post751233

The Thirdgen.org site is the best on the web and you will find a lot more info on what you need there than you will here.

[This message has been edited by Sitting Bull (edited August 06, 2002).]
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Old 08-06-2002, 11:36 AM
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the cc of 350 heads will be larger- late modle is 64cc VS 58cc for 305's.

But if your gonna get 1.94 intakes- just get the 350 heads and get them milled.

I always thought cast iron L98 heads would be a good budget choice,
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Old 08-07-2002, 01:46 AM
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can i take of the single snorkel air cleaner that came stock and replace it with a dual snorkel?


would i get a performance difference?
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Old 08-07-2002, 03:48 AM
  #19  
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<font face="Verdana, Arial" size="2">Originally posted by badassbowtie400:
can i take of the single snorkel air cleaner that came stock and replace it with a dual snorkel? would i get a performance difference?</font>
You bet! It will knock a full quarter second off your ET. This guy always seems to have one for sale. http://members.***.net/iroczdave1/IR...rts%20Page.htm

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Old 08-08-2002, 12:46 AM
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<font face="Verdana, Arial" size="2">Originally posted by Sitting Bull:
You bet! It will knock a full quarter second off your ET. This guy always seems to have one for sale. http://members.***.net/iroczdave1/IR...rts%20Page.htm

</font>
would a throttle body spacer be a good idea

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Old 08-08-2002, 03:34 AM
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<font face="Verdana, Arial" size="2">Originally posted by badassbowtie400:
would a throttle body spacer be a good idea</font>
You got me. I just don't know much about TBI at all. I do know they make an adapter for running it on a carb-style Performer intake, but that's not really a spacer.

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