Speed Engineering LS Swap Headers Findings - Page 7 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jjzepplin · 06-08-2020, 03:44 PM

My 99 Fbody manifolds would not fit my 72 Blazer. I got the 1 3/4" long tubes and the passenger side needed the frame massaged a bit to fit right. I just bent the frame up a bit. I am mating the T56 to it and other than that the headers seem to be a pretty good fit. I am however planning on using the original F body Master cylinder which if I am correct would be in a totally out of the way spot. I am still mocking everything up at this point.

**Captainfab** · 06-08-2020, 10:06 PM

If header to clutch slave cylinder clearence is an issue, you can always change to a hydraulic release bearing.

Willie Makeit · 06-09-2020, 10:55 AM

got a brand new set in the box that i won't be using due to the fact that you have to cut the "ears" off a 4L80e to run them.

**clay68c10** · 06-10-2020, 06:59 PM

I’m going to use an internal slave. Check out gringoloco’s build. He’s running a TKO with an internal slave.

STOCKISH · 06-10-2020, 08:40 PM

Quote:

Originally Posted by Willie Makeit

got a brand new set in the box that i won't be using due to the fact that you have to cut the "ears" off a 4L80e to run them.

price to 27612?

Willie Makeit · 06-12-2020, 10:59 AM

Quote:

Originally Posted by STOCKISH

price to 27612?

sold locally

shortbed70 · 12-25-2020, 07:51 PM

I know this is an old post but I’m wondering how they have held up or if there is a better brand that won’t break the bank for an 65 c10 with a 700r4 2 wd that doesn’t hang way down below the frame...

Acregger · 12-26-2020, 09:34 AM

Sorry cant help with how long they will hold up but I have to say they are pretty well built and do fit very nice for the price. So far I am happy with them

LS short box · 12-26-2020, 06:08 PM

I've had them on my 68 C10 LS swap for 3 years with zero issues. As much as I hate China made stuff I just couldn't see spending $800-$1200 for US made. My LS is a small cam LS1 so not huge horse power. If I was running a big HP engine I would not buy the Speed Engineering headers. The best designed headers have the longest gradual turn down after the exhaust port. If you look at the SE header design they take a tight bend after the exhaust port.

lts70 · 07-08-2021, 01:00 AM

Has anyone used their mid length? Trying to decide between mid length and long tube. See lots of information on the Shorty and Long but doesn’t seem to be much info on the mid length.

06-08-2020, 03:44 PM	#151
jjzepplin Registered User Join Date: Feb 2012 Location: Ruskin Florida Posts: 4,566	Re: Speed Engineering LS Swap Headers Findings My 99 Fbody manifolds would not fit my 72 Blazer. I got the 1 3/4" long tubes and the passenger side needed the frame massaged a bit to fit right. I just bent the frame up a bit. I am mating the T56 to it and other than that the headers seem to be a pretty good fit. I am however planning on using the original F body Master cylinder which if I am correct would be in a totally out of the way spot. I am still mocking everything up at this point. __________________ 70 swb 4x4 406sbc 700r4 203/205 d60/14blt locker yadda yadda http://67-72chevytrucks.com/vboard/s...88#post6935688 Yeller 72 Blazer 2wd conversion project "No Daggum Money" http://67-72chevytrucks.com/vboard/s...d.php?t=550804 LS1-T56 3.73 LSD super budget build Blanco-2014 Sierra SWB https://67-72chevytrucks.com/vboard/...d.php?t=810350 Last edited by jjzepplin; 06-09-2020 at 01:16 PM.

06-08-2020, 10:06 PM	#152
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: Speed Engineering LS Swap Headers Findings If header to clutch slave cylinder clearence is an issue, you can always change to a hydraulic release bearing. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

06-09-2020, 10:55 AM	#153
Willie Makeit Registered User Join Date: Oct 2013 Location: Alabama Posts: 1,234	Re: Speed Engineering LS Swap Headers Findings got a brand new set in the box that i won't be using due to the fact that you have to cut the "ears" off a 4L80e to run them.

06-10-2020, 06:59 PM	#154
clay68c10 Senior Member Join Date: Aug 2004 Location: Centennial, CO Posts: 2,991	Re: Speed Engineering LS Swap Headers Findings I’m going to use an internal slave. Check out gringoloco’s build. He’s running a TKO with an internal slave. __________________ ClusterTruck: 68 C10 Bought in 89, wrecked in 03. Slow low $ rebuild started '17. 6.0 & TKO http://67-72chevytrucks.com/vboard/s...d.php?t=788602 93 K1500 Short Step, 350, NV4500, EBL flash ECU. Vortec heads & roller cam someday... 05 Jeep Wrangler Unlimited. 3” lift & 6-speed 02 E320 the insurance total “free car” 13 Tahoe LTZ

12-25-2020, 07:51 PM	#157
shortbed70 Registered User Join Date: Mar 2002 Location: Forney TX Posts: 4,512	Re: Speed Engineering LS Swap Headers Findings I know this is an old post but I’m wondering how they have held up or if there is a better brand that won’t break the bank for an 65 c10 with a 700r4 2 wd that doesn’t hang way down below the frame... __________________ Troy 1965 Chevy Bagged,361 sbc,voodoo cam,1.5 full roller rockers,patriot 185cc vortec heads 2.02-1.60,vortec weiand polished intake,demon carb my truckhttp://67-72chevytrucks.com/vboard/s...d.php?t=332884 Big Red Dog build http://67-72chevytrucks.com/vboard/s...d.php?t=572274

12-26-2020, 09:34 AM	#158
Acregger Registered User Join Date: Jul 2020 Location: Pennsylvania Posts: 54	Re: Speed Engineering LS Swap Headers Findings Sorry cant help with how long they will hold up but I have to say they are pretty well built and do fit very nice for the price. So far I am happy with them

12-26-2020, 06:08 PM	#159
LS short box Registered User Join Date: Jun 2015 Location: Carlos MN Posts: 2,132	Re: Speed Engineering LS Swap Headers Findings I've had them on my 68 C10 LS swap for 3 years with zero issues. As much as I hate China made stuff I just couldn't see spending $800-$1200 for US made. My LS is a small cam LS1 so not huge horse power. If I was running a big HP engine I would not buy the Speed Engineering headers. The best designed headers have the longest gradual turn down after the exhaust port. If you look at the SE header design they take a tight bend after the exhaust port.

07-08-2021, 01:00 AM	#160
lts70 1970 Daily Driver Join Date: Jun 2007 Location: Glenns Ferry IDAHO Posts: 1,038	Re: Speed Engineering LS Swap Headers Findings Has anyone used their mid length? Trying to decide between mid length and long tube. See lots of information on the Shorty and Long but doesn’t seem to be much info on the mid length. __________________ It's not truly yours if you didn't build it yourself or if you don't do your own maintenance.



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