[stroker461]

Just curious how many of ya guys are running these massive lift cams, my junk is pretty massive if ya ask me for what im trying to accomplish but my engine builder ( Swafford Competition) and jeff kauffman spec'd the cam so can only wait to see how it performs lol 461ci 368 cfm high ports 14:1 compression 1.65 HS rockers and 277/288@50 485/471 lobe with a 112 lobe sep..... hell I remember the day when ya had a .500 lift cam ya were the man, now seems theses days those .500 lift cams are put in daily drivers lol its just a huge difference between my last build and this one my last build had a .558/.579 lift cam in it and it was pretty wicked of course that was a iron headed 11.5:1 motor to, so really I have No clue on what to expect with the new build since I thought the old build was wicked LOL should have my junk together the end of this month we just keep changing stuff trying to make it stronger and/or changing stuff to try and gain more power from the start

[BruceWilkie]

The big dogs run 1+ inch lift these days.

[b-man]

Originally Posted by stroker461

Just curious how many of ya guys are running these massive lift cams, my junk is pretty massive if ya ask me for what im trying to accomplish but my engine builder ( Swafford Competition) and jeff kauffman spec'd the cam so can only wait to see how it performs lol 461ci 368 cfm high ports 14:1 compression 1.65 HS rockers and 277/288@50 485/471 lobe with a 112 lobe sep..... hell I remember the day when ya had a .500 lift cam ya were the man, now seems theses days those .500 lift cams are put in daily drivers lol its just a huge difference between my last build and this one my last build had a .558/.579 lift cam in it and it was pretty wicked of course that was a iron headed 11.5:1 motor to, so really I have No clue on what to expect with the new build since I thought the old build was wicked LOL should have my junk together the end of this month we just keep changing stuff trying to make it stronger and/or changing stuff to try and gain more power from the start

Depends on whose junk you're comparing yours to......

[stroker461]

Yea Bruce... Jeff said he had customers running that much lift thats crazy i never knew that people running that much but then again im only 30 so havent been racing as long as most of you guys lol

[stroker461]

B-man, I see that now guys running over 1" lift

[vin63]

Engine: 4.187 bore on a 3.750 stroke; Crower offset lifters std. dia.; GRP 6.800 connecting rods; JE coated pistons.

Cam: Lift - .800 I/.750 E; Duration @ .050 - 288/296; Lobe Separation -112

Cylinder Heads: KRE High Ports 64cc CC - 10.5:1 CR; 2.20 I (Ti)/1.70 E (Inconel); Smith Bros. 9.20 push rod; T&D 1.65 shaft rockers

[LiL Jack]

541 cubic inches
Billet Visners
Two fours
Three stages of nitrous
Around an inch lift

[BruceWilkie]

Late 80's I was told running .375" lobe Erson flat tappet +.600"(.597 net iirc) lift on the street was insane... said Id be setting lash constantly and changing springs often and wear the cam fast. 2000 miles lots of racing(track and street) end of year lash hadnt budged and springs hadnt lost anything significant, and cam was fine.

Following year nearly doubled my racing and cruise miles, lash still held. Springs were still good. Year 3 was similar but end of season the springs were down enough to change before I had problems, cam was still looking good. So much for insanity I guess.

(btw stamped steel 1.65 rockers bbc studs, grooved rocker balls, Erson posilocks and home fabbed steel bars with u-bolts for a stud girdle)

[stroker461]

Thing thats got me is that also of guys on here say that the HS 1.65 rockers measure out around 1.72 so if thats true that would put my junk with the 485/471 lobe at 834/810 lift

[BruceWilkie]

Originally Posted by stroker461

Thing thats got me is that also of guys on here say that the HS 1.65 rockers measure out around 1.72 so if thats true that would put my junk with the 485/471 lobe at 834/810 lift

Amazing how valvetrain technology has advanced. In 70's I dont think even pro stock hemi's ran that much lift. Maybe BBC's? Dont recall any Pontiac anywhere near that back then.

[stroker461]

I agree Bruce its insane, just hope it works lol cuz I've sunk a pretty good bit in this build

[Dragncar]

455, .689 lift. So........what kind of brace are you running ?
Ifs its the KRE brace I bought one and was not impressed. Does not make full contact like the Megga Brace. Held down by 5/16 bolts that are drilled and tapped on top of your cam bearings with not much thread depth.
The Megga Brace is sandwiched in place. No way it comes out. You could rip the KRE brace out with a pry bar.
I keep my KRE brace around with the hope of welding it in place in a 67 400 block and I would go splayed caps if the welding went how I wanted it too.
Good luck with your build.

[stroker461]

I had the KRE brace in it but took it out and sold to a PY member all of them take work to fit tight against the lifter bores, im putting the Deluxe Mega Bracket in with this build that way im still bracing all the lifter bores and not using freaking JB Weld that comes with it will be using a much stronger epoxy, as far as welding your KRE brace in, I would just buy some Grey Marine Tex that is some bad stuff we fixed cracked blocks with it, a small block stroker in 67 camaro was a 8 second car and block froze and cracked block we drilled very small holes at each end of crack to keep it from going further then with dremel V shaped the crack roughed up surrounding area cleaned with brake cleaner and put marine tex on it ran it for full season and then at Pinks in Bristol 2010 it slung 2 rods threw that same side of block busted block but didnt phase the area with marine tex, that made a few of my friends believers in the stuff I would fully epoxy that kre brace in with marine tex and it will never come out, as far as the thread depth on the kre brace as long as you have the same depth as the bolt is wide its good it makes it No stronger just cuz the bolt goes in further,

[AG]

I run a 461 with Edelbrock heads/Victor/dominator with a 262/266@0.050" and 0.390/0.399" lobe lift. Shift at 6300 rpm. Not interested in running any faster than 10.00.

[Dragncar]

I run the standard Mega Brace, have a Deluxe Mega Brace and the KRE Brace. Sure you have to fit all braces but the KRE brace is only what 3/8" thick. The aluminum ones give you much more contact area. One thing with the Mega Brace, they not only need fit with the aluminum half but the block needs fit to the steel bottom parts. There is casting flash under the lifter bores and if you do not make them flat you will not get good contact.
If I used Marine Tex that would not do much for the block splitting up the middle. Since I weld for a living I would like to try slowly nickel welding a brace in. It would solve the PMDs biggest block weakness. But I could ruin the block too. Since the block I have needs 1-2 sleeves and is already .060 over its a good candidate. The 67 blocks have thicker bores and I might be able to get away with .070-.080 over with a sonic check.
I have 2 full containers of Belzona if I wanted to go the epoxy route.
I understand the depth as deep as the thickness of the bolt rule. But as far as I am concerned it depends the bolt material and the female material. I would bet you could rip the threads out of cast iron with a 3/8ths ARP 2200 bolt with only 3/8th depth. Bet you can pull a cam bearing out of round, not much iron there. You can compress a lifter bore with a Mega Brace to where the lifter does not move, they flex.

[stroker461]

AG thats all I wanna run too, I might of went a little overboard lol I have no clue what my junk is gunna run, what's your compression and how much work is done to your heads just curious seems like a good running combo according to your E.T...... Dragncar I agree the mega brace is better, im letting Swafford Competition do everything to do with the engine, Keith Swafford does alot of X-275 engines and does alot of machine work for PLR he does amazing work, so im just letting him do the engine while im trying to rewire car with MSD Power Grid and redoing entire fuel system and suspension as well and between all that and work I just dont have the time to do it, they also do awesome chassis work up at Swafford Competition, roll cages ect, https://www.facebook.com/SwaffordCompetition

[60man]

.995 last I computed. I'm told I'd be wacked if indolged cam specs. ��

[AG]

Originally Posted by stroker461

AG thats all I wanna run too, I might of went a little overboard lol I have no clue what my junk is gunna run, what's your compression and how much work is done to your heads just curious seems like a good running combo according to your E.T......, https://www.facebook.com/SwaffordCompetition

The heads are Kauffman 325 CNC heads, static compression is 11.2 and the car race weight is 3450#. I have the jetting down and just need to play with timing and rear suspension adjustments. Just changed front springs and shocks and I'm hoping for some better 60' times. I think I can get to 10.1 ET. Your motor seems like it should forfill your expectations easily to a 10.00 ET, you might have to slow it down. I like that my motor is easy on parts and shifts at 6300. I could run on pump 93 but I use a 50/50 of 110/93 octane for safety. I'm hoping to buy an IA II block in a year or two and not worry about the stock block anymore.

[gtofreek]

A blower engine I built had 296°/288° @ .050", with just over .800" lift. Just opposite of Vin63.

[stroker461]

AG I was just messing with ya I wanna see how fast I can get my car with my little ole 461ci engine, right now Im putting the grid system in it and running wires for crank trigger, doing suspension and fuel system, suspension consist of QA1 upper and lower control arms with santhuff racing springs with calvert 90/10's and rear is Calvert split mono's with caltracs and calvert 9 way adjustable shocks, I hope it easily breaks in to the 9's N/A but we will have to wait and see if it does my car is pretty heavy its a 74' firebird with 72' front clip all steel except for hood and took back seat out and put lite weight wall in place its basically gunna be a small tire pro street/ drag car gunna run th400 with brake and PTC converter 4:10 gear and 275 drag radials and/or 28x10.5 slicks like I said im gunna push it to see what it will do, your car / engine combo is cool I like it......