Big Block and Firewall Clearance - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

65stepside · 12-13-2007, 12:32 AM

What headers did you use.
Thx

Quote:

Originally Posted by Chevy Fleetside

i got mine fitted finally.. I used the motormouts on this page. The ones in the middle of the page on the bottom.. http://www.truckandcarshop.com/trucks60_72/t60_097.html This was so I could set the engine back as far as I could. If you move it forward you can just use the later mounts but I thought they were to ugly for me.. I look at ugly in the mirror I don't want to see it in my truck...

Iron-Butt · 12-12-2007, 02:18 PM

I used those same engine stands and mounts to. My frame was not notched so I had to cut the frame so they would bolt in the rear holes.

**Chevy Fleetside** · 12-13-2007, 09:27 AM

I too had to cut the frame. I just didn't do a straight cut so I made it wavey.. Those headers are Hedman Elite headers.. Here is the link. They went up in price since I bought mine. I paid $363 for them.. Check Jegs also... http://store.summitracing.com/partde...5&autoview=sku

NF65Fleetside · 12-13-2007, 03:46 PM

ok so its almost time to drop this big biatch into the truck, I can use the sbc mounts but do I need the 62 and up towers and or can I use the small block ones as well?

**Chevy Fleetside** · 12-13-2007, 04:28 PM

The problem with the small block perches are header clearance. Unless you have some custom made it will be hard to clear them. The stock manifold will not work either.. Never know you may get lucky and not have any problems.. If anything get some later model mounts, they are inexpensive.

NF65Fleetside · 12-13-2007, 04:41 PM

Quote:

Originally Posted by Chevy Fleetside

.... If anything get some later model mounts, they are inexpensive.

Mounts or perches? both for big blocks are pretty costly...about $78 apiece.

**Chevy Fleetside** · 12-13-2007, 05:22 PM

Try a pick and pull and get some from a 73 to 87.. You have to trim the frame on both sides about 1/2" .. You will probably have to redrill for new holes also. Try and set the engine back as far as you can... OH yeah.. Yes I mean perches and mounts. I would try the stock ones you have first though.. You might have trouble with the left side header but the right one will clear.. Go Figure.. At least these are the problems I had..

NF65Fleetside · 12-13-2007, 08:11 PM

ok, thats kinda what I figured...geeesh this sounds like it will be waaaaay more than a days swap. guh! soooo getting jitters about doing it now. Ill definetly post a step by step of my swap for the way I do it. Stoked on the info you guys are posting but just hearing way too many different options/ways of going about doing it.

Slmd92DIME · 12-14-2007, 12:52 AM

Not to hijack the thread but... what do I need to do with mine? I have a 4 inch Z and 1 inch lowered cab mounts. Do I need to move my smalll block up 3 inches? Thsi is what i have heard I have just been making sure.... THanks guys

NF65Fleetside · 12-14-2007, 03:14 PM

Quote:

Originally Posted by Slmd92DIME

Not to hijack the thread but... what do I need to do with mine? I have a 4 inch Z and 1 inch lowered cab mounts. Do I need to move my smalll block up 3 inches? Thsi is what i have heard I have just been making sure.... THanks guys

Might want to post this one in the z'd frames thread....but yah i would think you definetly would have to move the engine forward to clear the lower position of the firewall

12-12-2007, 02:18 PM	#2
Iron-Butt 454 club Join Date: Oct 2002 Location: Oklahoma Posts: 1,348	Re: Big Block and Firewall Clearance I used those same engine stands and mounts to. My frame was not notched so I had to cut the frame so they would bolt in the rear holes. __________________ David 1965 Chevrolet c-10 454 automatic Custom bbw swb. 1965 Chevrolet C-10 swb (Sold) 1963 Chevrolet C-10 6 Cyl automatic with dual exhaust, pb, ps and 17's. R.I.P "I will miss you. 1967 Chevrolet C-10 6 Cyl Custom lwb 1939 Chevrolet Coupe, 350 v8 automatic. 1935 Chevrolet 2 Dr Standard in the works. 2015 Harley Davidson Street Glide. 2023 Chevrolet Stingray Z51 Convertible. I never want to grow up.

12-13-2007, 09:27 AM	#3
Chevy Fleetside Registered User Join Date: Sep 2006 Location: San Francisco Posts: 4,781	Re: Big Block and Firewall Clearance I too had to cut the frame. I just didn't do a straight cut so I made it wavey.. Those headers are Hedman Elite headers.. Here is the link. They went up in price since I bought mine. I paid $363 for them.. Check Jegs also... http://store.summitracing.com/partde...5&autoview=sku __________________ "A man and his truck, what a beautiful thing" 65 Short Fleetside BBC 65 Long Fleetside 283 3 on the tree for now. my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=259536

12-13-2007, 03:46 PM	#4
NF65Fleetside Registered User Join Date: Feb 2007 Location: Los Angeles Posts: 674	Re: Big Block and Firewall Clearance ok so its almost time to drop this big biatch into the truck, I can use the sbc mounts but do I need the 62 and up towers and or can I use the small block ones as well?

12-13-2007, 04:28 PM	#5
Chevy Fleetside Registered User Join Date: Sep 2006 Location: San Francisco Posts: 4,781	Re: Big Block and Firewall Clearance The problem with the small block perches are header clearance. Unless you have some custom made it will be hard to clear them. The stock manifold will not work either.. Never know you may get lucky and not have any problems.. If anything get some later model mounts, they are inexpensive. __________________ "A man and his truck, what a beautiful thing" 65 Short Fleetside BBC 65 Long Fleetside 283 3 on the tree for now. my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=259536

12-13-2007, 05:22 PM	#7
Chevy Fleetside Registered User Join Date: Sep 2006 Location: San Francisco Posts: 4,781	Re: Big Block and Firewall Clearance Try a pick and pull and get some from a 73 to 87.. You have to trim the frame on both sides about 1/2" .. You will probably have to redrill for new holes also. Try and set the engine back as far as you can... OH yeah.. Yes I mean perches and mounts. I would try the stock ones you have first though.. You might have trouble with the left side header but the right one will clear.. Go Figure.. At least these are the problems I had.. __________________ "A man and his truck, what a beautiful thing" 65 Short Fleetside BBC 65 Long Fleetside 283 3 on the tree for now. my build thread http://www.67-72chevytrucks.com/vboa...d.php?t=259536 Last edited by Chevy Fleetside; 12-13-2007 at 05:23 PM.

12-13-2007, 08:11 PM	#8
NF65Fleetside Registered User Join Date: Feb 2007 Location: Los Angeles Posts: 674	Re: Big Block and Firewall Clearance ok, thats kinda what I figured...geeesh this sounds like it will be waaaaay more than a days swap. guh! soooo getting jitters about doing it now. Ill definetly post a step by step of my swap for the way I do it. Stoked on the info you guys are posting but just hearing way too many different options/ways of going about doing it.

12-14-2007, 12:52 AM	#9
Slmd92DIME Registered User Join Date: Mar 2007 Location: West Virginia Posts: 481	Re: Big Block and Firewall Clearance Not to hijack the thread but... what do I need to do with mine? I have a 4 inch Z and 1 inch lowered cab mounts. Do I need to move my smalll block up 3 inches? Thsi is what i have heard I have just been making sure.... THanks guys

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