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08-08-2009, 01:11 AM | #1 |
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Join Date: Oct 2007
Location: Somis, California
Posts: 26
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DIY4x crossmember with BBC and Headers,4x4
Hello fellow first gen lovers.... i've been up for a few weeks now researching this topic only to become a little more confused than when i first started. i found a ton of good info but not exactly what i was looking for and it was scattered all over. here is what i have:
67 3/4 ton 4X4 with 454 (crappy jimmy rigged mounting) sm465/np205 and no name paper thin headers. this is whats wrong: my headers ALWAYS leak... i need new ones (they were poorly modified to fit truck, one collector is shortened very badly) My engine jumps around in the engine compartment like a mexican jumping bean due to previous owner BBC swap "custom" engine mounts Has anyone installed a DIY4X crossmember with a BBC and Headers(on a 4x4)??? What's the Part number for the headers? what brand?? i know of Thorley 304-y but Burt4x4 said they dont fit all that great and they are over $500!!! (not going to happen...) Any alternatives? i know a couple guys are doing this but they haven't updated their threads as far as i need :/ i feel like i know you guys ive read so much of your threads thanks for any info, i hope this will help others in my situation! Last edited by stevenk20; 08-08-2009 at 01:16 AM. |
08-08-2009, 09:44 AM | #2 | |
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Join Date: May 2006
Location: Philadelphia, Pa. 19454
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Re: DIY4x crossmember with BBC and Headers,4x4
Quote:
Welcome to the boards from Philly, looks like you've been around awhile, but only 2 posts...? Got pics?
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Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 08-08-2009 at 09:50 AM. |
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08-08-2009, 12:45 PM | #3 |
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Location: Somis, California
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Re: DIY4x crossmember with BBC and Headers,4x4
yeah here are some pics, none real recent but its look the same i just have new wheels and tires now... i usually got to ck5.com but this site is much better for what i need.[IMG]<a href="http://s88.photobucket.com/albums/k193/stevenk20/?action=view¤t=newpics032.jpg" target="_blank"><img src="http://i88.photobucket.com/albums/k193/stevenk20/newpics032.jpg" border="0" alt="Photobucket"></a>[/IMG]
i would really prefer headers. i going to swap in a 454HO crate motor with fuel injection eventually so i might as well get the exhaust done now. Last edited by stevenk20; 08-08-2009 at 12:46 PM. |
08-08-2009, 12:52 PM | #4 |
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Join Date: Oct 2007
Location: Somis, California
Posts: 26
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Re: DIY4x crossmember with BBC and Headers,4x4
yeah here are some pics, none real recent but its look the same i just have new wheels and tires now... i usually go to ck5.com but this site is much better for what i need.
i would really prefer headers. i going to swap in a 454HO crate motor with fuel injection eventually so i might as well get the exhaust done now. sorry i'm having troubles with the pics right now. usually its so easy but now its not... Last edited by stevenk20; 08-08-2009 at 12:57 PM. |
08-08-2009, 01:00 PM | #5 |
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Join Date: Mar 2006
Location: San Ramon, California
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Re: DIY4x crossmember with BBC and Headers,4x4
i have a diy4x cross member for sale with all parts except the c- channel that mounts inside the frame rails. pm if interested!
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My 1972 Blazer 5.3 E85/ NV4500 5spd 4x4 Work in Progress http://67-72chevytrucks.com/vboard/s...d.php?t=291482 ****SOLD!!!!!**** 1965 GMC 4X4 http://67-72chevytrucks.com/vboard/s...d.php?t=294727 |
08-08-2009, 01:14 PM | #6 |
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Location: Somis, California
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Re: DIY4x crossmember with BBC and Headers,4x4
ok heres what i have found for headers: 396-454
Dynomax 67-8(something) 2wd blazer/pickup/etc. P# 86022 $330 Flowtech 69-86 2wd blazer P# BIG-31530FLT $260 Thorley 73 4wd 402 blazer P# 304-Y $530 these are the only ones I have found besides the ones used on 2wd trucks here on the site... which ones fit the best? any other P#'s i can try? the dyno max fit real close to the shackle bolt on the 4x4 (thanks yukon jack) on the driver side |
08-08-2009, 01:20 PM | #7 |
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Re: DIY4x crossmember with BBC and Headers,4x4
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08-08-2009, 01:34 PM | #8 |
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Location: Philadelphia, Pa. 19454
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Re: DIY4x crossmember with BBC and Headers,4x4
You can send the first design back to Kert, he will modify for you
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Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim |
08-09-2009, 08:16 PM | #9 |
Grease Monkey
Join Date: Oct 2007
Location: Fresno CA
Posts: 750
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Re: DIY4x crossmember with BBC and Headers,4x4
I have 71 4x4 489 with a DIY4x cross member.I'm working that exact header clearance issue. I should have it figured out by the end of the week. I let you all know how I fixed it.
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Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12 |
08-21-2009, 02:59 PM | #10 |
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Re: DIY4x crossmember with BBC and Headers,4x4
cool thanks ridin high. i am very interested in seeing pics if you got them. i found another set of headers that might work.... they are for a 72 4x4 with a 454.
hooker super comp HOK-2817HKR anyone try these ones? it seem like they should work. they have 1 7/8 primaries which are nice but still have the 5/16 flanges and i want at least 3/8 flanges. anyone know of any besides the thorleys tri-y's? |
08-23-2009, 04:30 PM | #11 |
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Location: Grand Junction , CO
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Re: DIY4x crossmember with BBC and Headers,4x4
I am going to try hooker super comps #2841. They have a 2" primary which i need. but they are for a 2wd, im going to try them on anyway. Unless somebody knows a 2" primary header for a 4wd 71?
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71 swb 4x4, 37" Iroks, t400/205 496 77 CJ-7, Narrowed Dana 60 Lockrite, 14 Bolt Spool, 4.56 gears, 39.5" boggers. 360 t-18/d20 |
08-25-2009, 11:52 PM | #12 |
Grease Monkey
Join Date: Oct 2007
Location: Fresno CA
Posts: 750
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Re: DIY4x crossmember with BBC and Headers,4x4
Ok, so we found out that the DIY4x crossmember is a mess for the BBC. I asked Kert to send me a new crossmember that hasn't been welded so I can take measurements and weld it up according my needs. Next week my buddy should have shop room and time for us to mock and weld.
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Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12 |
08-26-2009, 09:30 PM | #13 |
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Location: Lake Stevens, WA
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Re: DIY4x crossmember with BBC and Headers,4x4
Does the DIY4X crossmember work fine for bigblocks without headers?
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71 K5 In progress! |
08-27-2009, 08:45 AM | #14 |
Grease Monkey
Join Date: Oct 2007
Location: Fresno CA
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Re: DIY4x crossmember with BBC and Headers,4x4
Yes, my motor bolted up just fine. Depending on your oil pan the connecting pipe may cause your oil pan not to clear. That was the only other issue I had, but I have deep moroso pan.
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Tow Rig: 2012 Chevy 2500HD CCSB LTZ Z71 4x4 Duramax Ultimate Offroad Build: 1978 Chevy Silverado K30 Crewcab Build Link http://67-72chevytrucks.com/vboard/s...d.php?t=654053 Mud Truck: 1972 Chevy Cheyenne K30 4x4, 468/400/205, D60/D70HD, 18" Custom Lift, 17x39" IROKs FOR SALE http://67-72chevytrucks.com/vboard/c...ton-4x4&cat=12 |
08-27-2009, 02:01 PM | #15 |
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Re: DIY4x crossmember with BBC and Headers,4x4
Thanks Ridin' High! now that u got 15 inches... time for some bigger meat!
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