Just want to share my experiences with this project, which began approx 5 years ago with the purchase of an all original 60,000 mile, 1969 Delta 88 Convertible with 350 2bbl.
Two years ago, I purchased a 1969 Toro engine from an "Oldsmobile Guy" who lives only 10 minutes away from me. I planned on rebuilding it myself as a retirement project. I purchased Bill Trovatos book, but soon realized after tearing the engine apart, that I wasn't equipped to rebuild as I don't have the equipment or knowledge to do it right. The person I bought theToro engine from ended up rebuilding it for me and he did a great job.
The engine bores were still within stock spec. so he ball honed the bores, installed new rings, rod bearings, Ford 460 rear seal. In addition he specified that I purchase a Melling High Volume oil pump, Cloyes double roller timing chain. and ,Performance products balancer.
The Toro C heads were rebuilt at a local machine shop.
Other items included;
Edelbrock Performer intake
Edelbrock Performer camshaft and Lifter kit (2152)
Quickfuel 750 Slayer
Thornton Reproduction W/S manifolds.
2 1/4 inch dual exhaust with factory bends and Thrush Hush mufflers
Block performance distributor and 8.5 mm wires
New engine mounts (2161 & 2162) Thanks Joe P.
Felpro gaskets

Engine was installed and broken in for 20 minutes @ 2000 RPM, afterwhich I drove the car home.
The only issue that we ran into was that the Toro oil pan interfered with the tie rods so pan was replaced.
Winter in Wisconsin now so cant drive before spring..bummer.
I'm curious to know what my HP/Torque numbers. are. My guess is 400hp/500tq
Anyone wishing to venture a guess???

 

Cool project, glad you got her started. 👍

 

GM fudged its gross horsepower numbers, depending on car weight, to a limit of 1 horsepower per 10 pounds. Therefore, the identical engine in a heavier car usually got a higher gross HP rating than in a lighter car.

Engines in cars after 1970, and to this day, use a net HP rating. The net HP of your engine, as installed in the Toro, was 275 HP. You now have dual exhaust, so that stock engine in your car would rate 300 HP net.

The net-to-gross adder for the 455 was about 70 HP, so your stock engine would rate 370 gross HP.

The gross torque would be around 530.

Your different cam would change the numbers.

 

This is an estimate about how much HP the Edelbrock cam adds to your Toro engine...

Edelbrock says their 2152 cam has these ratings:
Intake duration: 214° - Exhaust duration: 224° - Intake lift: .472" - Exhaust lift: .496" - Lobe separation: 112° - Intake Center Line: 107° - Vacuum: 15"

This is similar to GM 400165; the E-brock cam will be a bit stronger.

GM 455s with the 400165 rated 320 net HP, a gain of 20 HP versus your stock cam. This would put your engine at 390 gross HP. Nearly in line with your guess.

 

Thank you for the research on E-brock cam kit 2152. I noticed there was a performance chart comparison of Torque numbers with the max being 440. Is that a net TQ Rating? If so, do I add 70 to estimate gross TQ of 510.

 

I have a similar built 425. I would agree with you probably between 385-390. Stock was 365 with high compression.

 

Congrats, but note that the mounts are 2262 and 2263. The 2261 mounts are for A-body cars.

 

I stand corrected on part numbers as I wrote this from memory. I had to drive to two different AUTOZONE stores in Milwaukee to get them. One was on the north side and the other on the south side, plus it was a three hour drive one way so I left at 4:30 am to arrive at the 1st store by 7:30.

 

You're welcome.

Yes and Yes! My torque estimate seemed a bit high to me; the Edelbrock curve seems reasonable.