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Old 10-27-2011, 06:35 AM   #1
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Join Date: Aug 2011
Location: Atlanta, Ga
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Car: 82 Firebird/ 79 Camaro Berlinetta
Engine: 151 Pontiac Iron Duke TBI/ 305 SBC
Transmission: THM200/ THM200r4
Axle/Gears: 2.93/ 2.41

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Will a Chevy or Pontiac TH350 bolt to a Iron Duke?

My 82 fbird has the Iron Duke with the Th200 and its slipping horribly, I know I can pay for a rebuild but for the price I kinda want to put something stronger behind the duke?

Summit down the street from me sales there reman 350s for nothing with warrenty but I have no idea about bolt patterns?

Thanks for any info
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Old 10-27-2011, 06:56 PM   #2
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Re: Will a Chevy or Pontiac TH350 bolt to a Iron Duke?

If memory serves, that thing has the BOP pattern. So a BOP 350 should fit without much effort.

Post a pic of the BH from the front, where it would meet the engine if installed, and we can maybe identify the bolt pattern.
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Old 10-27-2011, 07:31 PM   #3
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Re: Will a Chevy or Pontiac TH350 bolt to a Iron Duke?

Depends on year. Early Duke's had an SBC pattern, later ones had the 60* Metric pattern.
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Old 10-27-2011, 08:44 PM   #4
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Re: Will a Chevy or Pontiac TH350 bolt to a Iron Duke?

If my current transmission pan says metric on it would that clarify the 60* metric pattern?

and sofakingdom you mean take a pic of the block with the transmission off showing the flywheel?
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Old 10-28-2011, 01:46 AM   #5
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Re: Will a Chevy or Pontiac TH350 bolt to a Iron Duke?

Quote:
Originally Posted by trevorsmith82 View Post
If my current transmission pan says metric on it would that clarify the 60* metric pattern?
No. The 200, 200-4R and 700-R4 had that on the pan, regardless of bellhousing pattern and each came with at least 2 different patterns.

Quote:
and sofakingdom you mean take a pic of the block with the transmission off showing the flywheel?
by process of elimination, google "chevrolet 2.5 bellhousing" and you'll know pretty quickly what the 60deg. engine bolt pattern looks like and can compare to yours, thus answering your question.

Last edited by jmd; 10-28-2011 at 02:03 AM.
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Old 10-28-2011, 07:00 AM   #6
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Re: Will a Chevy or Pontiac TH350 bolt to a Iron Duke?

Since the trans is dead and you therefore already have it out, take a pic of it from the front, where it bolts to the block. Pretty easy to identify the pattern.
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Numquam ponenda est pluralitas sine necessitate.
William of Ockham, c. 1330 AD, from Quaestiones et decisiones in quattuor libros Sententiarum Petri Lombardi

Roughly paraphrased into modern English, and applied to figuring out what's wrong with your car:

The simplest explanation that fits all the facts is probably the right one.
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Old 10-28-2011, 11:20 AM   #7
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Car: 82 Firebird/ 79 Camaro Berlinetta
Engine: 151 Pontiac Iron Duke TBI/ 305 SBC
Transmission: THM200/ THM200r4
Axle/Gears: 2.93/ 2.41

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Re: Will a Chevy or Pontiac TH350 bolt to a Iron Duke?

I dont have the trans out it will be once i can get it to a friends house with a car lift so much better than do it at my place i dont have flat ground anywhere

and aaron goin with this source http://en.wikipedia.org/wiki/List_of...using_patterns
my starter being located on the left side if viewed from the fly wheel it looks like cv8
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Old 10-28-2011, 04:46 PM   #8
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Re: Will a Chevy or Pontiac TH350 bolt to a Iron Duke?

If it looks like the Chevy pattern then a Chevy trans should fit it.

Just gotta make sure which side the starter is on; driver's side, or pass side. Not sure what that other "left" stuff is saying.
__________________
Numquam ponenda est pluralitas sine necessitate.
William of Ockham, c. 1330 AD, from Quaestiones et decisiones in quattuor libros Sententiarum Petri Lombardi

Roughly paraphrased into modern English, and applied to figuring out what's wrong with your car:

The simplest explanation that fits all the facts is probably the right one.
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Old 10-28-2011, 04:46 PM
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