Well played sir! I read this entire thread, good stuff! I look forward to having my engine broken in and see what the funny gas does. Keep this thread updated please. MarkO
If I could get some hands on carb n timing adjustment help id have no problem with a 200 shot on my stock 350. any old cheby v8 can take a 125 shot, I know my girl can take 75 more...
What was your best 1/8th?? I never could get the 60 ft down on the turbo car. 1.9 was my best ever. But the suspension was bone stock with a front sway bar as well..
In the 1/8 I went on the nitrous 1.61 60 ft. 7.522 1/8 89.99 mph with 350 trans 3500 stall convertor. 2004r trans in 1/8 1.64 60 ft 7.500 1/8 89.97 mph and using a 3000 stall with lockup. 1/4-11.87@112.42 350 trans. 1/4- 11.81 @114.18 mph using 2004r trans.
It's coming, my motor is now 20 years old, I really need a rebuild. If I do put the intake on, I am not going to go all out on the juice. As a matter of fact, I will more than likely take it down to a 50-75 shot. I bet I can get a low 12 out of a 50 shot. I went 12.10 on a 75 shot. I have over 500 runs down the track all spun to 6 grand then a good 30-50 runs on nitrous, spun to 5800 rpm. Just now really started to run the car some, I did go to Quaker Raceway recently. I did not touch the car since the 2008 run a few posts back put in new gas ran around for a tank and basically put over 1/2 tank of 110 race gas and went to the track. best was 14.03@95. So a far cry from the 13.60's I have been running for last 15 years. Do not know what was wrong really could not do much, just taking too long between runs. Only got 2 in and went home. Car feels good it just needs a redo. Did find out one thing. In high gear going down the track I locked up the convertor and went through the traps at 4700 rpm that is with a 373 gear and 28" tall tire. It would be 4900 with out the lock up.
Very nice information here. Your contribution to the community is greatly appreciated! For the record, I would like to know how many miles are (were) on your engine between rebuilds/cam swaps so we can document exactly how much wear and tear accumulates on an engine (and cam) such as this. Thanks! Gary
I put about 20,000 total in the 20 years. I do about 1k or so per year. I am thinking about doing a leak down test just to see where it is at. The last time I did it was after all of my nitrous runs and I was still at 93% on my lowest cylinder. My comp tester got up 190 lbs. (with Lunati cam). I can't remember now but I thought I had 175-180 with the 510 cam. I think I used the TA 510 cam for about 4 years before I changed it out. Probably had 6000 miles on it. My mph was the highest with this cam. Between this cam and the smaller Lunati cam I still liked the 510 better. I did lose some down on the bottom end and that was the real reason I wanted to change cams. The car is just too heavy and I just did not have as much knowledge as now and plus I have tried a few different things since then. at least that's the thought lol The 3500 convertor that I used before I made the transmission change I could foot brake to 3000 rpm and this netted me my best 60 ft time and my best times. I wish I had used this convertor with the 510 cam as this would have been way better for the cam and heavy car. That convertor I got from the GS club. The only way to get the big heavy car out of the hole without losing bottom end is probably do what you have been preaching on here and that is some type of small cam that is just above that and use the Q-Jet with the small primaries to get moving in a hurry. You will lose up top some but you have to now play with the convertor and the rear gear to find the sweet spot. That would be a good test to see how it turns out. Use your special tweaking with the lifts, durations and opening and closing points of the cam to see what happens. Maybe go with a solid lifter cam to be able to run some higher rpms It is either that what you use for recipe or go the other route and that is gears with the bigger cam the open intake ported heads and gears and more compression. Two routes to go and where do we go from here. What I need is a cam in between the 510 cam and the Lunati cam and I think the 3500 stall is the way to go for me and possibly a 410 gear. I am using a 3000 stall now I will more than likely change to the 410 gear first and see how this goes. That new intake may change all of this crap. heck who knows LOL. Got me rambling again, Later.
Have you considered use a roller cam you might be surprised by the difference between flat tappet an roller .
at his age he has problems opening the geritol bottle never mind the engine. :laugh::laugh::laugh::laugh::laugh:
that's about right on that one. if I get that bottle open I might be able to get that roller cam lol just have to figure out how much lift and duration to give it. how about solid roller lifter cam, take advantage of that new intake. but will it handle a 200 shot.
You can always buy the solid roller and all the other stuff to go with it an freshen up your motor over the winter. Then you can tear up the track in the spring.
Ramble all you want, there's plenty of room on the forum for that. :grin: If you're serious about getting that old engine freshened up with a new cam, I highly recommend going roller. You have all that money invested into it, why go flat tappet that won't last long? You can get excellent miles out of a stock cam, but I KNOW you won't go down THAT path... lol. Roller cams let you go more intense on the lobe profile vs flat tappet too...and if you're interested in making it last a while, making it a little milder will add life to the valvetrain and still give you more power over flat tappet regardless. If you have flow numbers on your heads, give them to me and I'll whip you up a cam card recommendation you can pore over to see if it'll suit you. Give me your static compression ratio too. Tell me everything you'll be using with the car. Gears, stall, powerband desired, size of headers, exhaust pipe diameter, X-pipe or no, mandrel bent or no, muffler type, TA's dual or single plane, carb CFM, etc. I know you already stated a few things, but list it all down for clarification. Give me CFM flow ratings on heads for intake and exhaust, and at which lift. I'll even make it asymmetrical, unless you want it so large that asymmetric lobes won't matter (it does have a diminished return value). The more info you can provide me, the more accurately this cam will fit your application. Gary
