Use 302-1 oil pan for 4" stroker crank - Team Camaro Tech
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post #1 of 12 (permalink) Old May 21st, 16, 06:41 PM Thread Starter
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Anne
 
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Use 302-1 oil pan for 4" stroker crank

Thought I would post this because Google doesn't seem to know......

A 4" stroker crank will not clear the 302-2 Holley pan. This is the pan with the best clearance for first-gens; it will sit as low as possible in the engine bay.

But...the 302-1 will clear a stroker crank, but it requires using the tall 307 frame stands and slightly shimming the motor mounts.

Found this out in another thread courtesy of Vegas$69 and 67Rally. Thanks !

If you want to keep the engine lower with the 302-1 pan , simply notch the subframe for clearance.

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post #2 of 12 (permalink) Old May 22nd, 16, 06:35 AM
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The Holley 302-2 pan can also be easily modified to work in a stroker application and many users have done it with great success. Raising the engine, or even running it at the height that results from using swap plates and the stock frame stands has a negative effect on the vehicle's center of gravity and your ability to acheive optimized and minimized U-joint working angles without cutting the tunnel open. The Hooker 1st-gen engine brackets and transmission crossmembers and the Holley 302-2 pan were designed specifically to negate those issues.
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post #3 of 12 (permalink) Old May 22nd, 16, 05:56 PM Thread Starter
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Re: Use 302-1 oil pan for 4" stroker crank

Quote:
Originally Posted by toddoky View Post
The Holley 302-2 pan can also be easily modified to work in a stroker application and many users have done it with great success. Raising the engine, or even running it at the height that results from using swap plates and the stock frame stands has a negative effect on the vehicle's center of gravity and your ability to acheive optimized and minimized U-joint working angles without cutting the tunnel open. The Hooker 1st-gen engine brackets and transmission crossmembers and the Holley 302-2 pan were designed specifically to negate those issues.
I'm not really scared of modifying the 302-2 pan ; just can't find any info on how to do it.

I know the point of contact with the crank is in the middle front of the pan and it needs to be lowered 1/4".

So the 1/4" drop in the middle should extend from the front all the way to the sump ?

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post #4 of 12 (permalink) Old May 23rd, 16, 06:35 AM
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Re: Use 302-1 oil pan for 4" stroker crank

Quote:
Originally Posted by Lawrence454 View Post
I'm not really scared of modifying the 302-2 pan ; just can't find any info on how to do it.

I know the point of contact with the crank is in the middle front of the pan and it needs to be lowered 1/4".

So the 1/4" drop in the middle should extend from the front all the way to the sump ?
Here's a couple of photos from a member on another forum showing the basic principal of the modification...
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post #5 of 12 (permalink) Old May 23rd, 16, 07:43 AM
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Re: Use 302-1 oil pan for 4" stroker crank

Quote:
Originally Posted by Lawrence454 View Post
I'm not really scared of modifying the 302-2 pan ; just can't find any info on how to do it.

I know the point of contact with the crank is in the middle front of the pan and it needs to be lowered 1/4".

So the 1/4" drop in the middle should extend from the front all the way to the sump ?
that's good info

My Mistress rebuild...
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post #6 of 12 (permalink) Old May 23rd, 16, 06:32 PM Thread Starter
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Anne
 
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Re: Use 302-1 oil pan for 4" stroker crank

Quote:
Originally Posted by toddoky View Post
Here's a couple of photos from a member on another forum showing the basic principal of the modification...
Thanks Todd. That does look easy.

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post #7 of 12 (permalink) Old Jun 21st, 16, 06:51 PM
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Re: Use 302-1 oil pan for 4" stroker crank

I ditched the Holley pan and installed a Mast Motorsports pan. It clears the 4" stroker crank in my 427ci LSX no problem, and also worked perfectly with the lower Holley/Hooker headers, engine mounts, and trans mount (T56). I will say that the Holley pan was nicer casting quality, but the Mast is acceptable.

Tony

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post #8 of 12 (permalink) Old Jun 22nd, 16, 09:08 AM
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Re: Use 302-1 oil pan for 4" stroker crank

Does anyone know if the ATS road race oil pan will clear the fame without notching if the Holley motor mounts are used? I have searched and searched but I am unable to find a definitive answer. I have this pan on my current motor and the Holley mounts are in the garage as well. I am planning on using full height solid body mounts. I plan a test fitment, but would love to hear if this combo works before I go through the trouble.

I pulled the following dimensions out of the PDF manuals:

ATS Depth - 1.75"
Holley 302-1 Depth - 2.42"
Holley 302-2 Depth - 1.25"
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post #9 of 12 (permalink) Old Jun 22nd, 16, 06:26 PM
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Re: Use 302-1 oil pan for 4" stroker crank

Well, if the Mast pan clears, then the ATS pan has a good chance as well. I was able to find the dimensions of the Mast pan on their website. The front of the Mast pan is 1.71" to 1.95".
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post #10 of 12 (permalink) Old Jul 11th, 17, 07:33 AM
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Re: Use 302-1 oil pan for 4" stroker crank

FWIW I bought 1 too many Holley 302-2 pans, if someone is looking for one please PM me.
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post #11 of 12 (permalink) Old Jul 11th, 17, 01:23 PM
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Re: Use 302-1 oil pan for 4" stroker crank

John, this post is a year old. You could use the classified section to sell your pan. Probably more traffic as well. Just an FYI.

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post #12 of 12 (permalink) Old Aug 18th, 17, 10:42 AM
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Re: Use 302-1 oil pan for 4" stroker crank

I know it's an old thread, but Holley will soon be releasing the 302-3 pan which is a revision of the 302-2 pan. It has provisions for a 4" stroker crank and oil drain back ports for turbos.

Project: 1968 Camaro 5.3, T56, Z51 brakes, 12 bolt, etc.


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