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Old 09-29-2013, 11:03 PM   #1
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302 Rebuild question

I currently have a stock 84 GT Carb 302. Now my question is what is the biggest cam i can install on my stock motor with out harming my cylinder heads. I want to make a great lope sound on my stock 302. Any advice is appreciated. Thanks.
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Old 09-29-2013, 11:19 PM   #2
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Need more info on motor n mods...Just for the sound of lope??? If you go big your heads don't breathe enough for a big cam and performance will suffer...you better have some steep gears out back just to get rolling without burning clutch...try some gears and some roller rockers first...
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Old 09-30-2013, 12:21 AM   #3
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Any recommendations on rockers??? Or maybe just bore out my heads??? See, this is my first 302 and i wanna do it right...just need a little direction.
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Old 09-30-2013, 10:53 AM   #4
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I'm not sure what heads you have, but if they're stock, ditch them. GT40s or P heads are good bang for the buck. Need more info on build tho. And just for reference, the stock GT40s flow up to around 500' lift so a cam any bigger than that is pointless.
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Old 09-30-2013, 11:13 AM   #5
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Whats your budget??? +1 on gt40...
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Old 09-30-2013, 11:22 AM   #6
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I dont want to go over 4,000.00 for whole engine build. Main goal ist to beat up on newer camaros. I hate them.
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Old 09-30-2013, 11:46 AM   #7
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Newer than yours or new??? New can move nowadays...but 4k u can put together a fun car that can hurt a few...I'm assuming motor is healthy...gt40 heads,,,explorer intake,,,s trim,,,,upgrade fuel system,,,some suspension and tires,,,should be around your budget...
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Old 09-30-2013, 12:15 PM   #8
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The new ones. Engine runs but need total overhaul. Block needs blasted and polished. Carb and intake are screwed, and possibly new belt drive system.
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Old 09-30-2013, 12:39 PM   #9
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It might b cheaper to get a block...or a donor car...maybe an assembled motor with some goodies on it...
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Old 09-30-2013, 12:54 PM   #10
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I wad afraid of that...
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Old 09-30-2013, 01:26 PM   #11
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Buy a junkyard GT40 motor out of a 5.0 explorer that is a known runner. Swap in a Comp 2031, new springs, new pushrods, 89-up T5 trans, KC clutch, rebuild the rearend if it needs it, new intake/carb since you are carburated etc... etc...

I'd sell it and buy a 94/95 Cobra honestly when all is said and done you can get one in ok shape for $5-$6k which is less than you'll spend on this 84.
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Old 09-30-2013, 06:16 PM   #12
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I found a 1990 f 150 5.0 GT 40 heads with the motor has it been started in one year 4 $250 should I buy it or not
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Old 09-30-2013, 07:57 PM   #13
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Truck motors have different internals. You will replace more than heads which means spending more too. If you are sure you want to do a 302 right, wait till you find a 85-93 302, or start with a crate short block from somewhere, or a bare block. 85-93 have roller cams, forged internals, and are good for up to 500 hp. (Don't recommend building that high though on stock shortblock). Also, we need to know if this is a daily driver or weekend car. If its your daily you probably want to not fight it on your drives to and from work, store, etc. 4k is tight if you are doing a true rebuild with machine work and stuff. And if you go a little more cash and a little newer you can always find something better and stronger. Spend 5-6 on 95 cobra or 10 on a coyote or more on a custom job. If you are really wanting to do a 302, do a 302. It's a good platform with lots of possible combos, we just need more info to help you. I would say, get a 85-93 302 to start. We haven't even touched stroking one. With 4k you prolly want a short block with gt40's cam and mass air. That's pretty common. If you are trying to beat new (as in 2012 and newer) camaros, good luck, gt 40s aren't gonna cut it alone. Those cars are pushing 500hp, also remember an engine only performs as well as the entire build. You need gears and suspension, and engine combo that works well together. It's not as simple as building a car with more horsepower. Give some more info.
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Old 10-01-2013, 12:05 AM   #14
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Ok, all i know is the motor is a 84 302, has a lot of surface rust on the block(shop said they can blast it clean), the intake manifold is shot along w the original carb. The pistons and crank look decent to me. No metal flakes in oil pan or stock cyl. heads, oil is black of course, the tranny has 1,018 miles on a new clutch, and the driveshaft is out and M.I.A. Now, my plan or what i want out of this is a daily driver. I know that the huge build up is very crucial on the wallet. Im mainly looking for 300-400 hp that sounds mean as hell. I want people to know im coming before they see me. The Cobra is a bad *** car but im in love w the Fox bodies. If y'all need anymore info plz ask specifically. I will do my best in answering ur questions. Thank y'all so much for the help!!!
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Old 10-01-2013, 09:21 AM   #15
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Quote:
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Ok, all i know is the motor is a 84 302, has a lot of surface rust on the block(shop said they can blast it clean), the intake manifold is shot along w the original carb. The pistons and crank look decent to me. No metal flakes in oil pan or stock cyl. heads, oil is black of course, the tranny has 1,018 miles on a new clutch, and the driveshaft is out and M.I.A. Now, my plan or what i want out of this is a daily driver. I know that the huge build up is very crucial on the wallet. Im mainly looking for 300-400 hp that sounds mean as hell. I want people to know im coming before they see me. The Cobra is a bad *** car but im in love w the Fox bodies. If y'all need anymore info plz ask specifically. I will do my best in answering ur questions. Thank y'all so much for the help!!!
84 block isnt roller tho. Look for a newer. The 1990 truck motor sounds like a good buy. But it will definitely need a piston and cam swap. Trucks run lower compression pistons. GT-40 heads alone are $250.

---------- Post added at 09:21 AM ---------- Previous post was at 09:18 AM ----------

Better yet if u have to look for a motor buy a 351.... I got a camaro eater cam that will fit in it
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Old 10-01-2013, 08:31 PM   #16
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Ok new plan...I have a grand for a running stock 302 from a 87-93 Fox...anyone?
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Old 10-01-2013, 09:38 PM   #17
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Found a 351 W for 700.00. Runs. Good deal?????
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Old 10-01-2013, 10:36 PM   #18
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What year? If it's a roller block yes.
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Old 10-01-2013, 10:39 PM   #19
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I've found them for less. Also depending on his budget he has to buy swap headers, drop mounts, 351 brackets and a 351 intake. Not hard or really super expensive but if this is a holy crap omfg budget build he might be better off with a 302.
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Old 10-02-2013, 09:39 AM   #20
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Sounds like you have done this before
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Old 10-02-2013, 10:56 AM   #21
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I just got a roller 302 long block from a pull a part for $215. Turned out to be a healthy block. Still had cross hatchings on cylinder walls, no deep rust. I lucked out for sure. I'm doing a $1k budget 10.5 comp. motor that should make 290-300rwhp. Just saying this for reference in price. No reason to spend $4k
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Old 10-02-2013, 11:00 AM   #22
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The 351 will give you more room for more power as you modify over the years, and it gives you a solid bottom end. The 302 would be decent too, but 1000? That might be good if it has been rebuilt already or has some upgrades etc. ultimately it's up to you, but they both sound like decent deals. Where I am mustang parts and cars and motors are scarce so 700 for a 351 or 1g for running 302 are decent.
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Old 10-02-2013, 12:12 PM   #23
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I just got a roller 302 long block from a pull a part for $215. Turned out to be a healthy block. Still had cross hatchings on cylinder walls, no deep rust. I lucked out for sure. I'm doing a $1k budget 10.5 comp. motor that should make 290-300rwhp. Just saying this for reference in price. No reason to spend $4k
Unless you are just talking about a new shortblock and swapping all your other stuff onto it there is no way in hell.
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Old 10-02-2013, 12:43 PM   #24
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Forgot to mention I have a lot of parts already. Only thing I'm buying is gaskets, gt40ps, motor mounts, fluids, and the tfs stage 1 cam.
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Old 10-03-2013, 11:04 PM   #25
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Ok...new plan. Found a running 302 out of a 90 stang for $300.00. I figure ill store my old engine and stock up on parts to build my monster. The engine I'm buying is high mileage but it runs like a champ. I think I'm getting a good deal. Now does anyone have a clue as to where I can get a 5 lug conversion and a set of bullit wheels???? Thanks again guys. You all are awsome.
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Old 10-04-2013, 07:22 PM   #26
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5 lug comes off of 95 and newer stangs, not sure, but I think 94 had them too. Or you can purchase online from npd, or probably other restoration sites. (Am, 5.0 resto, etc).
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Old 10-04-2013, 07:28 PM   #27
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Nice find on the 90 302, with high mileage I would recommend checking all seals, doing basic tune up, a good degreasing and just go through it slowly and thoroughly. $300 for running 90 302, wish I could find one. Just make sure it's not out of truck.
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Old 10-08-2013, 09:19 AM   #28
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Ok need some cheap bullit wheels. Anyone have anh ideas??? I've tried al of the salvage yards and came up empty.
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Old 10-08-2013, 10:02 AM   #29
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Ok need some cheap bullit wheels. Anyone have anh ideas??? I've tried al of the salvage yards and came up empty.
Your 84 is converted to 5 lug?
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Old 10-08-2013, 10:15 AM   #30
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Not yet...getting ranger axles for swap
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Old 10-08-2013, 01:31 PM   #31
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eBay, CL, I've seen lots on CL.
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