What are the exact cam specs and compression of the engine? If the cam is really large, you are going to need something that is loose at idle but like was said, maybe tighter up top to allow better road manners. But 3000 at 60 sounds about right for your gears, so the slippage doesn't seem TOO bad right now. IF you don't do too much highway driving it will be manageable. We set my friends car with 4.56 gears and a 4400 stall ATI converter and he drove the car all over with 28" tall tires. But he didn't do a whole lot on the highway. Little 355 ran 11.58 with this set up in a street car.
My Inheritance
- Thread starter Turbo Zach
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Wow, cruisin' at 6K.
As mentioned already, spend an extra $100-150 and get a Hughes, PATC, FTI, etc. Don't get an 'off the shelf' deal.
As mentioned already, spend an extra $100-150 and get a Hughes, PATC, FTI, etc. Don't get an 'off the shelf' deal.
I don't have the cam specs. I did not build this engine. All I know is, it a big roller cam. Lopes hard. 9.5:1 compression. North of 600hrp. Dad said you don't shift this car before 10000 rpm and have it wide open when you spray it. It revs fast and hard.
Revving to 6000 rpm when it should be 3000 rpm, doesn't sound to you like it is slipping too much? It does to me. Once the car is in the power zone I am moving 70+ mph. I only drove it 14 miles and was on it pretty hard, so I don't think I did too much damage.
Oh it was at 6? I thought you said 3000 at 60. And that engine isn’t going to 10000. I would guess it’s peaking 65-6800 which is still an accomplishment for the heavy valve train of a big block Chevy. There may be an issue with your tach though.
Yes. It gets to 10000 rpm in a split second. Fastest reving engine I have ever ran. I think it might have roller cam bearing too, but not sure? I know I sound like a dumb kid (I probably am), but I do know my dad had over 15000 in the engine. The original machinist that put together the parts list together is quite the wizard. It is too bad he doesn't do it anymore. The machinist that did the final machine work and assembly was ok. I called him after dad passed, because I was not sure what type of fuel I needed to run. He said it is a 9.5:1 engine and if I ever wanted to sell it he would give me 15000 for it. I tell you guys a little story. I stopped by my dads to see what he was up to. When I got there he was in a bad mood and was beginning to pull the engine back out of the car after he had just put it in there a week before. I said what are you doing? He said pulling this mother ****er back out and it is going back to the machine shop. I said why? He said, you see because I was filling the radiator and when I got to 3 gallons I pulled the dipstick and found the antifreeze in the crank case. I said sh*t. He said no sh*t! It ended up the machinist used copper head gaskets when the heads were machined for o-rings. My dad did not trust him anymore. So once the engine was fixed it went to a dino to be broke-in and tuned. Once he had the engine back and sitting in the car is when he started to get sick. I seen the dino sheet, and my dad said the dino would not go as high as the powerband of the engine. If I remember right it was somewhere around 400 hrp at 5000 rpm. I spent all my free time with him and working on his car for him at that point. I did get it running for him before he died. He thought he was the first to ever start it. I let him believe it. He was no longer in his right mind and passed not much longer after that. Me and my buddies got it drivable. We took the Nova and the Vega to the funeral. There is a lot of emotions in those cars.
Maybe I am full of sh*t, but I am going by what I was told and have experienced. I would take a video, but I do not want to make an account on u-tube to do it.
Well as a 30 year drag racer and former engine builder I can tell you without a doubt a steel head big block Chevy is not going to 10,000 rpm. My last engine before I got out a racing was a 1000 hp 565 that peaked at 7200 and was shifted at 7500. 10000 rpm is not possible with off the shelf parts and you’re not building a 10000 rpm engine for 15,000. So if you’d like realistic advice from knowledgeable people then you have to give up what you were “told” because no one on this or any forum site has experience with what it takes to turn a big block especially a longer stroke engine to 10,000 rpm.
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