[cttempest]

Originally Posted by dmac

I still say use the 670s for the fact that they are bolt in ready to use with an adjustable valve train that can handle more lift and higher spring pressures and give you good compression. The 670s won't be as good a choice on a 400 if you want later, to use regular pump gas. Big valves are only a minor issue, as discussed, but for your purposes now, on a budget, with a better motor planned in the future, use the 670s.

But cc them. As I said, mine are already cut to 68 cc, and would need dished pistons to use on a 400. Use the 670s on your 350, and in the meantime, shop for good heads for your future build, with the right chamber size for what you plan.

I think you are right..As of now that's what I'm going to use.On top of everything,the46 heads need a bunch of work.The 670's are ready to go.

Then another fun part,which:
head gaskets
cam
rockers
springs
carb(would like to use Quadrajet)
intake(I have a Torker II,but thats probaly a bad idea)

I'm going to cc the 670's in the morning so we have a better idea of what were working with

Thank's for your help too.Putting up with me being a pain and beating a dead horse,ha

[1967Tempest]

Originally Posted by cttempest

Then another fun part,which:
head gaskets
cam

Good luck on head gaskets. When you find a retailer for correct 350 head gaskets, PM me and I will buy all of his/her stock. I have a 326 in my wagon and if I need HG's I wanna have them available.
You might find yourself getting Cometic's or another brand that is expensive, but worth it. Keep us posted on the gaskets. Victor Reinz used to make them, but I haven't seen a set in two years.

Cam:
Here is the most important question.. Where is this engine going to LIVE IN RPM's? You want torque off the line or rev to 6K?

My top 3 cams in order...

1. Isky Supercam 256/262
2. Melling SPC7 (068)
3. Summit 2801 OR, OR Comp cams 256DEH

I have had all 4 of these cams. #1 has electric motor torque off of the line. I had it in a 67 Tempest with TH350 with 2K stall and 2.56 one legger. Right rear tire HATED ME! That was in a 400. In a 350 it will be even bigger! It will breathe well to 4800-5K in a 350.

But seriously, let me know where you get the head gaskets.

[cttempest]

Originally Posted by 1967Tempest

Good luck on head gaskets. When you find a retailer for correct 350 head gaskets, PM me and I will buy all of his/her stock. I have a 326 in my wagon and if I need HG's I wanna have them available.
You might find yourself getting Cometic's or another brand that is expensive, but worth it. Keep us posted on the gaskets. Victor Reinz used to make them, but I haven't seen a set in two years.

Cam:
Here is the most important question.. Where is this engine going to LIVE IN RPM's? You want torque off the line or rev to 6K?

My top 3 cams in order...

1. Isky Supercam 256/262
2. Melling SPC7 (068)
3. Summit 2801 OR, OR Comp cams 256DEH

I have had all 4 of these cams. #1 has electric motor torque off of the line. I had it in a 67 Tempest with TH350 with 2K stall and 2.56 one legger. Right rear tire HATED ME! That was in a 400. In a 350 it will be even bigger! It will breathe well to 4800-5K in a 350.

But seriously, let me know where you get the head gaskets.

Yup,I've given up on finding the correct gaskets.Just making sure I use the best close enough gasket,ha.If by some miracle I come up with some,I will keep you in mind.One of theese days I'll dig through my stash.I had my 326 apart a few times back in the day and always bought full gasket sets.I;ll see what I saved

As far as rpm's,well,like I said,I don't race.Good street torque is what I'm looking for.I'm really leaning towards the 2801.From what I hear it seems like a good candidate.The car will see a few long haul trips this summer as usual.Going to Summer Nationals,upstate NY,etc.Definitely want to keep it pleasent to drive,but still run pretty mean.Yes I want it all

I had an isky cam years ago,in a 78 bird with a 400 and I know what you mean about the electric motor torque,ha

[rohrt]

Originally Posted by 1967Tempest

Cam:
Here is the most important question.. Where is this engine going to LIVE IN RPM's? You want torque off the line or rev to 6K?

My top 3 cams in order...

1. Isky Supercam 256/262
2. Melling SPC7 (068)
3. Summit 2801 OR, OR Comp cams 256DEH

I have had all 4 of these cams. #1 has electric motor torque off of the line. I had it in a 67 Tempest with TH350 with 2K stall and 2.56 one legger. Right rear tire HATED ME! That was in a 400. In a 350 it will be even bigger! It will breathe well to 4800-5K in a 350.

That is a heck of an endorsement for the Iskycam.
Duration at 050 inch Lift: 202 int./208 exh.
Advertised Duration: 256 int./262 exh
Factory Rocker Arm Ratio: 0.450 int./0.465 exh

Looks closer to the 067 cam specs.

I see you placed the 068 above the summit cam. I see your the second person to say they liked it a little better.

[Donovan]

Originally Posted by cttempest

Yup,I've given up on finding the correct gaskets.Just making sure I use the best close enough gasket,ha.

350 3.950" BORE .027" MLS HEAD GASKET

Cometic!
Worth the money. You get an excellent gasket, with the thickness at 0.027" you will improve compression and quench. Potentially reusable as well. It is the correct bore size!

http://www.ebay.com/itm/COMETIC-GASK...bd9030&vxp=mtr


Also, I once bought an old stock Felpro gasket set, for the whole engine. Specific to the 350. It was part number HS 8259 S

Look for that online and in ebay from time to time. Like this! Try harder fellas.

http://www.ebay.com/itm/Fel-Pro-Head...6ad857&vxp=mtr

[PontGuy]

Been avoiding jumping into 350 build recommendations again, but...

My vote is the 670 heads. Always thought they would be the ideal design for a 350. Compression ratio should come right in where you want it using flat tops. And valves are further away than the later chamber design allowing aftermarket cams without worrying about exhaust valve clearance to the cylinder walls. And you have them ready to bolt on. All pluses.

Only downside is my experience is that it is very easy to over-cam a 350 especially with big valve heads. A 350 doesn't need much duration to make a lot of power on top, but it comes at the expense of bottom end torque. And you don't want to do that with a 2.73 gear (hence the downside). The Isky cam looks interesting for what you are trying to do. The 2801 will act quite big in a 350 with that gear.

Yeah gaskets. I always got away with regular 400 CID Felpros without a problem, though less than ideal.

[PONTIAC LARRY]

Originally Posted by cttempest

As far as rpm's,well,like I said,I don't race.Good street torque is what I'm looking for.I'm really leaning towards the 2801.

Max street low end torque I would probably steer clear of the 2801 in a 350, probably better off not exceeding 210 @ 050 on intake and maybe running a 110 LSA cam instead of a 112 , this application would be one of the few times I would deviate from my usual cams. Although a Summit 2800 would be OK 204/214 420 442

[dmac]

I agree with both the previous posts. The 2801 is good in a 400, but more than you seem to want in a 350. Stick with one of the stock cams that were used in a 350. 068 would be a decent choice. If your compression ends up at 9:1 or so, with decent exhaust, and a 4 barrel carb, you'll have a good reliable vehicle you can drive for 50k miles with plenty of punch.

IF you want a little extra, before you assemble, get the pushrod holes opened up to allow for higher ratio rockers. While using a smaller cam, you add some duration and lift without adding a faster ramp on the cam. Make sure your springs can handle any added lift before doing that, though.

[Squidward]

Originally Posted by PONTIAC LARRY

Max street low end torque I would probably steer clear of the 2801 in a 350, probably better off not exceeding 210 @ 050 on intake and maybe running a 110 LSA cam instead of a 112 , this application would be one of the few times I would deviate from my usual cams. Although a Summit 2800 would be OK 204/214 420 442

Running the 2800 in a 350 right now. I like. Fun cam, but I would enjoy a tiny bit more. Definitely comes to life at 2500+.

[1967Tempest]

Originally Posted by rohrt

That is a heck of an endorsement for the Iskycam.
Duration at 050 inch Lift: 202 int./208 exh.
Advertised Duration: 256 int./262 exh
Factory Rocker Arm Ratio: 0.450 int./0.465 exh

Looks closer to the 067 cam specs.

I see you placed the 068 above the summit cam. I see your the second person to say they liked it a little better.

It sounds like a 067 but I can assure you that it is not. It is way fun and closer to an 068 in performance.

The reason I liked that cam in an automatic with a 2.56 rear is that the initial torque multiplication launched the car. If you were standing on the side of the car and watched me WOT take off, it would lift the car forward.

In a 350 it would be a little more lopey...
http://www.youtube.com/watch?v=pPfThh4dKRk

[Donovan]

Originally Posted by Squidward

Running the 2800 in a 350 right now. I like. Fun cam, but I would enjoy a tiny bit more. Definitely comes to life at 2500+.

I had the 2800 in my tired ole 350HO. I really was surprised at how consistent it was. I wanted a bit more and arrived at the idea of 1.65 rockers. I got a set of stamped units and tried the alternately on exhaust and then on intake. After that on both. Best feel was a full set. No loss of torque, it seemed to extend mid and upper power.

I checked and didn't need to do any clearancing for the 1.65s on the 2800 with stock heads. It was close.

You might consider trying it! cheap easy bolt on and easy to change your mind.