The 78 gets a heart transplant - A big one! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

BruthaMan · 05-09-2009, 08:14 PM

After four months of intensive therapy, Pancho's new heartbeat came alive on Friday with a thunderous startup!

Here's a short video clip (click the image) of the motor idling and a little romp at the end:

[IMG]http://i107.photobucket.com/albums/m291/good_...

vern350 · 05-09-2009, 08:53 PM

looks good and sounds better

Driveway Dreams · 05-09-2009, 09:37 PM

Looks and sounds real healthy!

88 Dippy · 05-09-2009, 09:48 PM

wow nice

wish Mutt's heart was as healthy

pokethesmot · 05-09-2009, 10:14 PM

i thought i peed my self but it ended up being a little bit of seamen lmao

Damien · 05-10-2009, 12:45 AM

Quote:

Originally Posted by pokethesmot

i thought i peed my self but it ended up being a little bit of seamen lmao

That's funny! The engine sounds healthy.

swb85 · 05-11-2009, 10:52 AM

No fair posting stuff like that without listing any specs!!!!!

BruthaMan · 05-11-2009, 11:37 AM

My bad, swb85, didn't even think about the specs!

Engine specs:

383 stroker
Comp cams gold rockers
heads (new) 76cc
Comp Cams 268 XE cam
Edelbrock RPM intake
Edelbrock 1406 Carb (600)
Lots of polished/chrome accessories

silvereagle07 · 05-11-2009, 03:17 PM

That engine sounds good! Nice work.

78BO · 05-11-2009, 04:55 PM

Sounds sweet! I can't wait!!!!!!

454HO · 05-11-2009, 05:06 PM

Sounds good! But don't run it too long without water.

OrangeAnimal · 05-12-2009, 09:50 PM

Did you already have the timing set? I am curious if it will keep that lope to it when it's said and done. My buddy is building a 383 with that exact cam and a set of Dart Iron eagle 64cc heads. Should be a real power house.

BruthaMan · 05-12-2009, 10:48 PM

The initial timing was set by the builder/machine shop. I'm sure we'll need to fine tune it, once we get it ready for a test drive. It's very responsive where it is right now. Immediate throttle response, so it probably won't vary too much.

slugish · 05-12-2009, 11:23 PM

sounds like a lot more duration than a 268 comp cam --what's the compression ratio > that has an effect on the sound as well .

OrangeAnimal · 05-13-2009, 12:09 AM

Thats what I am thinking to. It does sound like more cam that's why I had asked about the timing. I am sure you will find that you need to increase the timing to get it to act right under load. All and all though it does sound killer. I am sure it will shred some tires. Are you running a stall converter as well?

BruthaMan · 05-13-2009, 12:38 AM

I'm not sure what the compression is (actual number), however, the goal was as close to 9.5 to 1 as possible to keep on pump gas. When talking with my builder, early on, we talked about Vortec heads, but the challenge there was that they are 58cc heads. To get the compression down for pump gas, we really needed to be at a 76cc head, which is what we went with.

I went with the 268 cam after reading quite a few threads here by others using that particular cam. The impression I got was that it was about mid-way between mild and wild. Didn't want to go wild, and wanted a little more than mild.

Converter is stock, for now. Once we get it road ready, I'm taking it to the performance shop that rebuilt the 700r4 for it, and have them determine the best converter and double/triple check the transmission cable is properly set. Have heard some pretty bad stories about how finicky the 700r4s are on the cable being set just right. Not going to take a chance.

OrangeAnimal · 05-13-2009, 07:25 AM

On your tv cable you will need a bracket to correct the geometry. So it pulls the cable the right amount. I had issues when I swapped to a 200R4 in my El Camino. These people know all about it. They supplied me with everything to control the trans and the cable bracket as well as details on how to adjust it.

http://www.transmissioncenter.net/

swb85 · 05-13-2009, 08:43 AM

Once you get exhaust & mufflers on it'll calm down. Everything sounds rowdy with open headers. Motor looks/sounds great!!

05-09-2009, 08:53 PM	#2
vern350 like a rock Join Date: Nov 2004 Location: Ontario, Canada Posts: 517	Re: The 78 gets a heart transplant - A big one! looks good and sounds better

05-09-2009, 09:37 PM	#3
Driveway Dreams I have car A.D.D. Join Date: Feb 2009 Location: Greeley, Northern Colorado Posts: 4,147	Re: The 78 gets a heart transplant - A big one! Looks and sounds real healthy! __________________ -Gerald Building vehicles in memory of the first "car guy" I ever knew, my Grandpa. Bob Dunham 1935-2009. Rest in peace. 61 GMC Suburban SOLD The 86 build thread SOLD Are you a Colorado member?Click here.

05-09-2009, 09:48 PM	#4
88 Dippy Registered User Join Date: Feb 2009 Location: mt. Pleasant, MI Posts: 246	Re: The 78 gets a heart transplant - A big one! wow nice wish Mutt's heart was as healthy __________________ 1974 chevy Cheyenne C10 "The Mutt":4x4 convertion, NP208, 700-R4, stock 350, edelbrock Torker intake, edelbrock 600 CFM carb, duels 2001 Pontiac Grand Prix GT: 3.8L supercharged, 9.2:1 comprestion, ZZP XP cam, home made intake, 2 1/2" exhuast, 10psi of boost

05-09-2009, 10:14 PM	#5
pokethesmot profeshinaly unimployed Join Date: Dec 2008 Location: hazlehurst, GA Posts: 1,232	Re: The 78 gets a heart transplant - A big one! i thought i peed my self but it ended up being a little bit of seamen lmao __________________ my ride click here my myspace "having mud flaps is like asking for a smaller trophy"

05-11-2009, 10:52 AM	#7
swb85 On a budget like Fred Sanford Join Date: Oct 2005 Location: Topeka, KS Posts: 2,031	Re: The 78 gets a heart transplant - A big one! No fair posting stuff like that without listing any specs!!!!! __________________ '85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD

05-11-2009, 11:37 AM	#8
BruthaMan US Army Veteran Join Date: Nov 2008 Location: Central Texas Posts: 1,049	Re: The 78 gets a heart transplant - A big one! My bad, swb85, didn't even think about the specs! Engine specs: 383 stroker Comp cams gold rockers heads (new) 76cc Comp Cams 268 XE cam Edelbrock RPM intake Edelbrock 1406 Carb (600) Lots of polished/chrome accessories __________________ 1972 C10 Highlander - The making of a daily driver

05-11-2009, 03:17 PM	#9
silvereagle07 Registered User Join Date: Sep 2008 Location: Bailey, NC Posts: 2,462	Re: The 78 gets a heart transplant - A big one! That engine sounds good! Nice work. __________________ Jeramy '84 GMC project truck '85 Chevy 4X4 SOLD '07 Chevy Trailblazer SS 5th Annual SHPHC Car/Truck Show Pics http://67-72chevytrucks.com/vboard/s...d.php?t=543605 UPDATED PICS! CHECK 'EM OUT

05-11-2009, 04:55 PM	#10
78BO Registered User Join Date: May 2008 Location: Austin TX Posts: 531	Re: The 78 gets a heart transplant - A big one! Sounds sweet! I can't wait!!!!!!

05-11-2009, 05:06 PM	#11
454HO Registered User Join Date: Apr 2005 Location: Austin, TX Posts: 1,223	Re: The 78 gets a heart transplant - A big one! Sounds good! But don't run it too long without water. __________________ - Greg

05-12-2009, 09:50 PM	#12
OrangeAnimal Registered User Join Date: Jan 2009 Location: New Orleans, LA Posts: 702	Re: The 78 gets a heart transplant - A big one! Did you already have the timing set? I am curious if it will keep that lope to it when it's said and done. My buddy is building a 383 with that exact cam and a set of Dart Iron eagle 64cc heads. Should be a real power house. __________________ 82 Chevy SWB "OrangeAnimal" Lot of Goodies! Sold 93 GMC 1500 "Angry Red" 383 TBI Powered Fun! 300hp/410ft.lbs. 09 Yaris wife's daily.

05-12-2009, 10:48 PM	#13
BruthaMan US Army Veteran Join Date: Nov 2008 Location: Central Texas Posts: 1,049	Re: The 78 gets a heart transplant - A big one! The initial timing was set by the builder/machine shop. I'm sure we'll need to fine tune it, once we get it ready for a test drive. It's very responsive where it is right now. Immediate throttle response, so it probably won't vary too much. __________________ 1972 C10 Highlander - The making of a daily driver

05-12-2009, 11:23 PM	#14
slugish Slugish Join Date: Jan 2005 Location: Earlysville, Va. Posts: 1,024	Re: The 78 gets a heart transplant - A big one! sounds like a lot more duration than a 268 comp cam --what's the compression ratio > that has an effect on the sound as well .

05-13-2009, 12:09 AM	#15
OrangeAnimal Registered User Join Date: Jan 2009 Location: New Orleans, LA Posts: 702	Re: The 78 gets a heart transplant - A big one! Thats what I am thinking to. It does sound like more cam that's why I had asked about the timing. I am sure you will find that you need to increase the timing to get it to act right under load. All and all though it does sound killer. I am sure it will shred some tires. Are you running a stall converter as well? __________________ 82 Chevy SWB "OrangeAnimal" Lot of Goodies! Sold 93 GMC 1500 "Angry Red" 383 TBI Powered Fun! 300hp/410ft.lbs. 09 Yaris wife's daily.

05-13-2009, 12:38 AM	#16
BruthaMan US Army Veteran Join Date: Nov 2008 Location: Central Texas Posts: 1,049	Re: The 78 gets a heart transplant - A big one! I'm not sure what the compression is (actual number), however, the goal was as close to 9.5 to 1 as possible to keep on pump gas. When talking with my builder, early on, we talked about Vortec heads, but the challenge there was that they are 58cc heads. To get the compression down for pump gas, we really needed to be at a 76cc head, which is what we went with. I went with the 268 cam after reading quite a few threads here by others using that particular cam. The impression I got was that it was about mid-way between mild and wild. Didn't want to go wild, and wanted a little more than mild. Converter is stock, for now. Once we get it road ready, I'm taking it to the performance shop that rebuilt the 700r4 for it, and have them determine the best converter and double/triple check the transmission cable is properly set. Have heard some pretty bad stories about how finicky the 700r4s are on the cable being set just right. Not going to take a chance. __________________ 1972 C10 Highlander - The making of a daily driver Last edited by BruthaMan; 05-13-2009 at 12:42 AM.

05-13-2009, 07:25 AM	#17
OrangeAnimal Registered User Join Date: Jan 2009 Location: New Orleans, LA Posts: 702	Re: The 78 gets a heart transplant - A big one! On your tv cable you will need a bracket to correct the geometry. So it pulls the cable the right amount. I had issues when I swapped to a 200R4 in my El Camino. These people know all about it. They supplied me with everything to control the trans and the cable bracket as well as details on how to adjust it. http://www.transmissioncenter.net/ __________________ 82 Chevy SWB "OrangeAnimal" Lot of Goodies! Sold 93 GMC 1500 "Angry Red" 383 TBI Powered Fun! 300hp/410ft.lbs. 09 Yaris wife's daily.



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05-13-2009, 08:43 AM	#18
swb85 On a budget like Fred Sanford Join Date: Oct 2005 Location: Topeka, KS Posts: 2,031	Re: The 78 gets a heart transplant - A big one! Once you get exhaust & mufflers on it'll calm down. Everything sounds rowdy with open headers. Motor looks/sounds great!! __________________ '85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread '98 Camaro z28: 370ci twin turbo 370ci build '01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD

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