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**MikeB** · 05-07-2018, 10:35 PM

Make sure the head bolts are long enough to go AT LEAST 6 threads into the block, and preferably 8. Worst case, you may have to ditch the hardened washers.

I don't know if that's a problem with the Edelbrock heads, but I have experienced it with Dart Iron Eagle and Brodix IK heads, even with ARP bolts which, as I recall, are a shade longer than stock bolts.

Ditto on the idea to use a plenum divider, assuming there's one available for your manifold. I suspect a Performer, Performer EPS, and Performer RPM would have a much more street-friendly power band. But, hey, have fun experimenting! Next up, tunnel ram.

05-07-2018, 10:35 PM	#5395
MikeB Senior Member Join Date: Jul 2000 Location: North Texas Posts: 3,426	Re: Restoring Rusty Make sure the head bolts are long enough to go AT LEAST 6 threads into the block, and preferably 8. Worst case, you may have to ditch the hardened washers. I don't know if that's a problem with the Edelbrock heads, but I have experienced it with Dart Iron Eagle and Brodix IK heads, even with ARP bolts which, as I recall, are a shade longer than stock bolts. Ditto on the idea to use a plenum divider, assuming there's one available for your manifold. I suspect a Performer, Performer EPS, and Performer RPM would have a much more street-friendly power band. But, hey, have fun experimenting! Next up, tunnel ram. __________________ Mike 1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes. 1982 C10 SWB -- sold 1981 C10 Silverado LWB -- sold, but wish I still had it! 1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming. Retired as a factory automation products salesman. Worked part-time over the years for an engine builder and a classic car repair shop. Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!