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Forum: Pontiac - Street 04-08-2023, 04:28 PM
Replies: 11
Views: 991
Posted By neill
Hi Steve, with the intake valve upgrade on the...

Hi Steve, with the intake valve upgrade on the 47's will you be staying with the 45 degree seat?
Forum: Pontiac - Street 03-26-2023, 01:20 PM
Replies: 20
Views: 2,108
Posted By neill
Hello, out of curiosity has anybody tried opening...

Hello, out of curiosity has anybody tried opening up the chambers on these heads? I see suppliers advertising the cnc chamber volume of your choice. Are they using the same castings and valve lengths...
Forum: Pontiac - Street 06-26-2021, 12:35 AM
Replies: 21
Views: 4,285
Posted By neill
NGK ur5 should work and use the smaller gap.035....

NGK ur5 should work and use the smaller gap.035. Taper seat. Are they dished pistons? Flat tops would give 9.5 compression. Prolly need pretty good fuel with that cam. I have similar combo with ram...
Forum: Pontiac - Street 04-29-2021, 01:50 AM
Replies: 35
Views: 10,363
Posted By neill
Appreciate all the input guys thanks

Appreciate all the input guys thanks
Forum: Pontiac - Street 04-27-2021, 11:56 PM
Replies: 35
Views: 10,363
Posted By neill
I am installing an aeromotive 340lph tank and...

I am installing an aeromotive 340lph tank and universal bypass regulator. They want a 1/2" return line. Just wondering what people here would suggest for this. I have a long enough piece of 1/2"...
Forum: Pontiac - Race 04-27-2021, 11:30 PM
Replies: 18
Views: 4,138
Posted By neill
I did exactly what you did trying to gain height...

I did exactly what you did trying to gain height in the short turn. I cleaned it up as you did and took it to a friend at a rad shop. He used the torch on the port and fed the rod through the hole...
Forum: OHC-6 TECH 04-16-2021, 12:08 AM
Replies: 14
Views: 3,196
Posted By neill
Okay, thanks again Jeff. I did buy a few pieces...

Okay, thanks again Jeff. I did buy a few pieces from Rob already so I may talk to him again.
Forum: OHC-6 TECH 04-15-2021, 12:09 AM
Replies: 14
Views: 3,196
Posted By neill
When you say that you diamond lap the followers,...

When you say that you diamond lap the followers, do you mean that you use a lapping compound on the hardened surface that rides on the cam? Do you also do the other contact points? Do you use a...
Forum: OHC-6 TECH 04-11-2021, 11:12 AM
Replies: 14
Views: 3,196
Posted By neill
Thanks Jeff, I will go over all that this morning

Thanks Jeff, I will go over all that this morning
Forum: OHC-6 TECH 04-10-2021, 01:38 PM
Replies: 14
Views: 3,196
Posted By neill
Valve stem installed height

Hi all, just got my head back from the machine shop and I just want to do a quick check to make sure the stems are at the correct height but I can’t find the specifications anywhere. Does anyone have...
Forum: Pontiac - Street 04-15-2020, 01:09 AM
Replies: 8
Views: 2,674
Posted By neill
Hi, I built my 455 with the same issues that Jim...

Hi, I built my 455 with the same issues that Jim is talking about for deck height, manifold fit etc. Are Ross pistons a possible answer to achieving a custom compression height so as to not have to...
Forum: Pontiac - Race 11-09-2019, 02:41 PM
Replies: 5
Views: 1,995
Posted By neill
An interesting read, We race with a guy running...

An interesting read, We race with a guy running an s10 evac pump
http://grannys.tripod.com/evac.html
Forum: Pontiac - Street 11-04-2019, 01:38 AM
Replies: 7
Views: 1,079
Posted By neill
here is one

here is one
Forum: Pontiac - Street 11-03-2019, 08:55 PM
Replies: 7
Views: 1,079
Posted By neill
secondaries not opening

Hi all, When I put the shifter in low gear and bring it up to about 4000 rpm and then walk on it the secondaries don"t seem to open. When I hit second and the rpms drop they open up but not right...
Forum: Pontiac - Street 09-25-2019, 01:37 AM
Replies: 7
Views: 1,057
Posted By neill
If the timing can be changed by moving the...

If the timing can be changed by moving the distributor then it can be changed by the movements within the distributor.
Forum: Pontiac - Street 09-23-2019, 10:55 PM
Replies: 32
Views: 3,143
Posted By neill
I have always used the seat to seat duration...

I have always used the seat to seat duration numbers (advertised duration) when comparing cams, it looks like you are using the .050 numbers. In the past I have had best success in the 6.5 to 6.8...
Forum: Pontiac - Street 05-22-2019, 12:18 AM
Replies: 160
Views: 28,905
Posted By neill
Thanks guys for posting all of this. It is very...

Thanks guys for posting all of this. It is very expensive learning how to make one of these builds live on your own and make power without others experiences. I believe 25 lbs. torque with those...
Forum: Pontiac - Street 12-30-2018, 09:40 PM
Replies: 12
Views: 822
Posted By neill
Wow that's really close

Wow that's really close
Forum: Pontiac - Street 12-30-2018, 09:37 PM
Replies: 12
Views: 822
Posted By neill
After mixing and matching pistons and rods and a...

After mixing and matching pistons and rods and a lot of measuring I have 2 pistons .0025 above the deck and 2 pistons .005 above the deck and the rest in between. Could not have done this with...
Forum: Pontiac - Street 12-30-2018, 09:19 PM
Replies: 12
Views: 822
Posted By neill
I found that I had gone through on the other head...

I found that I had gone through on the other head when I tried to cc the intake port. I put those ones aside and sent a set of 6x-4's to the machine shop to put guides in. I won't push it so far next...
Forum: Pontiac - Street 12-30-2018, 01:50 AM
Replies: 12
Views: 822
Posted By neill
Thanks for the responses, good answers from...

Thanks for the responses, good answers from knowledgeable people makes this website great!! Neill
Forum: Pontiac - Street 12-29-2018, 08:49 PM
Replies: 53
Views: 3,641
Posted By neill
once when priming an oil pump with an old screw...

once when priming an oil pump with an old screw driver and a drill I was unable to get the distributor in after. I had accidently spread the ears apart on the driveshaft. I managed to squeeze them...
Forum: Pontiac - Street 12-29-2018, 08:37 PM
Replies: 12
Views: 822
Posted By neill
I used a dial indicator to find TDC and put a...

I used a dial indicator to find TDC and put a straight edge across the top of the piston in line with the wrist pin, then measured with a feeler gauge between the straight edge and the block.
Forum: Pontiac - Street 12-29-2018, 08:07 PM
Replies: 12
Views: 822
Posted By neill
deck height

For you engine builders out there, Just got my block and rotating assembly back from the machine shop. They line honed it and zero decked the block. I installed the four corner pistons and they are...
Forum: Pontiac - Street 10-23-2018, 10:41 PM
Replies: 77
Views: 9,149
Posted By neill
Hi Steve, thanks for posting all of this, its...

Hi Steve, thanks for posting all of this, its great info! Is it important to match the short turn radius of the exhaust to the bowl size like the intake? And will/would you increase the height of...
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