Another Pontiac V8 Found and Brought Home 1970 Firebird Espirit 350

Back to this little Tin Indian 350 Pontiac.
I made an Airflow file for DD2000 on this engine.
Used Ron's Pontiac website as a reference for published airflow on 1973-74 Pontiac 350 heads #46 with 96 cc combustion chambers, 1.96" intake valves & 1.66" exhaust valves.
Exact same as the 1970 #11 Pontiac 350 cylinder heads.
Ran an engine simulation with the Isky 280 Mega Hydraulic Cam.
Clipped 400 HP @ 409- 6500 RPM's.
390 ft/lbs @ 4500 rpms.

A Pontiac 389 makes more torque typical at 428-440 ft/lbs Max stock engine but the little Pontiac 350 is not far behind & it will run on 87 octane gas with the Isky 280 Mega cam with as is 8.8 :1 compression.
780 cfm is the flow capacity of my 1965 GTO Tripower with mechanical linkage.
Bolts right onto 1965-1979 Pontiac V8 engines all.

Isky 280 Mega cam I like.
On my want list to get this summer for this Pontiac 350 !


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most stock Pontiac heads, have some marginally hidden potential,
that can be accessed through some careful port and bowl area clean-up.
its rather rare in my experience to see O.E.M. heads that won,t benefit from that ,
careful port and bowl area clean-up., and because its generally not going to cost much,
or take a great deal of manual labor its almost semi-free horse power.
getting an extra 20 hp is almost a given
 
Grumpy said:
most stock Pontiac heads, have some marginally hidden potential,
that can be accessed through some careful port and bowl area clean-up.
its rather rare in my experience to see O.E.M. heads that won,t benefit from that ,
careful port and bowl area clean-up., and because its generally not going to cost much,
or take a great deal of manual labor its almost semi-free horse power.
getting an extra 20 hp is almost a given
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Kinda of a toss up because press in studs are used. Other factory heads can be found used online. I used to have a set of 1975 5C heads that came off of an early Pontiac 350 4bbl.
Early 70s all 2bbl the 350. 5C heads decent midrange flow and scavenged ideal for Performance use.
Seen a set of new Edlebrock heads last for $1500. Good deal.
Funds tied up in T/A.
Have to keep the P350 low cost.
5C had factory screw in studs.
Later 6X heads with small chambers 94-96CC guys want and difficult to find. And guys want $600-900 for them.
Getting into aftermarket head prices new.
 
With used heads found Valve guide wear is an issue as you know Grumpy.
If the oil was kept clean the integral cast iron head guides will be Mint no wear.
Pontiac used thick flash plated chrome valvestems on all 1955-81.
If the oil was filthy neglected like most....severe guide wear.
The stock #11 guides is good shape likely.
Little sludge buildup !
 
A Corvette shop contacted me via Text late last night Grumpy.
I applied on Indeed.com earlier this week.
Its 7:35 AM still here Sat. morning.
Take a quick ride in the 63 Gp to the gas station down the road & then call around 8 am.
They want me to come in for an interview.
Chicago area.
Looking to go back working there.

Long story I will tell you another day.
OK working on school buses.
Too much BS politics..... I am the ASE Master Mechanic not the radio dispatcher girl that is 30 years old.

They Work on Hotrods race cars also this Corvette shop !
 
Interview Monday Grumpy in afternoon.
He asked How Old I was.
I am 49 and will be 50 in November.

THAT IS GOOD.
I HIRED A 30 YEAR OLD MILLENNIAL AND JUST KNOWS HOW TO PLUG IN A SCANNER AND THAT'S IT !
 
I got the job at the Corvette shop by the way as you already know from DC.
Start 1st Monday of June.
Try it and see how it works out.

I got the diesel shops calling yet.
I am too old and don't want to work 2nd and 3rd shift.

I don't why Wiz insists fighting with me.
It was so easy he lost big time yesterday.
Lol.
All up to LONGTIMER now and the C8 Corvette coming in July.
Not much can be done till then.
 
post pictures of the corvette shop when you get there and any projects they have you work on with the details
 
Grumpy said:
post pictures of the corvette shop when you get there and any projects they have you work on with the details
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I am not sure it's a good idea Grumpy.
Can not take pictures at random and post.
They said there is 40 million in cars right at the shop.
What I seen its True.
Counted 5 427 425 Hp and 435 Tripower 1965-67 Vettes.
At least 10 C1s.
Muslecars.
Gassers.
A 1970 Trans Am like mine but Lucerene Blue in the shop.
Owner is an old timer like You.
Probably not a good idea to piss off.
 
Unforgiven said:
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I own a Corvette also.
It used to be a Race Car but a Vette is for boomers aged 60-90 years old now.
And every single one ever built is Fragile.
Just see one crashed.
They blow apart to a million pieces.

Be hard to do the same with any car as this 1979 Trans Am the owner installed a 400 Ram Air IV engine.

It's RAIV power.
How they run 100% bone stock.
 
nice video! That would be a blast to drive that car!
Traction control was made for the timid people. Cars like that in the video were made for everyone else with a heartbeat!! :)
 
Unforgiven said:
nice video! That would be a blast to drive that car!
Traction control was made for the timid people. Cars like that in the video were made for everyone else with a heartbeat!! :)
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The 2nd Gen Trans Am and Formula Firebirds outhandled every single Corvette 1953 - 1982 stock for stock.
Come 1984 the C4 Gen Corvette finally outhandled the Trans Am by a good margin.
2nd Gen Trans Am with 4-wheel disc brakes still stopped way faster .
Tuned Port 350 had strong torque stock.
Hp down.
But C4 Can drag some on the street before driveline breaks blows up.
1st Corvette designed arpund the tires.
 
Unforgiven said:
nice video! That would be a blast to drive that car!
Traction control was made for the timid people. Cars like that in the video were made for everyone else with a heartbeat!! :)
Click to expand...
I am on group on FB with a bunch of old time drag racers.
To my Surpise the C1 and C2 Corvettes were voted the best drag cars ever built !
1953-1967.
Guys put up a bunch of photos yesterday of all the early Vettes pulling wheelstands.
Some 5 feet off the ground the front wheels !
I can tell they are 100% Chevy guys.
1967-69 Firebird was Pontiacs best drag car.
Can lighten to 2400-2600 lbs drag weight pretty easy.
 
Well Yeah Grumpy.
As You can see from Digital Corvette why I limited so few pictures of my Trans Am.
No Other way than to Street Race.
Win or loose it has to happen between Wiz & me.
 
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