MG Sports Cars

engine swaps and other performance upgrades, plus "factory" and Costello V8s

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mgb260
Jim Nichols
Sequim,WA
(1727 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: mgb260
Date: October 25, 2015 04:16PM

Perry, Some drag cars stateside like E85. 85% Ethanol/15%Petrol. Less corrosive than Methanol. Cheap, as it is used in Flex fuel cars and available at gas pumps.You would need almost twice as big of jets and steel needles and seats. Also any rubber lines rated for Ethanol.


perrymgbv8
Perry Stephenson

(166 posts)

Registered:
12/06/2007 02:50PM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: perrymgbv8
Date: October 31, 2015 07:30PM

Hi Jim
The SBC with the ally Brodix heads will possibly be lighter than the blown Rover engine. Or at least the same weight I think.

Pel


perrymgbv8
Perry Stephenson

(166 posts)

Registered:
12/06/2007 02:50PM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: perrymgbv8
Date: October 31, 2015 07:32PM

Jim N

Thanks for the info :)

Pel


burner1
Gary W

(212 posts)

Registered:
09/24/2011 09:59AM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: burner1
Date: December 12, 2015 10:49AM

Perry, I look forward to your build. I am getting ready to build an engine for a vintage nascar I have. I am going to intentionally keep it to 350 just to keep in line with how the cars were raced. I plan to start buying parts at the begining of the year. This is the block I will likelly start with:

[chevroletperformanceparts.com]


MGBV8
Carl Floyd
Kingsport, TN
(3042 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: MGBV8
Date: December 12, 2015 11:32AM

358 ci. ;) Here's your engine, Gary. :)

[www.hotrod.com]


burner1
Gary W

(212 posts)

Registered:
09/24/2011 09:59AM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: burner1
Date: December 12, 2015 03:51PM

That is neat, but probably a little more advanced then I want to go on a 1990 Nascar. It won't be a 100% erra but mostly so.


MGBV8
Carl Floyd
Kingsport, TN
(3042 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: MGBV8
Date: December 15, 2015 10:39AM

What paint scheme?



burner1
Gary W

(212 posts)

Registered:
09/24/2011 09:59AM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: burner1
Date: December 15, 2015 12:16PM

This one:

http://api.ning.com/files/oxFTMOUoPq0EfT3iYS7jf*OuXx680FLORcMGniXghyiO1-JVXRT*h8MU110uLY7sUz31DekHCZgioUwRo*GPU4Lr78CSPpE1/457.jpg?transform=rotate%2890%29&width=737&height=418


MGBV8
Carl Floyd
Kingsport, TN
(3042 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: MGBV8
Date: December 16, 2015 11:41AM

Great choice, the Iron Man. He used to destroy Late Model Sportsman right here in Kingsport, TN back in the early 70s. One of the best short track racers ever, if not the best. His home is only about an hour & 15 minutes from here over in Asheville, NC.

Of course, if I were doing what you are, Gary, I would have to back up 3-4 years to honor one of the most wide open, hardest charging drivers.

http://i118.photobucket.com/albums/o96/toomuchcountry/Tim%20Richmond/TimRichmond86a.jpg


burner1
Gary W

(212 posts)

Registered:
09/24/2011 09:59AM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: burner1
Date: December 16, 2015 12:43PM

only problem is this is one of Jack's cars that he raced which is also a Banjo Mathews Chasis.


burner1
Gary W

(212 posts)

Registered:
09/24/2011 09:59AM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: burner1
Date: December 16, 2015 12:46PM

BTW this will be a full ground up build. I took the body panels off, and it is at the sand blasters right now:


http://www.rc-tech.net/cars2/NC/NCStripped.jpg



Edited 1 time(s). Last edit at 12/17/2015 07:58PM by burner1.


MGBV8
Carl Floyd
Kingsport, TN
(3042 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: MGBV8
Date: December 17, 2015 05:13PM

How did you wind up with one of Jack Ingram's cars?


burner1
Gary W

(212 posts)

Registered:
09/24/2011 09:59AM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: burner1
Date: December 17, 2015 07:57PM

Auborn Auction


perrymgbv8
Perry Stephenson

(166 posts)

Registered:
12/06/2007 02:50PM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: perrymgbv8
Date: January 30, 2016 05:40PM

The new SBC engine for the MGB has now taken a turn in the overall plan for the build ??

I have just ordered a new Dart SHP engine block for the build. There were several factors that lead me to this decision. But I think this is the next best course of action for me now. My old 4 bolt block was overbored to +60 thou and I'm not happy that this old block will stand up to the abuse I intend to give it ? Eventually it will be supercharged, but until I can afford a new blower it will have to put up with a lot of Nitrous abuse.

I took some time to look at the list of parts I have collected in the last 18 months and saw that everything was brand new apart from 50 year old engine block. The carbs will be the only things that are not brand new for this build now. And if I can find some money in the next 6 months they may also get replaced with new tuned and matched items? The new Dart block can be bored to give me a nice 430ci motor while still having bore walls 1/4" thick?

The MGB has been off track for 17 months now so I guess another 4-6 months isnt going to kill me eh ?
I just want this to be my last engine build, but also my first ever NEW engine build :)

When the new block arrives I will make a final decision on the crank + rods + pistons so i can finish the buuld. When the new block arrives in 2 weeks i will also need to have it fitted with cam bearings as well as making a decision on the final bore size and deck height.

I'm hoping that by mid to late April I can start bolting stuff together :)

Regrds to all

Perry


mgb260
Jim Nichols
Sequim,WA
(1727 posts)

Registered:
02/29/2008 08:29PM

Main British Car:
1973 MGB roadster 260 Ford V8

Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: mgb260
Date: January 30, 2016 06:13PM

Perry, Thanks for keeping us updated! I'm curious as to how the Speedway mounts will work out in the MGB.



BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5155 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: BlownMGB-V8
Date: January 30, 2016 06:39PM

Wondering what displacement/bore/stroke you are thinking towards? Redline? Lots of potential there.

Jim


burner1
Gary W

(212 posts)

Registered:
09/24/2011 09:59AM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: burner1
Date: February 01, 2016 09:53AM

That stuff takes time. I am trying to source all the parts for mine. Spent a lot of time measuring and researching.


http://www.rc-tech.net/cars2/NC/NCEngine/NCEngine1.jpeg


perrymgbv8
Perry Stephenson

(166 posts)

Registered:
12/06/2007 02:50PM

Main British Car:


Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: perrymgbv8
Date: April 23, 2016 09:05PM

Hi Jim!
I'm going for a tame 383 build on this new engine.
The new block is capable of running much more CI but I dont think i will need it?


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5155 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: BlownMGB-V8
Date: April 24, 2016 09:18AM

Carl thinks using the 400 block with the 350 crank would be a better drag engine, (room for bigger valves and lower piston speed.)

Jim


MGBV8
Carl Floyd
Kingsport, TN
(3042 posts)

Registered:
10/23/2007 11:32PM

Main British Car:
79 MGB, Buick 215

authors avatar
Re: Perry's Drag Race MGB is getting a SBC engine now !
Posted by: MGBV8
Date: May 03, 2016 07:52PM

AND, the shorter stroke. We already have traction issues (maybe not Perry), so I tend to prefer short stroke, free revving engines that move the power farther up the range. I can't use 300 lb-ft of torque at 1000rpm.

Well, now that Perry has purchased an aftermarket block, he can build anything he wants all the way up to a 440 cubic inch small block!


The 377 vs 383 dilemma.
Quote:
377
Pros: Large bore, short stroke engines are always slightly better at making top end power. A typical NASCAR engine is based on the same design although they don't use production engines.
Cons: Finding a 400 block. Main bearing spacers for the crank are not cheap.

383:
Pros: Available from just about everyone. Aftermarket stroker cranks are cheap so you don't need to find an old 400 cast crank. Plenty of kits available to make it in a 1 or 2 piece rear main block. Makes more torque than a 350.
Cons: If you're going to use a crank out of a 400 to make a 383, just build the 400.

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