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Search took 0.61 seconds. Search: Posts Made By: cfmcnc
Forum: Pontiac - Race 08-11-2023, 10:41 PM
Replies: 25
Views: 1,024
Posted By cfmcnc
How many NHRA ProStock engines are running...

How many NHRA ProStock engines are running gapless rings,How many Nascar Cup engines are using gapless..I know the answer!
Forum: Pontiac - Race 05-06-2023, 02:34 PM
Replies: 24
Views: 2,974
Posted By cfmcnc
Q16 is our favorite fuel .It makes power ,Has a...

Q16 is our favorite fuel .It makes power ,Has a wide tuning window and is very consistent on the track.That being said The carb must be built Q16 Specific!.Main jet well etc must be sized for...
Forum: Pontiac - Race 05-19-2022, 01:00 PM
Replies: 22
Views: 3,386
Posted By cfmcnc
Larger bore to unshroud valves and more cu in.

Larger bore to unshroud valves and more cu in.
Forum: Pontiac - Race 05-18-2022, 03:21 PM
Replies: 22
Views: 3,386
Posted By cfmcnc
Just moved in the machining program.It can be...

Just moved in the machining program.It can be done again..
Forum: Pontiac - Race 05-18-2022, 09:52 AM
Replies: 22
Views: 3,386
Posted By cfmcnc
We had a IA 2 Iron block made with a .040...

We had a IA 2 Iron block made with a .040 additional bore spacing for a project for Frank G.It found its way to a AP customer and was finished as a very big power NA engine.
Forum: Pontiac - Race 03-07-2022, 02:08 PM
Replies: 65
Views: 11,477
Posted By cfmcnc
AS long as the valve springs are correct for...

AS long as the valve springs are correct for application and set up correctly.
Correctly means checking net lift with loaded spring and lash as the engine sees.Set springs off this net lift...
Forum: Pontiac - Race 03-06-2022, 03:01 PM
Replies: 65
Views: 11,477
Posted By cfmcnc
WE did pre production testing for Isky on the...

WE did pre production testing for Isky on the bushed lifters,We have them running with 400#plus seat pressure,1200# plus open pressure at 1.00inch plus net lift some at 1.100..They were the first to...
Forum: Pontiac - Race 02-19-2022, 02:54 PM
Replies: 121
Views: 8,791
Posted By cfmcnc
Just a note.When you eliminate the head gasket...

Just a note.When you eliminate the head gasket thickness you have to make an adjustment in the piston to head clearance.
Forum: Pontiac - Race 08-19-2021, 09:45 AM
Replies: 10
Views: 1,598
Posted By cfmcnc
Electronics Specialties out of Chicago.Sold on...

Electronics Specialties out of Chicago.Sold on Amazon ,Under 100$.Have one on our dyno six years now after our 2 old Sun and several Craftsman died.
Forum: Pontiac - Race 07-25-2021, 04:09 PM
Replies: 22
Views: 5,094
Posted By cfmcnc
Firing order connects to Plenum manifold...

Firing order connects to Plenum manifold distribution,Thermal grid and hit on crankshaft position.Traditional Pontiacs have the pass side cylinders ahead of the drivers side on the crank..Dyno...
Forum: Pontiac - Race 06-16-2021, 09:47 AM
Replies: 16
Views: 2,771
Posted By cfmcnc
Send a sample of your gasket to Cometic.They can...

Send a sample of your gasket to Cometic.They can make an exact duplicate in a material that has metal mesh in the middle.Have done several like this for engines that had intake gaskets walking.
Forum: Pontiac - Race 04-25-2021, 01:11 AM
Replies: 5
Views: 1,531
Posted By cfmcnc
Go to the bigger intake valve with corresponding...

Go to the bigger intake valve with corresponding port crossection work .OK to stay with the 1.66 EX.Have made 1138HP with 1.66 EX NA.
Forum: Pontiac - Race 04-25-2021, 01:07 AM
Replies: 25
Views: 5,857
Posted By cfmcnc
WE have the Meta Lax system here..We do all new...

WE have the Meta Lax system here..We do all new blocks.And some used blocks by request..
Forum: Pontiac - Race 04-11-2021, 04:05 PM
Replies: 30
Views: 5,778
Posted By cfmcnc
117 is correct.We have other Pontiac cams done at...

117 is correct.We have other Pontiac cams done at 118-120 per application.Just for info current NHRA Pro-Stocks at 119.5-120LSA.Bill C.
Forum: Pontiac - Race 04-11-2021, 03:55 PM
Replies: 30
Views: 5,778
Posted By cfmcnc
Criteria for this build was Bracket racing,We...

Criteria for this build was Bracket racing,We sizes the induction tract to make peak HP at 7200RPMs keeping the usable power curve at or under 8000RPMs. Bill C.
Forum: Pontiac - Race 02-04-2021, 11:21 AM
Replies: 4
Views: 1,619
Posted By cfmcnc
AS cast Tiger 1s were 415-425 cfm with chamber...

AS cast Tiger 1s were 415-425 cfm with chamber and bowl work.2.250-1,800 valves.Full CNC poert was 450-455 with 2.250 valve 462-465 with 2.300 valve..This head is very sensitive in the valve seat...
Forum: Pontiac - Race 08-02-2020, 01:35 PM
Replies: 21
Views: 3,657
Posted By cfmcnc
Have had intake manifolds where the port work...

Have had intake manifolds where the port work steered fuel away from a particular cylinder.Firing order influences intake traffic.Weld o2 bungs in the suspected primary pipes .Best test is to dyno...
Forum: Pontiac - Race 07-31-2020, 11:53 PM
Replies: 18
Views: 3,334
Posted By cfmcnc
The most popular Reversion plates with ditch...

The most popular Reversion plates with ditch surrounding a shear lip works best when the port SEES the ditch and it is not shrouded from the view up the port to the ditch.What happens is in...
Forum: Pontiac - Race 07-15-2020, 05:34 PM
Replies: 215
Views: 32,454
Posted By cfmcnc
Well , not exactly ...but the BES port program is...

Well , not exactly ...but the BES port program is one option . Tony and crew are doing 6 pairs ??? of standard exhaust flange location heads for AP .

A couple of other pairs that were simply...
Forum: Pontiac - Race 05-25-2020, 02:20 PM
Replies: 42
Views: 12,258
Posted By cfmcnc
Have seen this before ,Seems to be when the...

Have seen this before ,Seems to be when the header sizing is not correct.Bill C.
Forum: Pontiac - Race 05-25-2020, 12:30 PM
Replies: 42
Views: 12,258
Posted By cfmcnc
John ,Are you talking about the last line on the...

John ,Are you talking about the last line on the posted dyno sheet where it dumped 30HP?
Forum: Pontiac - Race 05-25-2020, 10:21 AM
Replies: 42
Views: 12,258
Posted By cfmcnc
BSFC.Is a measurement of Pounds of fuel per...

BSFC.Is a measurement of Pounds of fuel per Horsepower Hour.It shows how efficiently an engine is performing.For example well refined race engines will be mid to high 30s to low 40s.A Q-Jet on a dual...
Forum: Pontiac - Race 05-24-2020, 08:09 PM
Replies: 42
Views: 12,258
Posted By cfmcnc
I also mentioned it on the FB post ,It looks like...

I also mentioned it on the FB post ,It looks like they removed it.So much for trying to help someone ,Bill C.
Forum: Pontiac - Race 05-24-2020, 05:22 PM
Replies: 42
Views: 12,258
Posted By cfmcnc
The selector knob on the dyno for fuel turbines...

The selector knob on the dyno for fuel turbines is in the wrong position.The numbers are half what they should be.Someone is not paying attention.Bill C.
Forum: Pontiac - Race 04-24-2020, 11:47 PM
Replies: 20
Views: 5,406
Posted By cfmcnc
Article was early 90s,WE had built some NHRA...

Article was early 90s,WE had built some NHRA cheater lifters for Stock Eliminator with Titanium parts inside and had good luck so John Palisi RIP from our shop wanted to use solids on Frank Gostylas...
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