Waiting for you to check in buddy!!! Ike
Doorgunner's '68 Convertible Project
Thread Starter
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,607
Likes: 7,053
From: New Or-leens Loo-z-anna
Hey Everyone...it' the usual post-holiday PTSD Song And Dance/Dog and Pony Show on Steriods......Steeroids Streoids.
I'll spare the
.............
Most of the C3 leftover unsold cars, like Prya said, are cars thet were submergd for months under salt water blown in by Hurricane Katrina before they could even be recovered for insurance purposes.
Ya'll keep the thread going until I feel 1/4 to 1/2 way human again!!!!
your fiend(r),
doorgunner
I'll spare the
.............Most of the C3 leftover unsold cars, like Prya said, are cars thet were submergd for months under salt water blown in by Hurricane Katrina before they could even be recovered for insurance purposes.
Ya'll keep the thread going until I feel 1/4 to 1/2 way human again!!!!
your fiend(r),
doorgunner
Last edited by doorgunner; Feb 18, 2022 at 01:57 AM.
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Thread Starter
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,607
Likes: 7,053
From: New Or-leens Loo-z-anna
Yep...Agent Orange didnt pan out as well as .gov hoped it would
Im still seeing "stuff for the 1st time......
50 years later"
Last edited by doorgunner; Feb 23, 2022 at 01:15 AM.
Le Mans Master
Joined: Aug 2010
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From: Bussey, IA
Tony, I know you are struggling. I know and understand at least to some degree you are still seeing new things. But I think you need to see this too. YOU MADE A DIFFERENCE! And there are many people you haven't seen that greatly appreciate you!
Thread Starter
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,607
Likes: 7,053
From: New Or-leens Loo-z-anna
.....even when I am UNDER it 
The Gulf War-Etc. Vets need encouraging too...so sad
Thread Starter
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,607
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From: New Or-leens Loo-z-anna
Question: the previous owner installed a ?set of gm unknown used heads? on the 1970 350 truck engine currently in the car, along with log-style exhaust manifolds. The engine idles/runs perfectly with the Holley 600 and regulated electric fuel pump. The TH350 trans shifts pefectly except for new kickdown solenoid being out of adjustment at the gas pedal.
I realize the heads/exhausts are inefficient, but is there anything I can do to the log manifolds to improve exhaust flow? I have already ground the manifold I.D.s to match the heads and also trimmed the exhaust manifold gaskets to match the ports which increased the idle 300 rpm.
The engine currently ha ?BB heads with 0.060 thick gaskets/160 p.s.i. compression....low h.p. but has a little kick to it above 2,000 r.p.m.
The budget alternative would be shorty/mid length headers to provide better flow to the 8 y.o. Patriot sidepipes that are still in great shape.
Im trying to plan for the engine bay/engine repaint/exhaust improvement when I pull the engine-trans.
I realize the heads/exhausts are inefficient, but is there anything I can do to the log manifolds to improve exhaust flow? I have already ground the manifold I.D.s to match the heads and also trimmed the exhaust manifold gaskets to match the ports which increased the idle 300 rpm.
The engine currently ha ?BB heads with 0.060 thick gaskets/160 p.s.i. compression....low h.p. but has a little kick to it above 2,000 r.p.m.
The budget alternative would be shorty/mid length headers to provide better flow to the 8 y.o. Patriot sidepipes that are still in great shape.
Im trying to plan for the engine bay/engine repaint/exhaust improvement when I pull the engine-trans.
Last edited by doorgunner; Feb 27, 2022 at 05:34 AM.
Race Director
Joined: Jul 2015
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From: SW Florida.
improve exhaust manifolds. how far is lake pontchartrain? and how far can you throw them? i would look for real headers. shorties are pretty exhaust manifolds. what casting number on the heads? but most OE iron heads are pretty much all the same. even the ones that used to be considered special. none compare to iron vortecs. and iron vortecs don't compare to any aftermarket heads. going thinner on head gaskets will help a little. too little to justify the trouble and expense.
Is my vette stock?? HAHA
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From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
If the block is not decked and the heads are OEM then that .060 gasket is killing your compression. You should find a shim gasket that has a compressed thickness of around .015. If you want more power then a head swap and headers will help along with a slightly bigger cam or going to 1.6 or 1.7 rockers with the current cam. If you are just planning on really long cruises I would just swap to the 2 inch rams horns, swap the head gasket and get the bigger rockers. It ill give you great dependability and preserve any fuel mileage that you might have. I just depends on your end goals
Race Director
Joined: Mar 2016
Posts: 14,428
Likes: 8,232
From: Napa Valley California
Hey Tony,
If you are planning to run the side pipes, then I would look into a new set of Sanderson Short tube headers and ditch the log manifolds.
Sanderson has been around since the 60’s, are the best quality headers on the market, and are very reasonably priced.
Check their website and look at the dyno runs they have posted.
They are located in Torrance, Ca.
I have purchased several headers from them in the past and have always been satisfied.
If you are planning to run the side pipes, then I would look into a new set of Sanderson Short tube headers and ditch the log manifolds.
Sanderson has been around since the 60’s, are the best quality headers on the market, and are very reasonably priced.
Check their website and look at the dyno runs they have posted.
They are located in Torrance, Ca.
I have purchased several headers from them in the past and have always been satisfied.
Thread Starter
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,607
Likes: 7,053
From: New Or-leens Loo-z-anna
improve exhaust manifolds. how far is lake pontchartrain? and how far can you throw them? i would look for real headers. shorties are pretty exhaust manifolds. what casting number on the heads? but most OE iron heads are pretty much all the same. even the ones that used to be considered special. none compare to iron vortecs. and iron vortecs don't compare to any aftermarket heads. going thinner on head gaskets will help a little. too little to justify the trouble and expense.
I googled them...depending on the stamping they resale from $50 a pair up to $100 a pair. That would be a down payment on decent headers
If the block is not decked and the heads are OEM then that .060 gasket is killing your compression. You should find a shim gasket that has a compressed thickness of around .015. If you want more power then a head swap and headers will help along with a slightly bigger cam or going to 1.6 or 1.7 rockers with the current cam. If you are just planning on really long cruises I would just swap to the 2 inch rams horns, swap the head gasket and get the bigger rockers. It ill give you great dependability and preserve any fuel mileage that you might have. I just depends on your end goals
Thanks guys for simple beneficial swap information.
Hey Tony,
If you are planning to run the side pipes, then I would look into a new set of Sanderson Short tube headers and ditch the log manifolds.
Sanderson has been around since the 60’s, are the best quality headers on the market, and are very reasonably priced.
Check their website and look at the dyno runs they have posted.
They are located in Torrance, Ca.
I have purchased several headers from them in the past and have always been satisfied.
If you are planning to run the side pipes, then I would look into a new set of Sanderson Short tube headers and ditch the log manifolds.
Sanderson has been around since the 60’s, are the best quality headers on the market, and are very reasonably priced.
Check their website and look at the dyno runs they have posted.
They are located in Torrance, Ca.
I have purchased several headers from them in the past and have always been satisfied.
I will post stampings to see what heads and exhaust manifolds the o.p.'s friend installed...they may even be marine heads from the little knowledge I posess
Race Director
Joined: Jul 2015
Posts: 13,082
Likes: 3,399
From: SW Florida.
the ram's horn may flow no better, but it is a corvette part, not an impala part. they show up 25 bucks each on occasion. shop FB market for used headers too. BUT; your current manifolds. they fit your pipes. they are hooked up. they are not a detail to mess with now. chevy marine heads are 350 heads. nothing different. as long as they aren't 305 heads they are allowed to stay. you sure on that head gasket thickness? even 20 buck 041 thick felpros are an improvement on them. 029 composition can be found. but steel shims like a fresh finish to some number you ain't getting close to with scotchbrite.