Gramma's Car: the new project! - Page 27

**Ryan1969Chevelle** · #**261** 10-05-2015, 06:20 PM

This is the first time I have see the value of degreeing a cam during installation.

Bummer that the part is not right on specs, but so important to know now!!

Ryan

**njsteve** · #**262** 10-05-2015, 06:25 PM

Same here. All these decades I always just threw the cam in and assumed it would be right. Rather enlightening to see what I have been missing all these years.

Next episode: What actually goes into the hotdogs you eat. Stay tuned! If you dare! [img]<<GRAEMLIN_URL>>/naughty.gif[/img]

**njsteve** · #**263** 10-05-2015, 07:12 PM

I just installed an old double roller setup from a prior engine and it came back with 1 degree BTDC when installed straight up. So it looks like it is the cam that might be slightly off since I got the exact same result with another timing set.

**njsteve** · #**264** 10-05-2015, 09:16 PM

I spoke with the tech people at Cloyes and the 9-3512X9 timing set I ordered from Summit will hopefully do the trick. The nine-position gear has a "+2" positon that is 1/4 the distance from 0 that the "+4" position is on my old gear.

On the Cloyes gear, that "+4" position that is on my old gear is actually stamped as "+8". He indicated that is how their gears are stamped: with the actual correction factor, so the final result will be two degrees not four.

Fingers crossed...waiting on the UPS guy now.

**njsteve** · #**265** 10-07-2015, 10:48 PM

Well, here's today's lesson in "You Get What You Pay For".

The Cloyes true roller set arrived today. Slipped it on in the "+2" position and voila! Perfect 3 degrees BTDC and 109 degrees intake centerline to match the cam card. I was all giddy - I just kept repeating the calculations and spinning the engine and doing it again and again just to make sure I was not hallucinating. I guess there's a reason they charge $100 for the timing set!

Now we can finally get to buttoning up this monstrosity.

**earntaz** · #**266** 10-07-2015, 11:46 PM

Love it when a plan comes together ...

cook_dw · #**267** 10-08-2015, 12:00 AM

I failed to mention it previously but you hit the nail on the head. Pay the extra money for a timing set. The cheaper ones will stretch within minutes of running. Most of the time it wont matter but when building a precision engine every little thing matters.. Glad the math is working out like it should. [img]<<GRAEMLIN_URL>>/beers.gif[/img]

VintageMusclecar · #**268** 10-08-2015, 12:24 AM

I went through the exact same scenario with my 302.

**njsteve** · #**269** 10-11-2015, 04:55 PM

All buttoned up and ready to go back in!. One of the members at the PY site donated an old set of 1970 chrome valve covers to the project. I cleaned them up and they really woke up the snazzi-ness factor of the engine.

(Ignore the rusty exhaust manifolds. Hopefully any paint on them will burn off in the first minute or two, and I am aiming toward getting some repro D-port Ramair manifolds and a new exhaust system this Winter).

**njsteve** · #**270** 10-11-2015, 11:04 PM

Well, it's time to stop for the night. Got everything installed. Still need to tighten the trans and converter bolts, install starter, radiator, fan, PS pump, etc. Got a lot done this afternoon.