Comp cams xe268h for 318
- Thread starter Dartfreak75
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Dartfreak75
Restore it, Dont part it!
Ok so let's go with that then I will keep the cam I have and install it and spend the money I would have on a different cam on the rear axle and look for deal on a stall TC. Maybe even mill the heads a little bit to add compression if I can scrape the money after the rear. So I have a few questions about the TC and the rearend. First the Tc this is going to sound stupid but I really don't get this so please yell at me lol. My stock tc has teeth it for the starter to engage. I was looking at some after market tcs and they dont have the teeth on them what am I missing there do you have to buy a plate or something to attach to it ? Second has anyone ever ran a 8.8 without narrowing it? And I asked it ^^^^ but I will ask again what is the average cost for milling a set of heads ?
Dartfreak75
Restore it, Dont part it!
I started with 1k that was gone 500$ dollars ago!
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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Absolutely yes,but I would not install that cam until I knew were the advertised was measured from, and if I didn't like the answer, I'd still throw it away. 278/288/112 with lifts of .421/.444,and .050s of 204/214 I wanna say;what a waste of a core/blank. Well 10 minutes on U-tube proves it; it idles like a 278/288 measured at .006
That will make the ICA around 68 to 70 degrees , which will kill any weakazz cylinder pressure you mighta had as a stocker.The Dcr works out to 6.1 with an 8.0Scr starting point. The 2800 is like putting a band-aid on a gushing wound.OK well maybe that's an exaggeration,lol. But I wouldn't even put that cam in my 367@ 11.3 Scr.
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Dartfreak75
Restore it, Dont part it!
Thanks for your help. That is the only cam that I have tho so it's either that cam and gears or new cam and stock gears no funds to do both! What do you suggest?
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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1) 2800TC
2) gears and SureGrip
3) 4bbl
4) compression
5) small fast-rate cam and kit
4/5 combo) at this time you might install that 6900. But if you optimize the compression for it, then you're married to the 69ish ICA.
I'd rather be married to a 59* ICA; which could be a
256/262/112,or a 262/268/110, or a 268/276/108,or even a 276/284/106 ; all of these can be installed at ICA of59*,and make good easy cylinder pressure. So many more options. Each one of those will move the power peak up about 200 rpm, with NO change in cylinder pressure.
The teener is too small to waste cylinder pressure.
2) gears and SureGrip
3) 4bbl
4) compression
5) small fast-rate cam and kit
4/5 combo) at this time you might install that 6900. But if you optimize the compression for it, then you're married to the 69ish ICA.
I'd rather be married to a 59* ICA; which could be a
256/262/112,or a 262/268/110, or a 268/276/108,or even a 276/284/106 ; all of these can be installed at ICA of59*,and make good easy cylinder pressure. So many more options. Each one of those will move the power peak up about 200 rpm, with NO change in cylinder pressure.
The teener is too small to waste cylinder pressure.
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Dartfreak75
Restore it, Dont part it!
With no cam at all? Just put the engine back in camless with a 400 $ torque converter and mash the gas!!!
just messing with you ole buddy!
Dartfreak75
Restore it, Dont part it!
How about something like this? Its not quite 2800
A904 high stall torque converter 2200-2500 27 SPLINE (NON-LOCKUP) 1 year warrant | eBay
A904 high stall torque converter 2200-2500 27 SPLINE (NON-LOCKUP) 1 year warrant | eBay
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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not for 2.76 gears; you need the 2800
I think in a previous post I used 280ftlbs at 2800 to get 2800x2.45x2.76=1623ftlbs into the rear tires, just enough to spin both rear tires like 255/60-15s
At 2500 she might make just 200ftlbs so 200x2.45x2.76=1352 not enough.
I think in a previous post I used 280ftlbs at 2800 to get 2800x2.45x2.76=1623ftlbs into the rear tires, just enough to spin both rear tires like 255/60-15s
At 2500 she might make just 200ftlbs so 200x2.45x2.76=1352 not enough.
Dartfreak75
Restore it, Dont part it!
So I have been reading a crap ton and I have found some very positive reviews on the sum 6900 cam. And I found some old post on here ppl even recommending it. They said that the slow ramps was not as bad as a killer as ppl make claim especially in a daily driver. So screw it I'm building this damn thing with what I have I guess if it's a turd it will be my turd and I'm gonna polish that orange bastard!!!
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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It's not a bad cam............. with a 2800TC, and at least 3.55s
But with an 1800TC the rpm is slow enough to keep the intake in reversion, bleeding cylinder pressure back into the intake, making it sound like a top-fueler, while making the engine gutless............. and the 2.76 gears keep it in the gutless zone until near 25/30 mph.
And when it finally starts building pressure, it is still just a 204/214/112 cam. Just about 1.5 sizes bigger than stock. You'd be better off with a good used factory 360 2bbl cam. IIRC those were 252/256/112, and can be installed at ICA of 56 to 59*, right on target; and that cam will make great fuel mileage.
But with an 1800TC the rpm is slow enough to keep the intake in reversion, bleeding cylinder pressure back into the intake, making it sound like a top-fueler, while making the engine gutless............. and the 2.76 gears keep it in the gutless zone until near 25/30 mph.
And when it finally starts building pressure, it is still just a 204/214/112 cam. Just about 1.5 sizes bigger than stock. You'd be better off with a good used factory 360 2bbl cam. IIRC those were 252/256/112, and can be installed at ICA of 56 to 59*, right on target; and that cam will make great fuel mileage.
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Dartfreak75
Restore it, Dont part it!
In the near future that mph will be lower with the 3.73 gears in the mean time I will keep her above 30mph lol thanks aj
AJ/FormS
68 Formua-S fastback clone 367/A833/GVod/3.55s
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OK
You better get a second job to buy gas then.
You better get a second job to buy gas then.
Dartfreak75
Restore it, Dont part it!
I will keep a look out for a 2800tc let me know if you see any good deals on here.
Johnny Dart
Well-Known Member
It would be nice to see some pics of your car, and what we are working with here. For $300.00 I'm thinking a nice tune up, and a nice detail. Engine,gears,stall,exhaust, it's all going to add up way more. Pics of your car, and what it has, would help me spend your $300
512Stroker
We are all here because we are not all there.
Sorry but I would trash all your "Hydraulic" choices.
If you want street performance use a solid flat tappet.
If you want track performance use a solid roller setup
Save your money and stay away from hydraulic lifters they are problematic and rob performance.
All you said is true but the op isn't building a race engine, just perking up a 318 on a budget. Hydraulics aren't that bad. Billions of engines have been built with them.
512Stroker
We are all here because we are not all there.
I understand, but, I will not agree with you.
Myself and many others have suffered to many hydraulic failures and spent too much $money chasing issues related to hydraulic lifters. Sorry, just the facts.
I stand by my prior statement.
Howdy,
I built my 318 and run the xe268 cam
However
- alloy heads (65cc)
- block was milled to zero deck
- use kb167 pistons
- ld4b manifold
- hei ignition
- Holley sniper
- Factory 3.23 gears
- stock 904 t/c opened up and modified to about a 2100rpm stall
- comp ratio is about 9.6:1
- use 273 valve train with Toyota Corolla 4K pushrods
Next step will be headers, have some block huggers to go on, not much else will fit due to the steering box (rhd car) and possibly programmable ignition timing to work with the sniper
Car drives really nice, seems most comfortable at about 830 idle rpm, has a nice lope to it
I built my 318 and run the xe268 cam
However
- alloy heads (65cc)
- block was milled to zero deck
- use kb167 pistons
- ld4b manifold
- hei ignition
- Holley sniper
- Factory 3.23 gears
- stock 904 t/c opened up and modified to about a 2100rpm stall
- comp ratio is about 9.6:1
- use 273 valve train with Toyota Corolla 4K pushrods
Next step will be headers, have some block huggers to go on, not much else will fit due to the steering box (rhd car) and possibly programmable ignition timing to work with the sniper
Car drives really nice, seems most comfortable at about 830 idle rpm, has a nice lope to it
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Inertia
Well-Known Member
Perhaps you were running a very popular inferior brand, and are forming an opinion of a good (million and millions in use today) street cam, based on a shitty manufacturer. jmo
Dartfreak75
Restore it, Dont part it!
Just curious what type of abuse and rpm do you see failures? From daily driving? Idle to 4500? Street cars? Yea i can see it with 8000+rpm and race engines Baja trucks pulling trucks etc but a lazy 318 cruiser I dont see hydra lifters being an issue.
Dartfreak75
Restore it, Dont part it!
Ask and you shall receive I have a thread in the members restoration section please check it out if you want. I started with 1000$ I started with the safety stuff new brakes new bushings ball joints steering gear basically everything suspension steering and brakes is new! Iv got new wheels and tires (not installed yet obviously) new leaf springs etc. Well that took more than I expected so ran into problems indidnt expect I had to replace my lcas and torsion bars. Anyways long story. I'm now about 1500 in.
Dartfreak75
Restore it, Dont part it!
That is awesome sounds and looks great! If I had the money to do machines work that is what I'd do!
Dartfreak75
Restore it, Dont part it!
Let me clear up the engine build. I screwed up from the beginning. I had a good running 318 from a truck that I bought for parts to fix up my 85 every day driver. So I pulled the engine and had planned on just freshen it up with new gaskets but then I figured I'd go ahead and get a new cam too since it was already gonna be disassembled. I had a 340 intake and headers and a Holley carb laying around from years ago so I figured I may as well use them too so I just ordered the cam without asking questions. Then a few months later I started a thread on here basically to just get ideas about what I should do with my build as far as timing chains timing carb settings etc. But everyone told me my combo was crap so I ditched it. Now several months later again iv saved up some more money and was gonna get a new cam I was just about set on the luniti voodoo but then I a good deal on the comp thus the creation of this thread. The xe268h was never in my consideration I just found it and it was a good deal I figured I should ask. But after this thread and reading alot of other threads I'm just gonna stick to the original plan build it. So here is what I have I have a 86 318 "302" heads home port job. Summit 6900 cam 278/288 duration 421/444 lift 112 lob separation matching lifters stock 1971 340 spread spreadbore intake and a holley 1850 carb and full length headers 2.5 dual exhaust. And I have a set of new thrush mufflers I may or may not use we will see how loud it is.
512Stroker
We are all here because we are not all there.
If you guy's are having a difficult time with this just research Hydraulic roller issues on this forum.
I dont dispute that there are millions of OEM hydraulic systems on the road that are great, the after market performance stuff is a different story. If you dont believe me ask Yellow Rose what he thinks of hydraulics.
I have been burned in the past, it wont happen again.
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