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PY Online Forums - Bringing the Pontiac Hobby Together
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Posts Made By:
Cliff R
Forum:
Pontiac - Street
06-14-2024, 08:41 AM
Replies:
15
Modifying a 73 Quadrajet for a TV cable?
Views:
269
Posted By
Cliff R
Skip's got it right, just add the fitting to...
Skip's got it right, just add the fitting to what you have now. I would open up the "slot" so you can move the attachment point up/down to nail down the best geometry. You will still have PLENTY...
Forum:
Pontiac - Street
06-14-2024, 07:30 AM
Replies:
40
Budget'ish engine build choices
Views:
880
Posted By
Cliff R
The failure rate for cast cranks at or above the...
The failure rate for cast cranks at or above the 700hp mark is 100 percent!
I tried to use them here WAY back when they first came out. At that time I was using one of the best crank grinders in...
Forum:
Pontiac - Street
06-14-2024, 07:12 AM
Replies:
9
Q-Jet Secondary Jets
Views:
347
Posted By
Cliff R
The reason I don't like the aftermarket ones from...
The reason I don't like the aftermarket ones from the suppliers is that the retainer washer is too thick, and the size of the discs is incorrect.
When I was still rebuilding and restoring carbs...
Forum:
Pontiac - Street
06-14-2024, 07:08 AM
Replies:
12
HELP! Charging system issues
Views:
403
Posted By
Cliff R
I have had ZERO luck with anything...
I have had ZERO luck with anything "remanufactured" in China or any starters, alternators, carburetors, distributors, etc from China.
My best advice is to obtain an original SI alternator and...
Forum:
Pontiac - Street
06-13-2024, 05:40 AM
Replies:
12
HELP! Charging system issues
Views:
403
Posted By
Cliff R
Couple of things to mention. IF you install...
Couple of things to mention.
IF you install a new SI style alternator make sure that the battery is FULLY charged. If you don't it goes to full charge and works the piss out of the regulator and...
Forum:
Pontiac - Street
06-13-2024, 05:21 AM
Replies:
17
Q-Jet on Olds 455 surprizes Nicks Garage
Views:
922
Posted By
Cliff R
While we are on the subject of Q-jets and CFM...
While we are on the subject of Q-jets and CFM ratings, performance potential, etc, consider this. Below is a link to Brent Flynn's Firebird at the track. It's a pretty "basic" engine build, 408cid,...
Forum:
Pontiac - Street
06-13-2024, 05:08 AM
Replies:
17
Q-Jet on Olds 455 surprizes Nicks Garage
Views:
922
Posted By
Cliff R
The only big cfm early carburetors are the 1971...
The only big cfm early carburetors are the 1971 HO 455 units (and the 1971 400 4speed), 1971-74 Buick 455's and 1973-74 Super Duty.
All the non CCC front inlet carbs from 1975-up will be the...
Forum:
Pontiac - Street
06-13-2024, 05:08 AM
Replies:
17
Q-Jet on Olds 455 surprizes Nicks Garage
Views:
922
Posted By
Cliff R
The only big cfm early carburetors are the 1971...
The only big cfm early carburetors are the 1971 HO 455 units (and the 1971 400 4speed), 1971-74 Buick 455's and 1973-74 Super Duty.
All the non CCC front inlet carbs from 1975-up will be the...
Forum:
Pontiac - Street
06-13-2024, 04:54 AM
Replies:
9
Q-Jet Secondary Jets
Views:
347
Posted By
Cliff R
They are difficult to remove without damaging...
They are difficult to remove without damaging them.
Replacements are available but they are not OEM quality, so I don't stock them. If and when I've needed to replace them I'll remove the bottom...
Forum:
Pontiac - Street
06-11-2024, 07:31 AM
Replies:
17
Q-Jet on Olds 455 surprizes Nicks Garage
Views:
922
Posted By
Cliff R
Good thing I didn't give them a 1976 or later...
Good thing I didn't give them a 1976 or later Olds Q-jet for the testing or they would have been dialing 911 for old Tony!
The unit they used was a 1970-74 style Olds Q-jet. They aren't that...
Forum:
Pontiac - Race
06-09-2024, 08:14 AM
Replies:
22
Beehive pressures for HR cams
Views:
978
Posted By
Cliff R
When you look at what a valve spring has to do...
When you look at what a valve spring has to do it's AMAZING any of that works at all!
Weight in the valve train is NOT your friend, but it goes far beyond just the springs and retainers. You have...
Forum:
Pontiac - Street
06-09-2024, 07:16 AM
Replies:
16
NEED ADVICE ON MY 400 PONTIAC BUILD
Views:
815
Posted By
Cliff R
Squish distance should be around .035-.039". I...
Squish distance should be around .035-.039". I woln't put one of these engines together with over .040" squish for any reason. For most I'll just zero deck and use a .039" Felpro head gasket. I've...
Forum:
Pontiac - Street
06-08-2024, 07:12 AM
Replies:
16
NEED ADVICE ON MY 400 PONTIAC BUILD
Views:
815
Posted By
Cliff R
As mentioned poor cam choice. I wouldn't use an...
As mentioned poor cam choice. I wouldn't use an XE cam in anything, even the larger ones. That technology just isn't the right choice for Pontiac engine builds right to start with. Not enough seat...
Forum:
Pontiac - Street
06-05-2024, 09:37 AM
Replies:
8
Hunting Super Duty camshaft
Views:
577
Posted By
Cliff R
For sure it acts very "mild" in a 455 HO or Super...
For sure it acts very "mild" in a 455 HO or Super Duty build. It's the smallest HR cam I'd even look at for one of those engines, even at or close to the "low" stock compression........
Forum:
Pontiac - Street
06-05-2024, 07:21 AM
Replies:
8
Hunting Super Duty camshaft
Views:
577
Posted By
Cliff R
Below is a cam card and dyno runs of a pretty...
Below is a cam card and dyno runs of a pretty "basic" 455 Super Duty build I did here. The engine was pretty "stock" aside from some minor head porting from an earlier ill-fated engine build. ...
Forum:
Pontiac - Street
06-04-2024, 01:52 PM
Replies:
8
Hunting Super Duty camshaft
Views:
577
Posted By
Cliff R
It's just a lot easier to forget about using the...
It's just a lot easier to forget about using the original distributor gear and also no need whatsoever to run an 80psi oil pump in one.
I've built a good many 455 HO and Super Duty engines. They...
Forum:
Pontiac - Street
06-04-2024, 06:07 AM
Replies:
30
New motor tuning mystery
Views:
1,270
Posted By
Cliff R
This has been said thousands of times I'm sure....
This has been said thousands of times I'm sure. But, NEVER EVER EVER waste your time trying to get aftermarket HEI advance weights and cams to work! Tried many years ago. Moroso, Mr. Gasket, etc....
Forum:
Pontiac - Street
06-03-2024, 08:33 AM
Replies:
30
New motor tuning mystery
Views:
1,270
Posted By
Cliff R
"Not an option as in it is a must do?" Yes,...
"Not an option as in it is a must do?"
Yes, HEI's are designed to stop the mechanical advance when the "flats" on the weights reach the "flats" on the center cam. The factory springs are strong...
Forum:
Pontiac - Street
06-02-2024, 02:47 PM
Replies:
30
New motor tuning mystery
Views:
1,270
Posted By
Cliff R
You cannot do this with an HEI, unless it’s been...
You cannot do this with an HEI, unless it’s been modified for a positive stop,
+2
I'll also add that welding or making a positive stop for an HEI is NOT an option. They are designed to stop...
Forum:
Pontiac - Street
05-26-2024, 07:37 AM
Replies:
2
TH350 accumulator spring missing
Views:
254
Posted By
Cliff R
Accumulators are used to soften and/or delay the...
Accumulators are used to soften and/or delay the shift slightly. They are in route with the fluid path to the apply piston in a clutch drum or to a servo that applies a band.
The factory was...
Forum:
Pontiac - Street
05-25-2024, 08:02 AM
Replies:
22
Safe level of horsepower in a 1977 XA 400 block build?
Views:
934
Posted By
Cliff R
Find a better block and wear a condom if you go...
Find a better block and wear a condom if you go to Thailand!......Also make sure to take some Sevin dust with you on that adventure....LOL
Seriously, I would NOT for any reason use a 557 block. ...
Forum:
Pontiac - Street
05-23-2024, 06:01 AM
Replies:
11
‘69 with 10.5:1 CR advertised. what was the actual CR?
Views:
559
Posted By
Cliff R
Comp grinds everything in their arsenal on a...
Comp grinds everything in their arsenal on a tight LSA. That NEVER works out well until you start getting into some of their grinds with a lot of seat timing and even then there are a LOT better...
Forum:
Pontiac - Street
05-22-2024, 04:22 AM
Replies:
34
Best compression for Crower 60919 cam help
Views:
2,080
Posted By
Cliff R
At least 10 to 1, wouldn't hurt my feelings if it...
At least 10 to 1, wouldn't hurt my feelings if it came out a little higher.
My own 455 with 6X-4 heads was right at 9.97 to 1 and EASILY managed pump gas, even 89 octane and never grumbled much....
Forum:
Pontiac - Street
05-19-2024, 08:12 AM
Replies:
15
Help Decipher CC HR Cam
Views:
890
Posted By
Cliff R
I used SD's Old Faithful cam 236/245/112 in my...
I used SD's Old Faithful cam 236/245/112 in my last 455 at 11.3 to 1 compression. It was pretty "tame" at idle making 13.5" vacuum at 750rpm's with only 10 degrees initial timing. Fine on pump gas...
Forum:
Pontiac - Street
05-19-2024, 08:01 AM
Replies:
34
Best compression for Crower 60919 cam help
Views:
2,080
Posted By
Cliff R
The "old" version of the 60919 cam is a SPC-8...
The "old" version of the 60919 cam is a SPC-8 from CMC. Crower simply "juggled" the numbers to make it look like their own cam.
Tey were NOT on a 112LSA, nor were they shorter seat timing.
...
Showing results 1 to 25 of 500
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