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Search took 0.01 seconds. Search: Posts Made By: mrmark1957
Forum: Pontiac - Street 03-11-2023, 01:46 AM
Replies: 43
Views: 3,977
Posted By mrmark1957
I bought a '79 T/A 6.6 litre WS-6, 4 speed Trans...

I bought a '79 T/A 6.6 litre WS-6, 4 speed Trans Am in '83 from the original owner with 22K miles on it for my future wife. Rear axle was 3.23 posi, absolutely all stock, no nothing. Took it to...
Forum: Pontiac - Street 01-03-2023, 11:51 PM
Replies: 61
Views: 5,586
Posted By mrmark1957
1967 Catalina- 6X-4 head 462, T-400 w 2.75 1st,...

1967 Catalina- 6X-4 head 462, T-400 w 2.75 1st, 2.56 posi.
1971 Olds 442-Shafiroff 540 pump gas Chevy, T-400 w 10"Coan, 3.08 Moser 12 bolt posi.
Forum: Pontiac - Street 12-16-2022, 01:04 AM
Replies: 17
Views: 1,410
Posted By mrmark1957
How much rpm difference, 200 to 300 rpm ?

How much rpm difference, 200 to 300 rpm ?
Forum: Pontiac - Street 10-30-2022, 03:57 AM
Replies: 62
Views: 6,240
Posted By mrmark1957
I have got a 73 Lemans with the stock low...

I have got a 73 Lemans with the stock low compression 400 with a quadrajet., stock dual exhaust and 3.23's. I ran it at the track with the stock big single snorkle air cleaner, then with the lid...
Forum: Pontiac - Street 10-16-2022, 02:06 PM
Replies: 108
Views: 8,374
Posted By mrmark1957
Although I did have a good experience at a Dairy...

Although I did have a good experience at a Dairy Queen way back when. I let my then girlfriend find an engagement ring in the glovebox of my 442 that I was planning to give to her. A couple of years...
Forum: Pontiac - Street 10-16-2022, 01:50 PM
Replies: 108
Views: 8,374
Posted By mrmark1957
Thanks for all the comments. I really am just...

Thanks for all the comments. I really am just interested in the throttle response and cranking compression of the XE256 compared to the stocker (066), as the car is a daily driver and will never see...
Forum: Pontiac - Street 09-02-2022, 02:00 PM
Replies: 53
Views: 4,548
Posted By mrmark1957
2 1/4" exhaust is too restrictive for that motor....

2 1/4" exhaust is too restrictive for that motor. I had years ago a similar setup to yours. At the track I lowered the 2 head pipes off the exhaust manifolds about 1/4 to 3/8 of an inch as they had...
Forum: Pontiac - Street 08-01-2022, 02:14 PM
Replies: 83
Views: 10,009
Posted By mrmark1957
I have heard the expression " When picking a...

I have heard the expression " When picking a camshaft it's better to guess on the small side and be disappointed rather than choose too large and be miserable "
Forum: Pontiac - Street 08-01-2022, 02:04 AM
Replies: 83
Views: 10,009
Posted By mrmark1957
The Summit 2801 cam doesn't do much in a low...

The Summit 2801 cam doesn't do much in a low compression 400 until about 3000 rpm. A buddy tried it in a 72 Lemans with 2.78 open rear and a stock THM 350 converter and it was soft on the low end.He...
Forum: Pontiac - Street 07-28-2022, 10:07 PM
Replies: 83
Views: 10,009
Posted By mrmark1957
Summit 2800 cam

I've replaced the 066 cam with a Summit 2800 cam in half a dozen low compression 400's for myself and customers cars. The 2800 has the same low speed driveability as the 066,feels like stocker
but...
Forum: Pontiac - Street 07-24-2022, 03:10 AM
Replies: 83
Views: 10,009
Posted By mrmark1957
Been there, done that

I had a '67 wagon as my first car back in 1974 and did the same as you are doing. Q-jet, 4 barrel stock intake and dual exhaust. New timing gears and chain. Shift kit in the trans and spring kit in...
Forum: Pontiac - Street 07-13-2022, 12:50 AM
Replies: 36
Views: 4,192
Posted By mrmark1957
The regular Performer made more torque under 2500...

The regular Performer made more torque under 2500 - 3000 rpm than a cast iron 1973 EGR intake on my low compression 73 400 inch motor with 4X heads,a 204/214 degree cam and stock TH400 converter. The...
Forum: THE LOBBY 01-18-2022, 04:44 AM
Replies: 10
Views: 1,574
Posted By mrmark1957
No coincidence. That's how people who have passed...

No coincidence. That's how people who have passed on let us know they are OK and still around us. I have had instances like that many times.
Forum: Pontiac - Street 12-04-2021, 07:11 PM
Replies: 8
Views: 1,800
Posted By mrmark1957
I rechecked the WV website. They make the Rally...

I rechecked the WV website. They make the Rally I in a 5" backspace, but not the Rally II. The Rally II is available with a 5" backspace in the full size pattern (5 x 5") only. My mistake.
Showing results 1 to 14 of 14

 
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