Porterbuilt Big Block chevy - The 1947 - Present Chevrolet & GMC Truck Message Board Network

ol_skool_chevy · 05-24-2016, 02:05 PM

Anyone running the Porterbuilt with a big block Chevy Mark IV engine?
I have a Porterbuilt level 3 ordered and I just had a 496 big block built for it but I have never seen a big block with porterbuilt. any input on how the fit is?
It must fit, the big block was a option when ordering

jetboat 4 · 05-24-2016, 09:44 PM

I've done a 502 ramjet install with a pb dm that came with the truck, not impressed with there customer service.

ol_skool_chevy · 05-24-2016, 11:39 PM

Quote:

Originally Posted by jetboat 4

I've done a 502 ramjet install with a pb dm that came with the truck, not impressed with there customer service.

Did you happen to have to notch your oil pan to clear the rack steering?...I saw one that had to. There is VERY little on Big block DM

jetboat 4 · 05-25-2016, 02:01 AM

No I lowered the rack which will help with the bump steer ( the more you keep your rack parallel the better for this) My main goal is to get the truck to handle so i lowered the motor so the pan is 3/4 " above the dm. and I moved the engine back 1 1/4.

Grambo1965 · 06-05-2016, 06:13 AM

I'm running a level 3 dropmember with a 396, the rack and pan are close but with the motor/trans dropping back at 5 degrees for the driveshafts it brings it up and off the rack, although not by much.

ol_skool_chevy · 06-05-2016, 10:43 AM

Quote:

Originally Posted by Grambo1965

I'm running a level 3 dropmember with a 396, the rack and pan are close but with the motor/trans dropping back at 5 degrees for the driveshafts it brings it up and off the rack, although not by much.

Great to know. I'm about ready to set my motor. I seems not a lot of people put Big Blocks with the Porterbuilds. What Headers did you use?

Grambo1965 · 06-05-2016, 11:05 AM

I'm using Hedman headers, Porterbuilt recommended these. Perfect (Tight) fit, no bending or "massaging" needed. The driver side collectors face straight down on exit so i had to buy a hard 90 degree stainless elbow to keep things tucked. i can only imagine why people stray away from the monsters, everything is tight....

Hardworkinguy · 06-05-2016, 03:49 PM

Hey,Grambo-I'd like to see your truck sometime. I have a 66 GMC 454 in Buxton Maine.

ol_skool_chevy · 06-05-2016, 08:42 PM

Quote:

Originally Posted by Hardworkinguy

Hey,Grambo-I'd like to see your truck sometime. I have a 66 GMC 454 in Buxton Maine.

Agree

Grambo1965 · 06-05-2016, 08:58 PM

I'm gonna try and attach some photos to give you guys an idea of what I'm starting with and where I've gotten to

Grambo1965 · 06-05-2016, 09:02 PM

Another one.

Grambo1965 · 06-05-2016, 09:03 PM

Before I got going.

Hardworkinguy · 06-06-2016, 09:45 AM

That looks great!

ol_skool_chevy · 06-07-2016, 10:48 PM

what headers are those?....any photo of the oil pan clearance to the rack steering

jetboat 4 · 07-10-2016, 10:54 PM

lowered rack 1 1/2"

ol_skool_chevy · 11-03-2016, 10:04 AM

Did you have to make clearance for your valve covers against the firewall?..Photos?

05-24-2016, 02:05 PM	#1
ol_skool_chevy Registered User Join Date: May 2010 Location: Hillsboro, Oregon 97123 Posts: 1,300	Porterbuilt Big Block chevy Anyone running the Porterbuilt with a big block Chevy Mark IV engine? I have a Porterbuilt level 3 ordered and I just had a 496 big block built for it but I have never seen a big block with porterbuilt. any input on how the fit is? It must fit, the big block was a option when ordering __________________ Measure with a yard stick Mark with Chalk Cut with a torch Built it yourself, don't count on others to to do it for you or with you. It will never get done

05-24-2016, 09:44 PM	#2
jetboat 4 Registered User Join Date: Oct 2015 Location: Stony Plain alberta Posts: 9	Re: Porterbuilt Big Block chevy I've done a 502 ramjet install with a pb dm that came with the truck, not impressed with there customer service. Attached Images

05-25-2016, 02:01 AM	#4
jetboat 4 Registered User Join Date: Oct 2015 Location: Stony Plain alberta Posts: 9	Re: Porterbuilt Big Block chevy No I lowered the rack which will help with the bump steer ( the more you keep your rack parallel the better for this) My main goal is to get the truck to handle so i lowered the motor so the pan is 3/4 " above the dm. and I moved the engine back 1 1/4.

06-05-2016, 06:13 AM	#5
Grambo1965 Registered User Join Date: Oct 2014 Location: South Berwick, Maine Posts: 19	Re: Porterbuilt Big Block chevy I'm running a level 3 dropmember with a 396, the rack and pan are close but with the motor/trans dropping back at 5 degrees for the driveshafts it brings it up and off the rack, although not by much.

06-05-2016, 11:05 AM	#7
Grambo1965 Registered User Join Date: Oct 2014 Location: South Berwick, Maine Posts: 19	Re: Porterbuilt Big Block chevy I'm using Hedman headers, Porterbuilt recommended these. Perfect (Tight) fit, no bending or "massaging" needed. The driver side collectors face straight down on exit so i had to buy a hard 90 degree stainless elbow to keep things tucked. i can only imagine why people stray away from the monsters, everything is tight....

06-05-2016, 03:49 PM	#8
Hardworkinguy Registered User Join Date: Nov 2015 Location: Buxton,Maine Posts: 30	Re: Porterbuilt Big Block chevy Hey,Grambo-I'd like to see your truck sometime. I have a 66 GMC 454 in Buxton Maine.

06-05-2016, 08:58 PM	#10
Grambo1965 Registered User Join Date: Oct 2014 Location: South Berwick, Maine Posts: 19	Re: Porterbuilt Big Block chevy I'm gonna try and attach some photos to give you guys an idea of what I'm starting with and where I've gotten to Attached Images

06-05-2016, 09:02 PM	#11
Grambo1965 Registered User Join Date: Oct 2014 Location: South Berwick, Maine Posts: 19	Re: Porterbuilt Big Block chevy Another one. Attached Images

06-05-2016, 09:03 PM	#12
Grambo1965 Registered User Join Date: Oct 2014 Location: South Berwick, Maine Posts: 19	Re: Porterbuilt Big Block chevy Before I got going. Attached Images

06-06-2016, 09:45 AM	#13
Hardworkinguy Registered User Join Date: Nov 2015 Location: Buxton,Maine Posts: 30	Re: Porterbuilt Big Block chevy That looks great!

06-07-2016, 10:48 PM	#14
ol_skool_chevy Registered User Join Date: May 2010 Location: Hillsboro, Oregon 97123 Posts: 1,300	Re: Porterbuilt Big Block chevy what headers are those?....any photo of the oil pan clearance to the rack steering __________________ Measure with a yard stick Mark with Chalk Cut with a torch Built it yourself, don't count on others to to do it for you or with you. It will never get done

07-10-2016, 10:54 PM	#15
jetboat 4 Registered User Join Date: Oct 2015 Location: Stony Plain alberta Posts: 9	Re: Porterbuilt Big Block chevy lowered rack 1 1/2" Attached Images

11-03-2016, 10:04 AM	#16
ol_skool_chevy Registered User Join Date: May 2010 Location: Hillsboro, Oregon 97123 Posts: 1,300	Re: Porterbuilt Big Block chevy Did you have to make clearance for your valve covers against the firewall?..Photos? __________________ Measure with a yard stick Mark with Chalk Cut with a torch Built it yourself, don't count on others to to do it for you or with you. It will never get done



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