| FAQ |
| Members List |
| Social Groups |
| Calendar |
| Search |
| Today's Posts |
|
#1
11-05-2002, 07:39 PM
|
|||
|
|||
Here is the combo:
468 (4.185 x 4.25) Rpm intake Slightly prepped E-heads Crower Hyd. 236/242 about .550" lift with 1.6 roller rockers on 108 lsa 850 HP series Carb Would the Hooker Super Comps be too big with 2" primaries for my application? Also, this combo will get some spray, and larger cam later on down the road.... Would the large primaries be something I could "grow" into, or am I better off looking for a 1 7/8" hedman? thanks, George Hill 
__________________
George Hill '63 Star Chief, '95 Chevy P/U, lots of BMW motorcycles and cars |
|
#2
11-05-2002, 07:39 PM
|
|||
|
|||
|
Here is the combo:
468 (4.185 x 4.25) Rpm intake Slightly prepped E-heads Crower Hyd. 236/242 about .550" lift with 1.6 roller rockers on 108 lsa 850 HP series Carb Would the Hooker Super Comps be too big with 2" primaries for my application? Also, this combo will get some spray, and larger cam later on down the road.... Would the large primaries be something I could "grow" into, or am I better off looking for a 1 7/8" hedman? thanks, George Hill
__________________
George Hill '63 Star Chief, '95 Chevy P/U, lots of BMW motorcycles and cars |
|
#3
01-30-2003, 06:06 PM
|
|||
|
|||
|
I would have to say thay you shouldn't have any problem running the 2" primaries.
|
|
#4
01-31-2003, 02:43 PM
|
|||
|
|||
|
With the plans for additional mods to the engine I think you should just go ahead and get the 2" primary headers. With the current setup 1.875" primaries are probably optimal but why spring for 2 sets if you don't have to.
__________________
"Man did not weave the web of life, he is merely a strand in it. Whatever he does to the web, he does to himself." - Chief Seattle |
|
#5
02-04-2003, 11:51 AM
|
||||
|
||||
|
Tough question.
The cam is the Intake bottleneck. Since the Cam ovelap is low, you will have less sensitivity to EXH system woes. 1.65 rockers on both, and the 2"primaries will be OK. Headpipe and muffler system will need critical design to work with 2"Primaries. 1.63 1 5/8" good to 11.0 @ 123MPH 1.76 1 3/4" bigger 1.88 1 7/8" bigger yet 2" biggest Small Primaries preserve EXH velocity, allowing less sensitivity to "full exhaust system" restrictions downstream. "tbdET/1xxMPH/1.xx 60foot/28"/3.54:1/10"/469 #48/Flat HYD/DualQ-Jets/Offyl/3xx0Lbs 11.00/123MPH/1.50 60foot/29.5"/4.10:1/10"/469 #48/FlatHYD/DualQuad/Wenzler/3250Lbs 12.00/112MPH/1.61 60foot/26"/3.31:1/10"/469 #48/FlatHYD/Q-Jet/Torker/3650Lbs 12.70/103MPH/1.71 60foot/28"/4.10:1/12"/469 #48/FlatHYD/Q-Jet/Torker/3950Lbs"
__________________
95 Towncar that needs more TQ. Sold 2023: 12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
| Reply |
|
|
The PY Online Forums is the largest online gathering of Pontiac enthusiasts anywhere in the world. Founded in 1991, it was also the first online forum for people to gather and talk about their Pontiacs. Since then, it has become the mecca of Pontiac technical data and knowledge that no other place can surpass.
Linear Mode
