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#1 |
Registered Member
Join Date: Nov 2000
Location: Maple Ridge B.C. Canada, The Best Place In The World
Posts: 871
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![]() just ordered all the stuff to fix my oil pump issue, and a few other goodies
please dont flame me for i ordered this stuff because i am on a budget. by the time the car is back up and running it will have the following edelbrock 60379's(wanted afr's but the 4-6 week wait and additional 500 bucks i cant justify it on my daily driver, so i got the heads and intake for the price of a set of afr's) box stock cobra intake (crane)e-303 1.7rr's 73mm c&l 70mm t-body u/d pulleys bbk 1-5/8 equal lengths 2.5 x pipe 2.5 magnaflow cat back 3.73's
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1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~ |
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#2 |
Registered Member
Join Date: Feb 2002
Location: Jacksonville, FL
Posts: 706
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![]() what's the total lift going to be? Man, I think that's going to be close with 1.7's on stock pistons...
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1988 GT Convertible 331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta... One week with new motor, two speeding tickets...joy |
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#3 |
Registered Member
Join Date: Nov 2000
Location: Maple Ridge B.C. Canada, The Best Place In The World
Posts: 871
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![]() .529 lift, it "should" work. ive been running that way with the e7's for a few months now no problems
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1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~ |
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#4 |
Domestic Rice really sucks!
Join Date: Apr 2002
Location: KY
Posts: 973
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![]() I have read that you can go .544 with stock pistons. Thing is, I don't remeber if that was with twisted wedge heads or not. Don't those heads have 1.90 intake valves in them? The e7's have 1.78 intake valves in them.
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#5 |
Registered Member
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
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![]() It should run in the 12's and have somewhere around 290RWHP.
By the way my cam has .566 lift with stock pistons and Canfield heads with 2.02 valves. Clearance has little to do with lift it has more to do with duration.
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
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#6 |
Registered Member
Join Date: Sep 1998
Location: Oviedo, FL
Posts: 992
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![]() Dark_5.0, I think you should reread what you typed about piston to valve clearance having more to do with duration than lift.
Lift is the amount, distance, the valve opens. Duration is the number of crankshaft degrees that the valve stays open. The valves and the pistons need to clear one another at all times, with the engine in time. If the engine goes out of time, now that's a different story. As in jumped chain/belt, broke chain/belt or poor installation.
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"Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic |
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#7 | |
Registered Member
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
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![]() Quote:
![]() When the intake valve is open the piston is on the down stroke. It is when the valve stays open too long (Duration) that you have problems. This is coming from Ed Curtis who is a cam building God in the mustang world.
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
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#8 |
Registered Member
Join Date: Sep 1998
Location: Oviedo, FL
Posts: 992
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![]() Not to get into a flame war here.
You are right that the intake valve is opened when the piston is on its downstroke [intake stroke] and there interferance isn't a problem. But, the intake valve, many times, on performance cams opens before top dead center [BTDC] and closes after bottom dead center [AFDC]. I pasted part of a cam spec card for a Crane Hyd Roller HR-216-325-2S-12. You can see that the Intake valve opens at 28.0 degrees BTDC and closes at 70.0 degrees ABDC. That is why I would be concerned about valve to piston clearance at TDC. And the Exhaust valve opens 76.0 before bottome dead center [BBDC] and closes at 30.0 degrees after top dead center [ATDC]. So the valves are open at TDC, where clearance becomes an issue. Lift: Intake @Cam 325 @Valve 520 All Lifts are based on zero lash and theoretical rocker arm ratios. Exhaust @ Cam 339 @Valve 542 Rocker Arm Ratio 1.60 Cam Timing: TAPPET @.004 Lift: Opens Closes ADV Duration Intake 28.0 BTDC 70.0 ABDC 278.0 ° Exhaust 76.0 BBDC 30.0 ATDC 286.0 ° Take care, Go STEELERS !!!!
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"Support our Troops" Dave 1968 Cougar 2004 Thunderbird 2007 F150 Harley-Davidson, SuperCrew 1986 LTD 1997 Ranger 1992 Honda Civic |
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#9 |
Registered Member
Join Date: Nov 2000
Location: Maple Ridge B.C. Canada, The Best Place In The World
Posts: 871
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![]() ok, im getting uber confused here. ive had no problems with p-v clearance with the stock heads. in running the crane 1.7rr's and crane e cam.
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1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~ |
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#10 |
Ride Hard
Join Date: Oct 2000
Location: Wyoming IL
Posts: 1,094
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![]() Bascially, from what Dark 5.O is running on his combination, it looks like you SHOULD be ok with valve clearance.
I also have the e7's, but run the TFS-1. Good luck and enjoy your new heads. Ryan
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65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored |
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#11 |
Registered Member
Join Date: Nov 2000
Location: Maple Ridge B.C. Canada, The Best Place In The World
Posts: 871
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![]() thanks for the help r white and everyone else!
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1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~ |
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#12 | |
Registered Member
Join Date: Apr 2001
Location: Staging lane
Posts: 4,337
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![]() Quote:
Go Referee's
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92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer |
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#13 |
Registered Member
Join Date: Oct 1999
Location: Pierre Part, La. U.S.A.
Posts: 1,850
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![]() Bow tie eater. Diff subject. Your profile says best 60ft 2.1, work on this first. You will be shocked at your 1/4 times when you start knocking down some 1.6 60fters. A good holeshot has whooped many-a-man.
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88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid ![]() |
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#14 |
Registered Member
Join Date: Nov 2000
Location: Maple Ridge B.C. Canada, The Best Place In The World
Posts: 871
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![]() workcar, the 2.1 was like 4 years ago with my first mustang, ive been working on the launch big time, but going to invest in some slicks or dr's
__________________
1984 Bronco II, 36" Michelin Military Tires, 95 EFI 5.0, NP435 Tranny, NP208 Doubler, NP205 Transfer Case, Fill Size Solid Dana 44 Front End, WH Progressive Rate Rock Crawling Coils, Bronco 8.8 Rear, Skyjacker Softride Leafs, 5.13 Gears, Detroit Locker. Final Crawl Ratio Of 175:1 88 GT Best 60ft. 2.181 Best ET 14.350 Best MPH 98.01 ~WRECKED!!!!~ |
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