1975 360
Elder User
Joined: Jun 2009
Posts: 511
Likes: 1
OK, I know I need the intake, I'm kinda cheap and the intakes are kinda spendy, I have been looking for a used one but they are few and far between' for the 360 motor, mostly chevy stuff available, I will save up some money if I can in these troubled times and buy a new one. Thanks for your reply
I must have missed the point somewhere.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
OK, I know I need the intake, I'm kinda cheap and the intakes are kinda spendy, I have been looking for a used one but they are few and far between' for the 360 motor, mostly chevy stuff available, I will save up some money if I can in these troubled times and buy a new one. Thanks for your reply
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Look back to first post, "I need more low end torque, if I lug it down too much it doesn't have enough power to pull a steep hill at low speeds like 5 miles per hour without putting it in granny gear. Thanks for any info"
It was asked already, how is swapping to a 4 barrel gonna increase low end torque? He says he has 4.10 gears and he can't pull a hill. He can't go much lower than that.
Something is bad off in his setup. While the 360 was considered a dog by comparison it is still a FE and a good truck motor. I haven't driven one in a while but recall they had plenty of power. I drove a company truck on occasion and it may have been the gearing in it that made the power.
John
It was asked already, how is swapping to a 4 barrel gonna increase low end torque? He says he has 4.10 gears and he can't pull a hill. He can't go much lower than that.
Something is bad off in his setup. While the 360 was considered a dog by comparison it is still a FE and a good truck motor. I haven't driven one in a while but recall they had plenty of power. I drove a company truck on occasion and it may have been the gearing in it that made the power.
John
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Look back to first post, "I need more low end torque, if I lug it down too much it doesn't have enough power to pull a steep hill at low speeds like 5 miles per hour without putting it in granny gear. Thanks for any info"
It was asked already, how is swapping to a 4 barrel gonna increase low end torque? He says he has 4.10 gears and he can't pull a hill. He can't go much lower than that.
Something is bad off in his setup. While the 360 was considered a dog by comparison it is still a FE and a good truck motor. I haven't driven one in a while but recall they had plenty of power. I drove a company truck on occasion and it may have been the gearing in it that made the power.
John
It was asked already, how is swapping to a 4 barrel gonna increase low end torque? He says he has 4.10 gears and he can't pull a hill. He can't go much lower than that.
Something is bad off in his setup. While the 360 was considered a dog by comparison it is still a FE and a good truck motor. I haven't driven one in a while but recall they had plenty of power. I drove a company truck on occasion and it may have been the gearing in it that made the power.
John
Tuned
Joined: Mar 2009
Posts: 360
Likes: 3
From: Napa
Actually, "any" 390 intake won't work right, you'd need one to match the later high, short, medium riser type ports in the 360 heads, something with a C6 casting number or later, or even a late 390 pickup manifold. Streetmasters, Street Dominators, Performers and Performer RPM's also have the modern high port. Early 390 intakes have the tall port, which was proven to have a lot of dead air at the bottom, and will give you a bad, turbulent mismatch with the taller port emptying into the shorter port in the head, and you'll still have a bowser 360- maybe worse, instead of better
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Actually, "any" 390 intake won't work right, you'd need one to match the later high, short, medium riser type ports in the 360 heads, something with a C6 casting number or later, or even a late 390 pickup manifold. Streetmasters, Street Dominators, Performers and Performer RPM's also have the modern high port. Early 390 intakes have the tall port, which was proven to have a lot of dead air at the bottom, and will give you a bad, turbulent mismatch with the taller port emptying into the shorter port in the head, and you'll still have a bowser 360- maybe worse, instead of better
John
Elder User
Joined: Jul 2003
Posts: 668
Likes: 2
I have 4:10 gears in it, I would like to know what you intend to do to your engine to make it awesome, especially getting 12 or 13 miles per gallon, I am getting about 8 mpg right now, of course that is fully loaded and pulling a trailer. I should check it empty on the highway. Thanks for your advice.
PS, I may have mistaken my mileage, this last tank was a little a little under 11mpg. I blame it on the cold weather and choke use
age.lol
Elder User
Joined: Jul 2003
Posts: 668
Likes: 2
I just re-read this, and a couple of other post's. You all are correct, a healthy engine should not have these issues. Ken, as you intimated, if one is on a budget, buy a gasket kit, clean the engine and replace the stock timing chain..best bang for the buck. Mayby one will find the poor performance issue in the process, like a mis aligned dizzy, etc.
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