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Originally Posted by Ironangel
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Thanks for the response Ironangel, the RPO code your saying doesnt represent an L46 engine like I was assuming? It just happens to be a code they are using for the L31? Sorry for the dumb question, this stuffs confusing to me.
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Originally Posted by Ironangel
A carbed Vortec will require an intake manifold designed for a carb, a spreadbore design in your case since your using the greatest carb ever made, a Quadrajet. Do your research, when you get that thing running your going to smile and realize you bought the right motor...
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Im a long way off from getting this thing going but so looking forward to the day. I do have the Edelbrock intake for that spreadbore just waiting to be installed next!
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Originally Posted by Ironangel
A 1/4-20 bolt gets 10 ft lbs, double that for 5/16-18 bolts, 20 ft. lbs. Double that for 3/8-16 bolts, 40 ft. lbs. 7/16-14 bolts get 60 ft. lbs and 1/2-13 gets 90 ft lbs. Those are grade-5 specs. Unless your using a specified nut you don't need grade-8 bolts. A grade-8 bolt used in a shallow threaded cast iron hole such as a motor mount hole can lead to BIG trouble!
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I never knew that doubling rule, thanks. I assumed Grade 8 was the better choice for its strength than grade 5 so that is what I bought. I did buy the 1 inch 3/8-16 and noticed how they were bottoming out with 40lb ft lb torgue leaving the motor mount to have a gap. So I backed out the first one I did and then added a lock washer to make up the difference and did that on the other 5 that I installed. Did I screw up? Wouldnt a grade 5 1inch bolt have the same issue?