Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Topics - 67xr7cat

Pages: [1]
1
FE Technical Forum / 63 427 block sonic test
« on: August 09, 2021, 10:06:10 PM »
So I've been told the early 427 blocks had thicker cylinder walls.  Recently I had a chance to use my ebay special $100 sonic tester.  Have to say once found the right coupling fluid (used dielectric grease) and got used to how to use it I could get very good and repeatable reading.  I used the china wall as a check both before and after sonic testing the block. Was impressed it read the china wall within .001" of what I measured its thickness as being. 

So this is a an early 1963 427 block C3AE-6015-AB and is currently standard bore. Other than some core shift on cylinder 7 I was surprised at how overall thick this block was. I know a sample of one cannot draw any conclusion as to how the rest are, but I'd say this one at least did not disprove the theory that the early 427 blocks are thick. Anyway sonic sheet is attached. Steve

2
FE Technical Forum / Mahle 930264570 piston modification
« on: July 25, 2021, 10:03:12 PM »
So been looking at the Mahle 930264570 piston in the 4.27" bore size for the 4.25" stroke.  The dish says is 20cc which with my TFS heads that have a 70cc chamber would put me at 11:1 CR.  I am thinking that will be too much for pump premium.  To get down to 10:1 would require removing 11cc from the piston dish, Removing 8cc would put me at 10.3:1 CR which probably be ok.  Question is if the piston is thick enough to remove 8-10cc from the dish area.  This is a NA engine street/strip.

Since sure will be asked the cam is a solid flat tappet and I attached the cam card. Probably going to just keep the 3.78" stroke crank, but just thinking...

3
Private Classifieds / TKO/T5 spacer plate - SOLD
« on: May 03, 2021, 10:55:34 PM »
This plate goes between the transmission and bellhousing to space the standard lenght input shaft back so that it will work with an FE bell that has the car toploader spacing. The plate is 3/4" thick. There is some grinding that was done on the inside where the transmission bearing hub goes as it did not fit correctly. This was mocked up to a TKO600 and a lakewood bell for a 460 Ford. I never actually used it, just mock up and has sat on the shelf for 15 years. $110.00 shipped in the lower 48 states.  thank you, Steve

4
FE Technical Forum / 4.26" bore piston rings
« on: February 14, 2021, 09:32:01 PM »
So need to take the old 427 over to the machine shop, but I'd say is a good chance it won't clean up at 4.250". The ring selection at 4.255" and 4.26" is not nearly as good.  Of course can get a some moly rings in a 5/64", 5/64", 3/16" ring package, but would like something more modern since will need a custom piston anyway for that bore size.

I see three 1mm/1mm/2mm sets available

Mahle  RING SET 4265MS-112 which is a ductile iron moly top, cast 2nd.  for about $260
Total seal AP Plus CWC1124260 which is a coated steel top, ductile iron 2nd.  for about $285
Total Seal AP Plus Gas Ported Piston Rings CWC1124260GP which has a fancy gas ported coated steel top ring, ductile iron 2nd for about $380

So other than the cheap 5/64" tractor rings which would you guys pick?  I'm thinking the total seal AP worth the $25 over the Mahles.  The gas ported rings TS says makes more HP via better seal, but have not found any real data to back up that claim.


5
FE Technical Forum / FE vs. BBC rod journal
« on: September 26, 2020, 09:38:47 PM »
So seems the FE weak point is the rod journal, big on diameter and too narrow. The BBC is the solution to this load bearing issue, but at what point does it matter.

Seems like back in the day in 1963 Fords solution was a full grooved main bearing, a grooved main crank journal, a 100psi relief valve in the pump, and an 80psi pressure relief at back of the block to help make sure oil got to all the rods.  Seems these days all this is not considered the best way. BBC rod journals seems can work with 1/2 groove main bearings and can run .0022" rod clearance, instead of the .0025"+ guys say need with the FE journal. 

So what point does it matter, what RPM, what HP?

Reason I ask is I have one of those old '63 427's am about to build that old school way, but wondering at what point want to update this.  If I was going with a stroker would be moot as they all are BBC rod journal, but I'd like to keep this a stock stroke.  Thanks, Steve

6
FE Technical Forum / borgeson power steering in a Mustang/Cougar
« on: September 11, 2019, 10:43:43 PM »
Anyone using the Borgeson PS gearbox in 67-70 Mustang/Cougar with an FE and the Hooker 6114 headers? If so do they clear the box or what modifications did you have to do to make it fit. Thanks, Steve

7
Private Classifieds / 390 Crank, Rods, .040" L2291F pistons
« on: June 10, 2019, 07:48:57 PM »
I have a complete rotating assembly (No bearings) out of a rebuilt 390 with about 1,000 miles on it.  Guy decided to put a stroker in it. My plans have changes so is up for sale. See post 4 below for pics.

Crank is a 390 2U 30/30. I'd get it polished, but is decent
Rods look good. Have stock bolts
Pistons are .040" oversize Speed Pro L 2291F forged flat tops.

$300 plus shipping. I am near San Antonio, TX. Zip is 78073

8
Private Classifieds / XR282HR-10 hydraulic roller cam for sale
« on: June 10, 2019, 07:38:49 PM »
Comp Cams XR282HR-10 PN: 33-432-9. Bought from a forum member, cam is new. Was going to use it, but plan changed so is for sale.

Adv. Dur. 282 In./288 Exh., @ .050 230 Int. / 236 Exh.,  Lift .521 In./.532 Exh. - LSA 110 deg.

$275 plus shipping. Located near San Antonio TX. Zip is 78073

9
FE Technical Forum / Keith Black piston rod modification???
« on: June 01, 2019, 06:33:09 PM »
So was looking at the KB199 pistons. Says the piston pin is centered and to narrow the rod small end to 1", stock is 1.250".  Looking at other KB pistons they all say the pin is centered, but no note about narrowing the rod.

So anyone know why the rod has to be narrowed? If it is for clearance, then could you just take 1/8" off the one side of the rod?

You would think they would machine the piston for it in the first place!

10
FE Technical Forum / 1963 427 crank and bearings
« on: May 28, 2019, 02:13:04 AM »
So I got around to disassembling the '63 427 short block I found. This engine looks to have not ever been apart. The crankshaft is grooved on all 5 main journals and the bearings are standard and say FoMoCo on them. Thing is the bearings are fully grooved too. Is that how Ford built these back in 1963 or are they later bearings? Guess there was a lot of concern about getting oil to the rod bearings!

11
Private Classifieds / Wtb 427 pistons
« on: May 21, 2019, 08:15:53 PM »

Looking for a good set of 427 flat top pistons for a 4.25" bore.

12
FE Technical Forum / Tool steel lifters
« on: May 15, 2019, 07:54:45 PM »
I bought a 63' 427 block so will have to use a solid cam. I have a sft cam, is a cast iron core. I've heard you can run uncoated tool steel lifters to avoid the possibility of a lobe going flat and trashing the engine. Anyone have experience good or bad using tool steel lifters to avoid cam failure?

13
FE Technical Forum / 427 side oiler block ?
« on: May 06, 2019, 06:26:28 AM »
I am looking at a 427 side oiler block. Has an oct. 1967 date code. Block is .050" at 4.28". Has been pressure tested and magged good. All machine work is done and has been 1/2 filled. Thing that concerns me is it has sleeves in cylinders 5 & 6. The sleeves are thin wall with a flange at the top (deck). Work was top notch. He wants $2,000 for the block. 

This will be for a street strip weekend car.  Think it would be ok? Thanks

14
FE Technical Forum / 390 block bored .080 over would hard block help?
« on: March 10, 2019, 06:17:01 PM »
Was looking at an early 70's 390 block that was bored to standard 428 size as the owner bought into the myth that it was same as a 428 service block because it has external ribs and passed the drill bit test.

So block had a lot of machine work done and cracked a cylinder.  Clearly I'd never start with a 390 block to make a 428, but can get it cheap and was wondering if a sleeve and a 1/2 fill of hard block would work for a basically street deal. Thanks, Steve

15
FE Technical Forum / BT 2 x 4 intake better than MR?
« on: January 09, 2019, 02:10:52 AM »
Are some new BT MR 2x4 intakes on ebay. The one seller claims that the BT intake has over time been improved over the original ford version and worth 50 to 70hp. Am assuming over the original, but maybe means over a 2bbl intake :P
Just was wondering if any truth to the newer intakes being better.

Pages: [1]