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Old 05-29-2012, 12:26 PM
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E street heads sbc

This is an update on my 1977 triumph tr7 with the 400sbc engine. I've had the engine out 3 times since my last post, trying different combinations. The 441 heads I used turned out to be cracked, so I put on a pair of 1968 4bbl 327 heads 194/ 160"s. Ran a Speed -pro cam csr185 230 duration 453 lift. I used a 3500 stall convertor...650 spreadbore carb. The car weighs 2650 with me in it ,full of gas. It rad 12.7@107mph. Very disapointing.
Changed the cam to an old style 280 comp hyd. cam 480 lift and put on the Edelbrock E-street heads and shorty headers. Car ran 11.7@ 113mph "some traction prblems". This was on the highway with a G-Tech timmer. The 400 runs alot cooler with the E-heads. Now has 10.7compression,easily runs on 107octane premium gas pump fuel. I would highly recomend these heads.Just bolt them on and GO!

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Old 05-29-2012, 02:35 PM
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more info

I forgot to mention that the new E street heads I put on are "64cc" chambers.I went from a 74cc chev iron head. As well, I am using LONG slot stamped steal rocker arms. I did Not need longer push rods, it messured up perfect. The EDELBROCK Site says that "some" engines do need 100thou longer rods, each motor is different. I used the Stock GM head bolts with Hardened 30thou thick washers.No interferance problems. Caution- when they say RE-torque after warm up..DO it! I pulled the torque wrench another 1/4 turn to bring them back up to 65lbs. Holding excellent now. I am running my total timing @38 with No issues. These E street heads are very User Friendly and work extreamly well.I was told not to buy them, and that they were a waste of money, and didnt work that great,.. but I have found this to be totaly False. 100% good on a 400. I would run these heads again..GOOD job Edelbrock!!
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Old 05-29-2012, 02:58 PM
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Old 05-29-2012, 03:14 PM
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Thanks F-Bird. I will adjust the timming.I feel you are right. And as for the Gtech and run I made,..it was pretty crappy. I spun way to much and had to peddle it. It was just to cold out that day. I will Take it to the Race track this weekend and give it an honest chance now that its nice and warm out.
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Old 05-29-2012, 03:21 PM
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mistake

Quote:
Originally Posted by F-BIRD'88
Good stuff good pics

Where are you getting "107 octane pump gas" ?

Much more power to be had with a performer rpm style manifold and
750 800carb.

The Comp XE 284H-10 cam makes a good bit more power in the 400 than the 280H magnum cam.

i think your car will end up much faster than 113 MPH when dialed in a bit more.
My brain isnt working today.."91 octane" sorry, what was I thinking?? Running My M/T tires at 14lbs. Mabey lower it to 12lbs. The intake and carb just kinda came my way, so I used them. And yes, I feel these heads really helped. I'm 1 second faster so far,..should see alot better ET at the track.
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Old 05-29-2012, 03:27 PM
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Quote:
Originally Posted by F-BIRD'88
What headers did you use ( origional application) ?
Cheap Flow Tec headers. Not sure what they actually fit...they are the only ones I could get to fit. I would of liked to use a REAL header, but I would of had to do some serious chopping on the car. The fire-wall is such a weird shape, its hard to make anything fit, LOL.
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Old 05-29-2012, 06:27 PM
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You have been most helpful..Thank you. I like the "lowered " air cleaner bottom Idea, as I DO have height issues. I could have put on a taller scoop, but I sit so low in the car that I can hardly see over the short one thats on LOL. As far as gas & octane,..I will look around and see If I can find something higher.I fixed the fuel line "rubber 6 iches" changed it out to Metal line...thanks for the heads-up. I have a drive shaft hoop on. I found some of my old info on the 400. It a 28thou deck. And it is STD bore flat tops 4 valve relief. Gasket is 39thou compressed. I use Manifold vacume for my DIST instead of taking from the carb.Vacume drops off as engine picks up. Using stock 400 rods with ARP bolts ,Clevite bearings through out. Gearing is 308, this engine likes to push. PROBLEM-with these new E heads, the engine will pull past 6800rpm! I took my foot out of it..I didnt want to blow it up.I'm not sure at what rpm it would stop. With the old heads, it would only pull to 5000rpm. What is the SAFE Zone for these rods??
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Old 05-29-2012, 07:48 PM
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Unfortunatly this is the only pic I took.
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Old 05-30-2012, 02:58 PM
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Quote:
Originally Posted by F-BIRD'88
Are those the E-210 head?
These are the E STREET #5089
185cc intake runner
60cc exhaust runner
64cc chamber
23 degree valve angle
2.02 INT
1.60 Ext.
deck thickness 9/16
3/8 guide plates
Flow Numbers @28" H20...Intake 248 ...Exh 163 AT-.500"
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Old 05-31-2012, 09:57 AM
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Long story short...If you all ready have headers, intake and a decent carb, and still have the Stock heads on.....By putting on the E-Streets, you with shave off close to 1 second off your E.T
If you already have Vortec heads, or stock Modified,..your gains will porbibly be 1/2 that... although, I have read on the corvette Forums a fellow shaving of 6 tenths over a set of tricked out Cammels. Mabey not the best "all out" racing head, but great for any 400HP Street engine.
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Old 06-19-2012, 12:25 AM
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to the race track

well not much changed. I went 11.79 @ 118mph My 1/8th mile was 97mph. My zero to 60mph was 3.1 seconds. Had my G tech timer with me, it was right on with their clock.
Acording to the Wallace race chart...I have 364 hp. Car weighed in at 2570 with spare tire, full tank of gas,and me in it. I thought the HP was kinda low?? I figured for sure I would of had more HP...I guess not.
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Old 06-19-2012, 09:54 AM
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With a better carb and ignition tuning you could probably pick up 30hp. Tuning can make a big diference.
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Old 06-19-2012, 03:42 PM
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Quote:
Originally Posted by oldhotroddertr7
well not much changed. I went 11.79 @ 118mph My 1/8th mile was 97mph. My zero to 60mph was 3.1 seconds. Had my G tech timer with me, it was right on with their clock.
Acording to the Wallace race chart...I have 364 hp. Car weighed in at 2570 with spare tire, full tank of gas,and me in it. I thought the HP was kinda low?? I figured for sure I would of had more HP...I guess not.
That's probably rear wheel HP. If so that puts you =/> 425 HP at the flywheel.
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Old 06-19-2012, 03:55 PM
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Quote:
Originally Posted by cobalt327
That's probably rear wheel HP. If so that puts you =/> 425 HP at the flywheel.
I re- calculated, and came up with this.....
309 rwhp,.. weight 2570lbs.. 11.79 @118 + 20% =370 engine hp ?? this is about as close as I can figure it.
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Old 06-19-2012, 04:02 PM
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370 is probably pretty close, again better carb and ignition would get you some but you have a mild cam and shorty headers. Headers can make a huge difference. With good long tubes and a new intake 400+hp would be a sure bet, with a good matched solid cam then you're looking at 425+hp. Port those heads and you'd probably pick up another 25hp.

What you have is probably plenty for that car, but you can always go further.
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