'63 Chevy step side

[63chevystepside]

I saw this on a site and wondered what you all thought? You think this firing order would work on a SBC? If i understand this right they changed the firing order and got 8-10Hp and it ran smoother an cooler. Check it out and let know what you'll think-Thanks. Fresh Firing OrdersA typical Chevy V-8 firing order is 1-8-4-3-6-5-7-2 (aside from late model LS-series engines). For the vast majority of applications, this firing order works very, very well. So well, there's likely no need to change it. But in a high performance (race or otherwise) application, there may be sufficient power available from different firing orders to warrant a change. For example, there are seven other firing order arrangements that can be used without changing the crankshaft layout. These firing orders include the following:*1-8-4-2-6-5-7-3*1-8-7-2-6-5-4-3*1-8-7-3-6-5-4-2*1-5-4-3-6-8-7-2*1-5-7-3-6-8-4-2*1-5-7-2-6-8-4-3*1-5-4-2-6-8-7-3Reher-Morrison has tested the various combinations, and has found some interesting results. When the firing order is revised to 1-8-7-3-6-5-4-2, you'll find some power and reliability. Now, if you race a Pro Stock car, this is no secret since the revised order has been in vogue for some time, but for little guys it's also important. You see, with the revised firing order, fuel distribution dilemmas are resolved.The engine tends to run cooler, and perhaps just as important, the engine is actually smoother. How much extra power is there? Anywhere between 8-10 measurable horsepower. In a well-sorted engine, that's a bunch. There was once a caveat here though: The average racer couldn't easily get a cam with the revised lobe positions. Not so today. Reher-Morrison sells such a package ("Big Stick Cams&quot for Chevy big-block/Big Chief head combinations.
---i guess you have to have the cam designed for this?

 

[66nova]

Yeah this is becoming more and more common. The 4/7 swap is something most cam manufacturers offer today. I ran a 4/7 swap cam in the 408 that I just took out of my Nova. The 421 I have now has a standard pattern cam and when I change cams (go bigger) it will probably still be a standard pattern cam. It's not a bad change by any means but there have been a lot of engine builders and cam companies doing research into these swaps and found very mixed results.
From what I have found is the benefit is more with bigger cubic inch high horse power motors.

So I don't think it's a bad idea as long as you're ok with the exta upfront expense and don't forget to swap your plug wires on 4 and 7. These cams will cost an additional $30+ dollars.

 

[63chevystepside]

Yeah this is becoming more and more common. The 4/7 swap is something most cam manufacturers offer today. I ran a 4/7 swap cam in the 408 that I just took out of my Nova. The 421 I have now has a standard pattern cam and when I change cams (go bigger) it will probably still be a standard pattern cam. It's not a bad change by any means but there have been a lot of engine builders and cam companies doing research into these swaps and found very mixed results.
From what I have found is the benefit is more with bigger cubic inch high horse power motors.

So I don't think it's a bad idea as long as you're ok with the exta upfront expense and don't forget to swap your plug wires on 4 and 7. These cams will cost an additional $30+ dollars.

Ok cool---i have a odd ball question-my set up is with the 350 bored 40 over with flat top pistions with 4 relief valves 4 bolt main converter over to a 327(327 crank turned 10 an pitsons) i put in a cam i had in a 350-this 327 has 305 heads and i put the timing chain on 4 retard-i used stock 350 push rods and it has 1.5 long slot rockers-the cam is 454 lift 272 duration 110 lobe and 1800-5500. My question is with it being a 327 and with 305 heads does this change the lift on the cam to something higher?
My pitsons are 8.7 and the 305 heads are suppose to raise the compression up to 1.2 more.
Also can you put longer push rods to get more lift instead of getting the bigger rockers?

 

[66nova]

Yeah this is becoming more and more common. The 4/7 swap is something most cam manufacturers offer today. I ran a 4/7 swap cam in the 408 that I just took out of my Nova. The 421 I have now has a standard pattern cam and when I change cams (go bigger) it will probably still be a standard pattern cam. It's not a bad change by any means but there have been a lot of engine builders and cam companies doing research into these swaps and found very mixed results.
From what I have found is the benefit is more with bigger cubic inch high horse power motors.

So I don't think it's a bad idea as long as you're ok with the exta upfront expense and don't forget to swap your plug wires on 4 and 7. These cams will cost an additional $30+ dollars.

Ok cool---i have a odd ball question-my set up is with the 350 bored 40 over with flat top pistions with 4 relief valves 4 bolt main converter over to a 327(327 crank turned 10 an pitsons) i put in a cam i had in a 350-this 327 has 305 heads and i put the timing chain on 4 retard-i used stock 350 push rods and it has 1.5 long slot rockers-the cam is 454 lift 272 duration 110 lobe and 1800-5500. My question is with it being a 327 and with 305 heads does this change the lift on the cam to something higher?
My pitsons are 8.7 and the 305 heads are suppose to raise the compression up to 1.2 more.
Also can you put longer push rods to get more lift instead of getting the bigger rockers?

My question is with it being a 327 and with 305 heads does this change the lift on the cam to something higher?

Also can you put longer push rods to get more lift instead of getting the bigger rockers

No and No. The only thing you can do to get more lift/duration is change cams or change rockers.

 

[63chevystepside]

Yeah this is becoming more and more common. The 4/7 swap is something most cam manufacturers offer today. I ran a 4/7 swap cam in the 408 that I just took out of my Nova. The 421 I have now has a standard pattern cam and when I change cams (go bigger) it will probably still be a standard pattern cam. It's not a bad change by any means but there have been a lot of engine builders and cam companies doing research into these swaps and found very mixed results.
From what I have found is the benefit is more with bigger cubic inch high horse power motors.

So I don't think it's a bad idea as long as you're ok with the exta upfront expense and don't forget to swap your plug wires on 4 and 7. These cams will cost an additional $30+ dollars.

Ok cool---i have a odd ball question-my set up is with the 350 bored 40 over with flat top pistions with 4 relief valves 4 bolt main converter over to a 327(327 crank turned 10 an pitsons) i put in a cam i had in a 350-this 327 has 305 heads and i put the timing chain on 4 retard-i used stock 350 push rods and it has 1.5 long slot rockers-the cam is 454 lift 272 duration 110 lobe and 1800-5500. My question is with it being a 327 and with 305 heads does this change the lift on the cam to something higher?
My pitsons are 8.7 and the 305 heads are suppose to raise the compression up to 1.2 more.
Also can you put longer push rods to get more lift instead of getting the bigger rockers?

My question is with it being a 327 and with 305 heads does this change the lift on the cam to something higher?

Also can you put longer push rods to get more lift instead of getting the bigger rockers

No and No. The only thing you can do to get more lift/duration is change cams or change rockers.

Ok thanks

 

[hotrodpc]

The 63 is running!!! I still got to get the holly blue electric fuel pump(just got one on i had 30gph) got to get the shifter and got to get the drive shaft done-got to get the exhaust done-then it be back on the road. Iv been tinkering with the 327 doing the little things this 327 will be a quick project i got everything but a few odds and ends and just need the holly blue electric fuel pump on this one two but thought about just putting in the stock manual fuel pump and later getting the other pump to get it in and going. I will take some pics this after noon and give ya'll a look see.

You mean the motor starts??? Sounds like you got a bit of work to do before its actually RUNNING. So you are running the 327 in it then??? This is obviously a large journal 327 engine??? Why not find a 350 crank and put in this thing. You'll notice a significant horesepower/torque increase. More cubes, and higher compression. Both the 327 and the 350 run the 5.7 in con rods, same compression height at the wrist pins in the pistons, so it should be as a simple as a crank swap. Be sure to replace the rod and main bearings too if you do this since you'll running the same rods on a differant journal.

 

[63chevystepside]

The 63 is running!!! I still got to get the holly blue electric fuel pump(just got one on i had 30gph) got to get the shifter and got to get the drive shaft done-got to get the exhaust done-then it be back on the road. Iv been tinkering with the 327 doing the little things this 327 will be a quick project i got everything but a few odds and ends and just need the holly blue electric fuel pump on this one two but thought about just putting in the stock manual fuel pump and later getting the other pump to get it in and going. I will take some pics this after noon and give ya'll a look see.

You mean the motor starts??? Sounds like you got a bit of work to do before its actually RUNNING. So you are running the 327 in it then??? This is obviously a large journal 327 engine??? Why not find a 350 crank and put in this thing. You'll notice a significant horesepower/torque increase. More cubes, and higher compression. Both the 327 and the 350 run the 5.7 in con rods, same compression height at the wrist pins in the pistons, so it should be as a simple as a crank swap. Be sure to replace the rod and main bearings too if you do this since you'll running the same rods on a differant journal.

Ahaa-no this one isnt running yet-it (327)ran fine before when i bought it they had over carb it with a 750...it "was"in the 63 and iv done a few things to it before putting it in something. The 350 is in the 63 with the tranny you did for me-it starts and runs-just waiting on funds to get the shifter and drive shaft then it be bout ready for the road-sorry i havent got the pics on here yet-i see if i can 2nite-my wife does it for me(im comp.illet). The 350 in the 63 i done a few things to it two(just little stuff). It also needs a bigger electric fuel pump it just has a 30gph 5.5-9 psi on it and no pressure reg. Im sorry i should of made a diffrent thread for the 327-but the cam i got in it and the way its been set up will be better than the 327/350hp back in the day.
The 327 has 8.7 to 1 pistons and it will have the 305 heads but i put the double roll chain on 4 retard to help breathing in the upper rpm-its not "a bad" boy engine just wanted it to run good...

 

[63chevystepside]

The 327 is a 4 bolt 350 bored 40 over 8.7 to 1 pistons with a turned 327 crank-cam on it is 454lift-272duration-110lobe-rpm 1800-5500. Has double roll chain on 4 retard, performer intake good up to 6500rpm,305 heads, 1.5 long slot rockers,headers, hei with a curve kit,electric fan,electric fuel pump,under driven pullys, super coil, 180 hi flo thermostate, cold ram air kit...Iv painted it blk with grade 8 gold bolts with gold vavle covers, 8 inch balancer...it will be quick. But not as bad as the 350 i got in front of the 400 tranny you did for me thats in the 63.

 

[66nova]

The 63 is running!!! I still got to get the holly blue electric fuel pump(just got one on i had 30gph) got to get the shifter and got to get the drive shaft done-got to get the exhaust done-then it be back on the road. Iv been tinkering with the 327 doing the little things this 327 will be a quick project i got everything but a few odds and ends and just need the holly blue electric fuel pump on this one two but thought about just putting in the stock manual fuel pump and later getting the other pump to get it in and going. I will take some pics this after noon and give ya'll a look see.

You mean the motor starts??? Sounds like you got a bit of work to do before its actually RUNNING. So you are running the 327 in it then??? This is obviously a large journal 327 engine??? Why not find a 350 crank and put in this thing. You'll notice a significant horesepower/torque increase. More cubes, and higher compression. Both the 327 and the 350 run the 5.7 in con rods, same compression height at the wrist pins in the pistons, so it should be as a simple as a crank swap. Be sure to replace the rod and main bearings too if you do this since you'll running the same rods on a differant journal.

Wouldn't he most likely have to change pistons too?

 

[hotrodpc]

The 63 is running!!! I still got to get the holly blue electric fuel pump(just got one on i had 30gph) got to get the shifter and got to get the drive shaft done-got to get the exhaust done-then it be back on the road. Iv been tinkering with the 327 doing the little things this 327 will be a quick project i got everything but a few odds and ends and just need the holly blue electric fuel pump on this one two but thought about just putting in the stock manual fuel pump and later getting the other pump to get it in and going. I will take some pics this after noon and give ya'll a look see.

You mean the motor starts??? Sounds like you got a bit of work to do before its actually RUNNING. So you are running the 327 in it then??? This is obviously a large journal 327 engine??? Why not find a 350 crank and put in this thing. You'll notice a significant horesepower/torque increase. More cubes, and higher compression. Both the 327 and the 350 run the 5.7 in con rods, same compression height at the wrist pins in the pistons, so it should be as a simple as a crank swap. Be sure to replace the rod and main bearings too if you do this since you'll running the same rods on a differant journal.

Wouldn't he most likely have to change pistons too?

I don't think so 66N. Don't 327 and 350 have the same compression height on the 5.7 con rod? I think its just a simple crank only swap. In most cases you're right, but I am farily certain, 327 and 350 pistons are one of the rare interchangeables. Both are 4.0 bore OEM, use the same compression height. Only difference is, the 350 crank pulls the piston deeper into the bore to gain the cubic inch, which also will increase compression.