[95ramairformula]

Originally Posted by PONTIAC LARRY

I said 8-9.5:1 , my mid-low 2nd 70-1/2 T/A was a undecked 70' 400 block with cast 8 valve relief replacement pistons. Regular Felpro blue gaskets and #12 big valve heads( my compression was no more than 9:5, probably less. stock 70 intake and 750 Qjet, th350 , with 2800 11" , repop HO/RA manifolds ,2-1/4 pipes, 3.55 gears. I did not say his exact combo would run 13's , merely what I have done with that cam in a comparable combo. Another buddy at the same time, had a 78 t/a , 400, with 2801 summit cam, small valve #15 68 heads, headers, iron intake, qjet , 3.23's , th350/11"... we were dead even at all speeds , every time we raced. Another one.. 80 Formula ,SUMMIT 2801, 400 , 8-valve relief cast pistons, 3.23's , th350/stock converter, log manifolds, #62 heads with matching 69 Qjet intake.. it went 13.7@102 on street tires in the 80's., Another one.. 76 t/a 400 8-valve relief pistons. low-compression..summit 2801, #11 heads , small valves.. 8.0-8.5:1, th350/stock converter, log manifolds, 2.56 gears, no track time , but it ran very well. Had some hwy races with motorcycles and 454 1/2 swb pick ups.. did well against them..Probably ran 14's...
I am not calling any better than 14's for low compression combo, but with a sharp tune ,.. it can be ok... Lots of Comp Cam cheerleaders out there, but I and my friends are not.. Summit Cams have a great bang for the buck and also Doug Herbert is cool too..
Lots of cars are dogs , if the owners are not experienced or knowledgeable tuners or drivers for that matter.. Thats normal.. and man .. ditch that Torker II !!!
All I can say is a 2801 in a 400 works great and has predictable results and economy/idle quality better than a 110 ls Comp.. 112ls ..remember street car.. my car ran a best of 13.3 ..it turned slower times on other trips too..13.5,13.7..just mentioned the better ones.
This guy should try to find some cheap 68 small valve #17's or at least some 6x-4's or 73-74 #46's ..raise it up from 7.6:1 to 8.1-9:0 depending on which heads.

I must say some strong running motors. Not at all suprised with the compression they are at. Bottom line is the Summit cams are a good bang for the buck. When it comes to low compression ( under 8.5) the smaller XE cams from Comp flat out perform the Summit cams. The engineers have done there homework well on these. I have also heard that the new smaller Lunati Voodoo cams are also very good also. I really like the Crower cams and have had good success with them.

I have a friend with a 455 in a 65 GTO 4spd car. It has E heads and a Comp XE 274, it will flat slam you in the seat. Its what I call scary fast.