302 Engine Question???
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From: Iowa
302 Engine Question???
Greetings All:
I'm looking for a 302 engine that I want to use in a rod I'm building. Here is my question: Most of the 302's that I have found in my area are fuel injection. Can I use a fuel injected engine and change it to a carb motor by simply changing the intake manifold??
Also, are there many differences in 302's as far as what I should be looking for for my hot-rod??
THANKS in advance and I'm looking forward to your replies.
BuffDaddy
I'm looking for a 302 engine that I want to use in a rod I'm building. Here is my question: Most of the 302's that I have found in my area are fuel injection. Can I use a fuel injected engine and change it to a carb motor by simply changing the intake manifold??
Also, are there many differences in 302's as far as what I should be looking for for my hot-rod??
THANKS in advance and I'm looking forward to your replies.
BuffDaddy
Last edited by TigerDan; Aug 12, 2006 at 10:56 AM.
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From: Troy,NY
Ideally for a cheap build rod I'd look for a '87-89 mustang motor if you don't want to rebuild it. I think they stopped using the fly-cut forged pistons in 89 and switched to hyper pistons. Maybe some one here could confirm. If your going to rebuild the motor then any roller would be fine. For a carb conversion your going to need a distributor as well as the intake. Probably some plugs for the air injection ports in the back of the heads too. I went with Weiand Stealth for the intake.. Is there a reason your not considering a 351W? In a custom rod the price of parts to install it would only be a few bucks more for a lot more bang.
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The 85 HO has fly cut forged pistons and the roller cam. The 87-92 HO's have essentially the same long block as 85, with forged fly cut pistons, and the roller cam. The 93 and up HO's have hyperutectic pistons, but they are fly cut. If your not spraying or boosting the motor, the hypers are actually better, with closer clearances and lower weights. Only the 86 HO doesn't have fly cut pistons, but they were forged. The 86 has the swirl heads that restict horsepower potential, but they sound great.
As mentioned, you will need a different dizzy if you carb a formerly EFI HO. What you need is the 85 HO dizzy or the aftermarket eqivilant. With the roller cam you must make sure to have a steel drive gear. A change to the E303 or B303 roller cams might be something to look into. The stock longblock 5.0 HO will out perform a stock long block 351w.
As mentioned, you will need a different dizzy if you carb a formerly EFI HO. What you need is the 85 HO dizzy or the aftermarket eqivilant. With the roller cam you must make sure to have a steel drive gear. A change to the E303 or B303 roller cams might be something to look into. The stock longblock 5.0 HO will out perform a stock long block 351w.
Last edited by P51D Mustang; Aug 12, 2006 at 09:38 AM.
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From: Iowa
I would consider a 351 if I knew the dimensions were the same as a 302. This motor is going into a Pro-Street Econoline Pickup I'm building and room is tight. I have a narrowed 9" rear posi, built c-6 tranny I'm also using for the install. Engine will have a set-back for weight transfer.
Thanks for your input.
BuffDaddy
Thanks for your input.
BuffDaddy
Last edited by BuffDaddy; Aug 12, 2006 at 11:08 AM. Reason: left word out
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From: Troy,NY
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Elder User
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From: Troy,NY
Originally Posted by P51D Mustang
As mentioned, you will need a different dizzy if you carb a formerly EFI HO. What you need is the 85 HO dizzy or the aftermarket eqivilant. With the roller cam you must make sure to have a steel drive gear. A change to the E303 or B303 roller cams might be something to look into. The stock longblock 5.0 HO will out perform a stock long block 351w.
The stock longblock 5.0 does make more hp but less torque. As soon as you put a different cam, carb and iintake in the 351w that statement goes out the door.
Last edited by ken75ranger; Aug 12, 2006 at 06:50 PM.
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Junior User
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From: Iowa
If it's only 1 1/2 wider I'm sure I can handle that in my plans. Height no problem. With that in mind, are carb 351W's hard to come by?? What were they in?? Last question: I can assume then that there will be a very noticible difference over the 302??,,low end? high end?? or all through the power band?? Also, big weight difference between the 302 and 351W???
Thanks, look forward to your replies.
BuffDaddy
Thanks, look forward to your replies.
BuffDaddy
Last edited by BuffDaddy; Aug 12, 2006 at 11:38 PM. Reason: forgot something
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From: Troy,NY
They aren't very hard to find. Look for any pickup or van '96 or earlier. I'm pretty sure '94-96 were factory roller motors. They won't have a carb just like the 5.0's until you get back to around '87. Even with an older carb one you would be better off swapping in an aluminum intake and an aftermarket carb. A different cam is pretty much a must do to get performance out of them. Once you swap cams you will think your running an old school big block.The power band will be determined by the cam. Put the same cam in either a 5.0 or a 5.8 and there will be more power in the 5.8 from the 49 more cubic inches. They are pretty much the same block with a taller deck and larger main bearings. The 5.0 comes in around 400lbs. and the 5.8 about 100lbs. more. Both of those motors came in econolines and pickups so fitting it shouldn't be a problem.
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From: Troy,NY
Originally Posted by P51D Mustang
I guess that's just one more good reason to hate automatics! LOL
What could be more suitable to a small, lite weight, rod than a 5.0L HO?
What could be more suitable to a small, lite weight, rod than a 5.0L HO?
I've got nothing against the 5.0. I run an '87 lsc motor with a carb in my Bronco. It's what I could score cheap. If you have to buy one and convert it anyway he might as well get the most bang for his buck.
Postmaster
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From: St. Peter
can anyone answer this question for me. I want to build another 302 but need a roller block. I know where there's a 302 sitting in a 92 F150. Will it be a roller block? I dont need it to have the roller lifters or anything, just want it to be able to have roller lifters put in it without 500$ conversion lifters or small base circle cams. Thanks!
Hotshot
Joined: May 2003
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From: south louisiana
Originally Posted by Peter94
can anyone answer this question for me. I want to build another 302 but need a roller block. I know where there's a 302 sitting in a 92 F150. Will it be a roller block? I dont need it to have the roller lifters or anything, just want it to be able to have roller lifters put in it without 500$ conversion lifters or small base circle cams. Thanks!