Polishing the intake port walls leads to fuel separating from the air at idle and low air speeds, you might want to make them not so shiny now to help avoid that I would check the lift at on all the valves at the retainers with checking springs to see how close your rocker arms are as far as their actual ratio are I've seen .130 lift differences when checking rocker arms from 4 different motors when I was blueprinting a NHRA stocker motor
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Cab- Yes I was planning to check actual lift at all valves but good to know, that's quite a difference.
Being that it will be port injected I don't think the surface finish would be the cause of fuel separation in comparison to carbureted but the final finish on it was done with 36 grit sanding rolls so rougher than it looks.
I see your using a TREMEC transmission did you have to modify the torsion bar crossmember? I’m in the middle of putting in a Gforce G101a in my 69 charger and the shifter comes up straight through the crossmember. So I’m trying to figure out how to make a new crossmember so it joins back up.
Re: 426 Hemi rebuild...
[Re: Cape]
#2725068 12/18/1909:23 AM12/18/1909:23 AM
Well quick rundown is I bought a house that had a lot of garage space, this one was just an unfinished pole building, 36x47.
I replaced three of the trusses with curved trusses for lift clearance and built attic storage within the front two.
Had it spray foam insulated then covered the interior with steel panels called dura liner from Mendards. (same as outside skin but thinner). Easy to work with.
All led lighting. (except for string lights that I haven't taken down since my wedding)
Externally mounted heat and a/c unit. No windows so doesn't take much at all to keep at a nice temperature with the spray foam.
I did white epoxy/urethane which reflects light and makes things easy to find though I didn't do a clear topcoat which was a mistake as it shows scratches rather easily.
Polishing the intake port walls leads to fuel separating from the air at idle and low air speeds, you might want to make them not so shiny now to help avoid that I would check the lift at on all the valves at the retainers with checking springs to see how close your rocker arms are as far as their actual ratio are I've seen .130 lift differences when checking rocker arms from 4 different motors when I was blueprinting a NHRA stocker motor
Way back in the early 70's when Jack Roush was into Drag Racing that 4 door Maverick he put on a seminar and stated the same thing about over polishing the intake ports. Stated to match port the intake to heads , remove any big goobs and leave the rest of the head intake ruff. He was racing a Ford , but to me at that time made sense.
it's ok to butt heads, just don't do it with a butthead
My shop might have looked like that back in 1926 when it was built as a car dealership. It's only 10,000 square feet though, small by todays standards. Extra room? nope !!!!!!!.
it's ok to butt heads, just don't do it with a butthead
Nice Clean Looking Shop!. I Know This Is a Mopar Site but I love that Caddy! I have one of those Bailey electric magnetic brakes as well. They're pretty sweet
[img]http://i.imgur.com/boeexFms.jpg[/img] 31 Plymouth Coupe, 392 Hemi, T56 magnum RS23J71 RS27J77 RP23J71 RO23J71 WM21J8A I don't regret the things I've done. I only regret the things I didn't do. "Wise men talk because they have something to say; fools because they have to say something. ~ Plato"
Are you using Edelbrock EFI or just the manifold? I've not seen too many positive reviews of their EFI when coloring outside the box they usually play in and that roller seems a good bit down the road and around the corner from that box.
I'm using (well intend to use) their EFI. Part # 35670
I followed the pro flo 4 forum for a while and it seemed mostly positive feedback. Some guys running cams with 7-8in vacuum at idle with no reported issues.
System is rated at 825hp so you would think it could take some cam......but if not, I'll change the ecu it to something with full access to all parameters. (Dominator?)
Would still be able to use the entire setup minus the ECU and wiring harness and it's not a bad deal for those parts alone at the price I bought it for.
Progress still verrrry slow. I'm told the short block should be ready for assembly next week. Also finally have flow numbers so I will get to work on the camshaft. From SF600 flow bench.
Very nice, both the building and the hemi. I have racking over my tool boxes similar to you but some dummy (me) set that shelf too low and I bang my head on it when I look in the top of the box. Have to fix that before blood is shed.
In theory, there is no difference between theory and practice. In practice, there is.
I have racking over my tool boxes similar to you but some dummy (me) set that shelf too low and I bang my head on it when I look in the top of the box. Have to fix that before blood is shed.
and what fun would that be ? my tool boxes are positioned similarly, and it's ALWAYS fun "rubbing" the hair [what's left] off the top of my head.
I could not build oil pressure with the same Morels in my world block at full lift. Due to the lifter design with the side cutouts. It pushed oil out like a sprinkler at full lift prelubing with a drill., I could not see the cutouts but close enough to the top it caused issues.. You might check it if you haven't. It may have just been the machining on my block but a different lifter design fixed it. Just passing it on because yours looks like mine in the pictures. Nice build, appreciate you sharing it.. I am doing close to the same EFI on my 572 hemi using holley dominator ecu and smart coils. Galen
Before I ordered the cam I measured the reliefs in the oil galleries to decide base circle and lobe lift. With .428 lobe lift on the intake it's .100 away from uncovering the oil gallery on both the base circle and at peak lift. Lifters measure .9035-.9036. Lifter bores .9052.
I did prime it already and everything looks very nice. No problem getting oil up to the top and nothing appears to be a 'gusher'.
I am running pushrod oiling.
Cam Motion ground the cam. I asked for 268/268 @.050 on a 112 lsa. Bob ground it 262/262 @.050 as it's a low lash lobe (.010 hot) and he said that would be rather comparable to the 268 I wanted if it were a standard lash cam.
So it's 262/262 @.050 112lsa .428/.421. Measured .658/.612 at the valve. I installed it at 107 ICL. PSI 1575 springs (1.4" OD) with Xceldyne ti locks/retainers. Intake 245lbs at 1.83 on the seat, 613 open. Exhaust 256 at 1.81 on the seat, 598 open.
Galen I suspect you are running a bit more lobe lift than me. It would help if the lifter bores didn't have a huge chamfer on the top. Yours sounds like a nice build! I'm going to try Ford Coyote coils.
Good deal I'm glad you didnt have the same issue, I could not tell from the pics if yours was cut as deep as mine on top or not. I really liked the looks of the morel lifters . It was the world block , wedge head on my old 65 belvedere. They did get carried away on the countersink cut at the top of the lifter bore on mine. Lobe lift on that engine was in the .450+ range if I remember correctly. I just got the KB block back from machining for the hemi. I went ahead and had lifter bushings put in it with a .028 oil hole.. I have the same tone wheel, cam sync etc. that you have. I got everything from Rich Nedbal including two accufab throttle bodies. my intake is the stage V. I am still in the mock up stage though and quite a ways behind you., wiring, plumbing etc. I have a couple of cams I am going to try with the Efi I am putting in the 262/270@.050 Lift .710/.690 on 114lsa. Also have a 270/276@.050 .704/.690 on a 112lsa we may try down the road. My wife is in love with that Caddy by the way.
Galen, I bought my parts from Rich as well. My vote would be for your 2nd cam considering your engine size. And thank you, the Cadillac is pretty beat up but it's a good old car.
I'm ready when you are to tune that SOB! Great progress..I normally use the Crower Enduramax lifters that oil through the pushrod as well as high pressure to the roller. Never had one fail. Keep the pics coming.
I'm ready when you are to tune that SOB! Great progress..I normally use the Crower Enduramax lifters that oil through the pushrod as well as high pressure to the roller. Never had one fail. Keep the pics coming.
Thanks Rich! Too many projects so working at a glacial pace....
thank you for the info ! i'm not sure i can ever use it, but it's nice to know a relatively easy coil-on-plug setup can be installed on a hemi and look good as well.
I moved the engine to a rolling table, installed clutch and flywheel. Did a cranking compression test on one cylinder just out of curiosity.
Also didn't like the look of the vacuum pump relief valve so put it inside a breather.
Also Brian Smith designed some header flanges for me but was unable to find someone to machine them for less than $1400 Not really sure where to go with that so may just bail on my header building idea and order some TTi's.
Hasn't been much interest in maintaining the tech archives....And once it is archived, nobody can reply to it.
I would suggest, at whatever point it's comfortable to move, that it should be moved to the Member's project area instead. It's over here Supposedly pictures will be saved as long as the servers keep running, and the thread can be replied to continuously.
As an aside, I believe the OEM AUDI/VW coil packs are a direct fit and don't require trimming like the Coyote coils do. It would perhaps depend on whether you are using Indy or Stage V heads as I believe the Indy plug tubes are taller.
I will be going down the EFI path at a later time on my 572 and am collecting parts atm.
The breather cap / relief valve is positively inspired. The whole project is pretty awesome , but those little touches are what shoves a project to the front of the line for me. Very nice !
Re: 426 Hemi rebuild...
[Re: tubtar]
#2940028 07/05/2112:18 AM07/05/2112:18 AM
I originally made a bracket (that I didn't take photos of) to brace the top alternator mount to the water pump..... Then noticed after tensioning the vacuum pump it was easily flexing on it's studs if I pulled on the belt.
Hmmm, don't like that.
Toss alternator support bracket in the trash and start over to include vacuum pump. Very solid now.
Finally caved and ordered some TTi headers. Very impressed by the construction and fitment. Thick flat flanges, not just a ground down weld beat at each port.
I welded o2 bungs in them and had them coated locally. Color is called "titanium" and they say rated for 1800deg. Installed with my favorite sealant, Toyota FIPG and no gaskets. Also used Zircoflex ceramic heat shield around the starter.
Your efi wiring looks better than mine, it was hard to find a good routing, I have so many relays ,diodes ad ons under the hood, it looks like a wiring factory exploded LOL
1968 Charger COLD A/C Hilborn EFI 512ci 9.7 compression, Stealth heads, 4.10 gear A518 ODtrans 4100lb,10.93 full street car trim 2020 T/A 392 Stock 11.79 @ 114.5
Re: 426 Hemi rebuild...
[Re: CSK]
#2966250 09/22/2108:17 AM09/22/2108:17 AM
That still looks awesome! Mine was similar before a few miles of split wire loom. I took apart the entire Holley harness to add as much as I could within it then re-loomed.
that looks real neat and clean . CSK - that looks like my engine bay . except i dont have AC or EFI
Tex
New best ET 10.259@129.65 . New best MPH 130.94 Finally fitted a solid cam, stepped it up a bit more 3690lbs through the mufflers New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm Power by Tex's Automotive
So is that a TKO 5 speed you have on the bench? Just wondering if you might step up to the new TKX with improved innards. Looks great and I'm very impressed at your attention to the small details That dual disc clutch is really going to put a beating on that transmission.
Gus
64 Plymouth Savoy 493 Indy EZ's by Nick at Compu-Flow 5-Speed Richmond faceplate Liberty box Dana 60
Thank you! The trans is a TKO 600. In part some of the reasoning behind what I did (keeping displacement smaller and aiming for higher rpm) was to keep peak torque to a point that it wouldn't immediately destroy the trans.
If that plan fails I would move to a different trans altogether, I believe the TKX is still rated at 600ft/lbs.
The clutch should be the softest way of transmitting the power as it's a light pressure plate and organic discs. (IMO a heavy pressure plate and aggressive disk material could be more grabby and put more of a spike in tq to the driveline)
I have really enjoyed reading your progress. I got the same headers bare also. I had to cut and relocate the collector to clear the 4L80, The titanium coating looks good.. Yours is turning out really nice, very clean.
Thanks guys! ^ Looks awesome I have nothing against carbs, just thought EFI would work better with E85 (or at least easier having a composition sensor vs having to test the fuel).
For exhaust, I bought a "stainless" system from ebay a while back. It's not stainless and not entirely sure it was made for this car. Had to cut up every part of it to make it fit. Used some 3.5in bends from the headers, reduced to dual 3in near the crossover. Pypes "race pro" mufflers (which despite their name I find to be quiet), and stock style tips from Accurate exhaust.
All coated in the same finish as the headers.
Also made some brackets to mount the Spal fans to the radiator.
Thanks! Ended up making 595 to the tires, pulled to 7600 limiter.
when you say it pulled to 7600 limiter, that's what those need to see and hear in the Hemi vs 440 thread. The difference in the hemi upstairs is amazing. Also I could not help but notice the San Francisco dodge tag holder, If you turn over a Pioneer Dodge San Jose tag frame reasonable give me a shout. That is where my 66 coronet came from.