Driveability of high compression cars

[Xplantdad]

Rick...just pump some fuel out of your Sunoco Gas pump!

[@wot]

just curious how some of these l78 and l72 cars are tuned. i have 36 degrees of total mechanical advance in by 2750 rpm, no vacuum advance. i nee to mix race fuel to control detonation.

[musclcar]

my camaro has an 11.5:1 350sbc and i run a mix of either VP MS103 or VP C12 with 91 octane pump gas.i can get all the race gas i need thru our race team and the price is right "FREE".ahh the smell of race gas coming from the exhaust of a healthy sounding street car

[juliosz]

I went through the engine on my 68 Z a couple of years ago. I went with all stock components except for roller tip rockers on my 302. I typically run about 10 gallons of 93 octane to 5 gallons of 110. Many times however, I run straight 93 with no detonation (total timing set to 36 degrees and running R45s). At first, I couldn't believe I could do this but then I read this article in Chevy Hi-Perf and it makes perfect sense to me. So those of you running hi compression + long duration cam may want to take this into consideration.

[68l30]

Correct.....I run a high duration cam as well.If I remember correctly it's about 238 or 302 total duration.A lot of cam but very streetable with a 3800 converter and 4.10 rear.It runs very happy in the top end, 6500 +.....I get a little nervous up there though.....


Steve